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annotate usr/src/uts/common/fs/zfs/dmu.c @ 14172:be36a38bac3d

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4082 zfs receive gets EFBIG from dmu_tx_hold_free() Reviewed by: Eric Schrock <eric.schrock@delphix.com> Reviewed by: Christopher Siden <christopher.siden@delphix.com> Reviewed by: George Wilson <george.wilson@delphix.com> Approved by: Richard Lowe <richlowe@richlowe.net>
author Matthew Ahrens <mahrens@delphix.com>
date Fri, 30 Aug 2013 01:19:35 -0800
parents dceb17481b99
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * CDDL HEADER START
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3 *
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4 * The contents of this file are subject to the terms of the
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5 * Common Development and Distribution License (the "License").
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6 * You may not use this file except in compliance with the License.
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7 *
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8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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9 * or http://www.opensolaris.org/os/licensing.
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10 * See the License for the specific language governing permissions
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11 * and limitations under the License.
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12 *
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13 * When distributing Covered Code, include this CDDL HEADER in each
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14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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15 * If applicable, add the following below this CDDL HEADER, with the
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16 * fields enclosed by brackets "[]" replaced with your own identifying
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17 * information: Portions Copyright [yyyy] [name of copyright owner]
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18 *
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19 * CDDL HEADER END
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20 */
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21 /*
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22 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
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23 * Copyright (c) 2013 by Delphix. All rights reserved.
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24 */
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Saso Kiselkov <skiselkov@gmail.com>
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25 /* Copyright (c) 2013 by Saso Kiselkov. All rights reserved. */
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Bill Pijewski <wdp@joyent.com>
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26 /* Copyright (c) 2013, Joyent, Inc. All rights reserved. */
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27
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28 #include <sys/dmu.h>
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29 #include <sys/dmu_impl.h>
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30 #include <sys/dmu_tx.h>
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31 #include <sys/dbuf.h>
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32 #include <sys/dnode.h>
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33 #include <sys/zfs_context.h>
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34 #include <sys/dmu_objset.h>
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35 #include <sys/dmu_traverse.h>
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36 #include <sys/dsl_dataset.h>
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37 #include <sys/dsl_dir.h>
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38 #include <sys/dsl_pool.h>
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39 #include <sys/dsl_synctask.h>
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40 #include <sys/dsl_prop.h>
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41 #include <sys/dmu_zfetch.h>
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42 #include <sys/zfs_ioctl.h>
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43 #include <sys/zap.h>
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44 #include <sys/zio_checksum.h>
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45 #include <sys/zio_compress.h>
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46 #include <sys/sa.h>
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47 #ifdef _KERNEL
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48 #include <sys/vmsystm.h>
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49 #include <sys/zfs_znode.h>
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50 #endif
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51
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52 /*
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53 * Enable/disable nopwrite feature.
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54 */
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55 int zfs_nopwrite_enabled = 1;
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56
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57 const dmu_object_type_info_t dmu_ot[DMU_OT_NUMTYPES] = {
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58 { DMU_BSWAP_UINT8, TRUE, "unallocated" },
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59 { DMU_BSWAP_ZAP, TRUE, "object directory" },
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60 { DMU_BSWAP_UINT64, TRUE, "object array" },
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61 { DMU_BSWAP_UINT8, TRUE, "packed nvlist" },
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62 { DMU_BSWAP_UINT64, TRUE, "packed nvlist size" },
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63 { DMU_BSWAP_UINT64, TRUE, "bpobj" },
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64 { DMU_BSWAP_UINT64, TRUE, "bpobj header" },
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65 { DMU_BSWAP_UINT64, TRUE, "SPA space map header" },
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66 { DMU_BSWAP_UINT64, TRUE, "SPA space map" },
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67 { DMU_BSWAP_UINT64, TRUE, "ZIL intent log" },
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68 { DMU_BSWAP_DNODE, TRUE, "DMU dnode" },
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69 { DMU_BSWAP_OBJSET, TRUE, "DMU objset" },
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70 { DMU_BSWAP_UINT64, TRUE, "DSL directory" },
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71 { DMU_BSWAP_ZAP, TRUE, "DSL directory child map"},
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72 { DMU_BSWAP_ZAP, TRUE, "DSL dataset snap map" },
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73 { DMU_BSWAP_ZAP, TRUE, "DSL props" },
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74 { DMU_BSWAP_UINT64, TRUE, "DSL dataset" },
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75 { DMU_BSWAP_ZNODE, TRUE, "ZFS znode" },
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76 { DMU_BSWAP_OLDACL, TRUE, "ZFS V0 ACL" },
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77 { DMU_BSWAP_UINT8, FALSE, "ZFS plain file" },
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78 { DMU_BSWAP_ZAP, TRUE, "ZFS directory" },
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79 { DMU_BSWAP_ZAP, TRUE, "ZFS master node" },
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80 { DMU_BSWAP_ZAP, TRUE, "ZFS delete queue" },
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81 { DMU_BSWAP_UINT8, FALSE, "zvol object" },
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82 { DMU_BSWAP_ZAP, TRUE, "zvol prop" },
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83 { DMU_BSWAP_UINT8, FALSE, "other uint8[]" },
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84 { DMU_BSWAP_UINT64, FALSE, "other uint64[]" },
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85 { DMU_BSWAP_ZAP, TRUE, "other ZAP" },
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86 { DMU_BSWAP_ZAP, TRUE, "persistent error log" },
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87 { DMU_BSWAP_UINT8, TRUE, "SPA history" },
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88 { DMU_BSWAP_UINT64, TRUE, "SPA history offsets" },
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89 { DMU_BSWAP_ZAP, TRUE, "Pool properties" },
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90 { DMU_BSWAP_ZAP, TRUE, "DSL permissions" },
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91 { DMU_BSWAP_ACL, TRUE, "ZFS ACL" },
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92 { DMU_BSWAP_UINT8, TRUE, "ZFS SYSACL" },
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93 { DMU_BSWAP_UINT8, TRUE, "FUID table" },
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94 { DMU_BSWAP_UINT64, TRUE, "FUID table size" },
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95 { DMU_BSWAP_ZAP, TRUE, "DSL dataset next clones"},
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96 { DMU_BSWAP_ZAP, TRUE, "scan work queue" },
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97 { DMU_BSWAP_ZAP, TRUE, "ZFS user/group used" },
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98 { DMU_BSWAP_ZAP, TRUE, "ZFS user/group quota" },
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99 { DMU_BSWAP_ZAP, TRUE, "snapshot refcount tags"},
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100 { DMU_BSWAP_ZAP, TRUE, "DDT ZAP algorithm" },
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101 { DMU_BSWAP_ZAP, TRUE, "DDT statistics" },
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102 { DMU_BSWAP_UINT8, TRUE, "System attributes" },
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103 { DMU_BSWAP_ZAP, TRUE, "SA master node" },
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104 { DMU_BSWAP_ZAP, TRUE, "SA attr registration" },
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105 { DMU_BSWAP_ZAP, TRUE, "SA attr layouts" },
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106 { DMU_BSWAP_ZAP, TRUE, "scan translations" },
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107 { DMU_BSWAP_UINT8, FALSE, "deduplicated block" },
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108 { DMU_BSWAP_ZAP, TRUE, "DSL deadlist map" },
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109 { DMU_BSWAP_UINT64, TRUE, "DSL deadlist map hdr" },
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110 { DMU_BSWAP_ZAP, TRUE, "DSL dir clones" },
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111 { DMU_BSWAP_UINT64, TRUE, "bpobj subobj" }
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112 };
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113
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114 const dmu_object_byteswap_info_t dmu_ot_byteswap[DMU_BSWAP_NUMFUNCS] = {
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115 { byteswap_uint8_array, "uint8" },
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116 { byteswap_uint16_array, "uint16" },
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117 { byteswap_uint32_array, "uint32" },
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118 { byteswap_uint64_array, "uint64" },
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119 { zap_byteswap, "zap" },
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120 { dnode_buf_byteswap, "dnode" },
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121 { dmu_objset_byteswap, "objset" },
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122 { zfs_znode_byteswap, "znode" },
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123 { zfs_oldacl_byteswap, "oldacl" },
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124 { zfs_acl_byteswap, "acl" }
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125 };
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126
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127 int
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128 dmu_buf_hold(objset_t *os, uint64_t object, uint64_t offset,
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129 void *tag, dmu_buf_t **dbp, int flags)
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130 {
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131 dnode_t *dn;
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132 uint64_t blkid;
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133 dmu_buf_impl_t *db;
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134 int err;
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diff changeset
135 int db_flags = DB_RF_CANFAIL;
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diff changeset
136
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diff changeset
137 if (flags & DMU_READ_NO_PREFETCH)
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diff changeset
138 db_flags |= DB_RF_NOPREFETCH;
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diff changeset
139
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diff changeset
140 err = dnode_hold(os, object, FTAG, &dn);
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diff changeset
141 if (err)
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142 return (err);
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143 blkid = dbuf_whichblock(dn, offset);
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144 rw_enter(&dn->dn_struct_rwlock, RW_READER);
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diff changeset
145 db = dbuf_hold(dn, blkid, tag);
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diff changeset
146 rw_exit(&dn->dn_struct_rwlock);
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diff changeset
147 if (db == NULL) {
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diff changeset
148 err = SET_ERROR(EIO);
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diff changeset
149 } else {
12285
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diff changeset
150 err = dbuf_read(db, NULL, db_flags);
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151 if (err) {
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diff changeset
152 dbuf_rele(db, tag);
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153 db = NULL;
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154 }
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155 }
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156
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diff changeset
157 dnode_rele(dn, FTAG);
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158 *dbp = &db->db; /* NULL db plus first field offset is NULL */
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159 return (err);
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160 }
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161
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162 int
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163 dmu_bonus_max(void)
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164 {
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165 return (DN_MAX_BONUSLEN);
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166 }
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167
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diff changeset
168 int
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diff changeset
169 dmu_set_bonus(dmu_buf_t *db_fake, int newsize, dmu_tx_t *tx)
4944
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170 {
12684
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diff changeset
171 dmu_buf_impl_t *db = (dmu_buf_impl_t *)db_fake;
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parents: 12493
diff changeset
172 dnode_t *dn;
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diff changeset
173 int error;
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diff changeset
174
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diff changeset
175 DB_DNODE_ENTER(db);
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diff changeset
176 dn = DB_DNODE(db);
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177
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diff changeset
178 if (dn->dn_bonus != db) {
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parents: 13977
diff changeset
179 error = SET_ERROR(EINVAL);
12684
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parents: 12493
diff changeset
180 } else if (newsize < 0 || newsize > db_fake->db_size) {
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parents: 13977
diff changeset
181 error = SET_ERROR(EINVAL);
12684
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diff changeset
182 } else {
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parents: 12493
diff changeset
183 dnode_setbonuslen(dn, newsize, tx);
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diff changeset
184 error = 0;
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parents: 12493
diff changeset
185 }
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
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diff changeset
186
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parents: 12493
diff changeset
187 DB_DNODE_EXIT(db);
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diff changeset
188 return (error);
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diff changeset
189 }
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diff changeset
190
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diff changeset
191 int
12684
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parents: 12493
diff changeset
192 dmu_set_bonustype(dmu_buf_t *db_fake, dmu_object_type_t type, dmu_tx_t *tx)
11935
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diff changeset
193 {
12684
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diff changeset
194 dmu_buf_impl_t *db = (dmu_buf_impl_t *)db_fake;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
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parents: 12493
diff changeset
195 dnode_t *dn;
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parents: 12493
diff changeset
196 int error;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
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parents: 12493
diff changeset
197
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
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parents: 12493
diff changeset
198 DB_DNODE_ENTER(db);
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parents: 12493
diff changeset
199 dn = DB_DNODE(db);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
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parents: 12493
diff changeset
200
13700
2889e2596bd6 2619 asynchronous destruction of ZFS file systems
Christopher Siden <chris.siden@delphix.com>
parents: 12684
diff changeset
201 if (!DMU_OT_IS_VALID(type)) {
13980
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parents: 13977
diff changeset
202 error = SET_ERROR(EINVAL);
12684
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
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parents: 12493
diff changeset
203 } else if (dn->dn_bonus != db) {
13980
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parents: 13977
diff changeset
204 error = SET_ERROR(EINVAL);
12684
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
205 } else {
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
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parents: 12493
diff changeset
206 dnode_setbonus_type(dn, type, tx);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
207 error = 0;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
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parents: 12493
diff changeset
208 }
11935
538c866aaac6 6716117 ZFS needs native system attribute infrastructure
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diff changeset
209
12684
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
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parents: 12493
diff changeset
210 DB_DNODE_EXIT(db);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
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diff changeset
211 return (error);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
212 }
11935
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diff changeset
213
12684
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
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parents: 12493
diff changeset
214 dmu_object_type_t
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
215 dmu_get_bonustype(dmu_buf_t *db_fake)
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
216 {
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
217 dmu_buf_impl_t *db = (dmu_buf_impl_t *)db_fake;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
218 dnode_t *dn;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
219 dmu_object_type_t type;
11935
538c866aaac6 6716117 ZFS needs native system attribute infrastructure
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parents: 11670
diff changeset
220
12684
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
221 DB_DNODE_ENTER(db);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
222 dn = DB_DNODE(db);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
223 type = dn->dn_bonustype;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
224 DB_DNODE_EXIT(db);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
225
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
226 return (type);
11935
538c866aaac6 6716117 ZFS needs native system attribute infrastructure
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diff changeset
227 }
538c866aaac6 6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents: 11670
diff changeset
228
538c866aaac6 6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents: 11670
diff changeset
229 int
538c866aaac6 6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents: 11670
diff changeset
230 dmu_rm_spill(objset_t *os, uint64_t object, dmu_tx_t *tx)
538c866aaac6 6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents: 11670
diff changeset
231 {
538c866aaac6 6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents: 11670
diff changeset
232 dnode_t *dn;
538c866aaac6 6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents: 11670
diff changeset
233 int error;
538c866aaac6 6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents: 11670
diff changeset
234
538c866aaac6 6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents: 11670
diff changeset
235 error = dnode_hold(os, object, FTAG, &dn);
538c866aaac6 6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents: 11670
diff changeset
236 dbuf_rm_spill(dn, tx);
12178
93ec1371f750 6939983 assertion failed: zap_count(os, DMU_USERUSED_OBJECT, &count) != 0||count == 0, in dsl_dataset.c
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents: 12123
diff changeset
237 rw_enter(&dn->dn_struct_rwlock, RW_WRITER);
93ec1371f750 6939983 assertion failed: zap_count(os, DMU_USERUSED_OBJECT, &count) != 0||count == 0, in dsl_dataset.c
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents: 12123
diff changeset
238 dnode_rm_spill(dn, tx);
93ec1371f750 6939983 assertion failed: zap_count(os, DMU_USERUSED_OBJECT, &count) != 0||count == 0, in dsl_dataset.c
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents: 12123
diff changeset
239 rw_exit(&dn->dn_struct_rwlock);
11935
538c866aaac6 6716117 ZFS needs native system attribute infrastructure
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parents: 11670
diff changeset
240 dnode_rele(dn, FTAG);
538c866aaac6 6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents: 11670
diff changeset
241 return (error);
538c866aaac6 6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents: 11670
diff changeset
242 }
538c866aaac6 6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents: 11670
diff changeset
243
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
244 /*
1544
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diff changeset
245 * returns ENOENT, EIO, or 0.
789
b348f31ed315 PSARC 2002/240 ZFS
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parents:
diff changeset
246 */
1544
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parents: 789
diff changeset
247 int
938876158511 PSARC 2006/077 zpool clear
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parents: 789
diff changeset
248 dmu_bonus_hold(objset_t *os, uint64_t object, void *tag, dmu_buf_t **dbp)
789
b348f31ed315 PSARC 2002/240 ZFS
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parents:
diff changeset
249 {
1544
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parents: 789
diff changeset
250 dnode_t *dn;
789
b348f31ed315 PSARC 2002/240 ZFS
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parents:
diff changeset
251 dmu_buf_impl_t *db;
4944
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
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parents: 4543
diff changeset
252 int error;
789
b348f31ed315 PSARC 2002/240 ZFS
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parents:
diff changeset
253
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10242
diff changeset
254 error = dnode_hold(os, object, FTAG, &dn);
4944
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents: 4543
diff changeset
255 if (error)
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
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parents: 4543
diff changeset
256 return (error);
789
b348f31ed315 PSARC 2002/240 ZFS
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parents:
diff changeset
257
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parents: 789
diff changeset
258 rw_enter(&dn->dn_struct_rwlock, RW_READER);
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parents: 789
diff changeset
259 if (dn->dn_bonus == NULL) {
789
b348f31ed315 PSARC 2002/240 ZFS
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parents:
diff changeset
260 rw_exit(&dn->dn_struct_rwlock);
1544
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parents: 789
diff changeset
261 rw_enter(&dn->dn_struct_rwlock, RW_WRITER);
938876158511 PSARC 2006/077 zpool clear
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parents: 789
diff changeset
262 if (dn->dn_bonus == NULL)
4944
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents: 4543
diff changeset
263 dbuf_create_bonus(dn);
789
b348f31ed315 PSARC 2002/240 ZFS
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parents:
diff changeset
264 }
1544
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parents: 789
diff changeset
265 db = dn->dn_bonus;
4944
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents: 4543
diff changeset
266
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents: 4543
diff changeset
267 /* as long as the bonus buf is held, the dnode will be held */
12684
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
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parents: 12493
diff changeset
268 if (refcount_add(&db->db_holds, tag) == 1) {
4944
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents: 4543
diff changeset
269 VERIFY(dnode_add_ref(dn, db));
12684
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
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parents: 12493
diff changeset
270 (void) atomic_inc_32_nv(&dn->dn_dbufs_count);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
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parents: 12493
diff changeset
271 }
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
272
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
273 /*
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parents: 12493
diff changeset
274 * Wait to drop dn_struct_rwlock until after adding the bonus dbuf's
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parents: 12493
diff changeset
275 * hold and incrementing the dbuf count to ensure that dnode_move() sees
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parents: 12493
diff changeset
276 * a dnode hold for every dbuf.
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parents: 12493
diff changeset
277 */
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parents: 12493
diff changeset
278 rw_exit(&dn->dn_struct_rwlock);
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279
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280 dnode_rele(dn, FTAG);
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diff changeset
281
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diff changeset
282 VERIFY(0 == dbuf_read(db, NULL, DB_RF_MUST_SUCCEED | DB_RF_NOPREFETCH));
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283
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284 *dbp = &db->db;
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285 return (0);
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286 }
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287
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288 /*
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289 * returns ENOENT, EIO, or 0.
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290 *
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291 * This interface will allocate a blank spill dbuf when a spill blk
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diff changeset
292 * doesn't already exist on the dnode.
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diff changeset
293 *
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294 * if you only want to find an already existing spill db, then
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diff changeset
295 * dmu_spill_hold_existing() should be used.
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296 */
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diff changeset
297 int
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diff changeset
298 dmu_spill_hold_by_dnode(dnode_t *dn, uint32_t flags, void *tag, dmu_buf_t **dbp)
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diff changeset
299 {
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300 dmu_buf_impl_t *db = NULL;
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diff changeset
301 int err;
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302
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diff changeset
303 if ((flags & DB_RF_HAVESTRUCT) == 0)
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diff changeset
304 rw_enter(&dn->dn_struct_rwlock, RW_READER);
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305
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diff changeset
306 db = dbuf_hold(dn, DMU_SPILL_BLKID, tag);
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diff changeset
307
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diff changeset
308 if ((flags & DB_RF_HAVESTRUCT) == 0)
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diff changeset
309 rw_exit(&dn->dn_struct_rwlock);
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diff changeset
310
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diff changeset
311 ASSERT(db != NULL);
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89ce40422cea 6952177 SA handling of on-disk corruption can be improved
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diff changeset
312 err = dbuf_read(db, NULL, flags);
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diff changeset
313 if (err == 0)
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diff changeset
314 *dbp = &db->db;
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parents: 12470
diff changeset
315 else
89ce40422cea 6952177 SA handling of on-disk corruption can be improved
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diff changeset
316 dbuf_rele(db, tag);
11935
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diff changeset
317 return (err);
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diff changeset
318 }
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319
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diff changeset
320 int
538c866aaac6 6716117 ZFS needs native system attribute infrastructure
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diff changeset
321 dmu_spill_hold_existing(dmu_buf_t *bonus, void *tag, dmu_buf_t **dbp)
538c866aaac6 6716117 ZFS needs native system attribute infrastructure
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parents: 11670
diff changeset
322 {
12684
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
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parents: 12493
diff changeset
323 dmu_buf_impl_t *db = (dmu_buf_impl_t *)bonus;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
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diff changeset
324 dnode_t *dn;
11935
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diff changeset
325 int err;
538c866aaac6 6716117 ZFS needs native system attribute infrastructure
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parents: 11670
diff changeset
326
12684
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
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diff changeset
327 DB_DNODE_ENTER(db);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
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parents: 12493
diff changeset
328 dn = DB_DNODE(db);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
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parents: 12493
diff changeset
329
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
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parents: 12493
diff changeset
330 if (spa_version(dn->dn_objset->os_spa) < SPA_VERSION_SA) {
13980
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parents: 13977
diff changeset
331 err = SET_ERROR(EINVAL);
12684
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parents: 12493
diff changeset
332 } else {
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
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parents: 12493
diff changeset
333 rw_enter(&dn->dn_struct_rwlock, RW_READER);
11935
538c866aaac6 6716117 ZFS needs native system attribute infrastructure
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diff changeset
334
12684
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diff changeset
335 if (!dn->dn_have_spill) {
13980
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diff changeset
336 err = SET_ERROR(ENOENT);
12684
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diff changeset
337 } else {
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
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diff changeset
338 err = dmu_spill_hold_by_dnode(dn,
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
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parents: 12493
diff changeset
339 DB_RF_HAVESTRUCT | DB_RF_CANFAIL, tag, dbp);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
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diff changeset
340 }
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
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diff changeset
341
11935
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diff changeset
342 rw_exit(&dn->dn_struct_rwlock);
538c866aaac6 6716117 ZFS needs native system attribute infrastructure
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diff changeset
343 }
12684
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
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parents: 12493
diff changeset
344
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
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diff changeset
345 DB_DNODE_EXIT(db);
11935
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diff changeset
346 return (err);
538c866aaac6 6716117 ZFS needs native system attribute infrastructure
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diff changeset
347 }
538c866aaac6 6716117 ZFS needs native system attribute infrastructure
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parents: 11670
diff changeset
348
538c866aaac6 6716117 ZFS needs native system attribute infrastructure
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diff changeset
349 int
538c866aaac6 6716117 ZFS needs native system attribute infrastructure
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diff changeset
350 dmu_spill_hold_by_bonus(dmu_buf_t *bonus, void *tag, dmu_buf_t **dbp)
538c866aaac6 6716117 ZFS needs native system attribute infrastructure
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parents: 11670
diff changeset
351 {
12684
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
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parents: 12493
diff changeset
352 dmu_buf_impl_t *db = (dmu_buf_impl_t *)bonus;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
353 dnode_t *dn;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
354 int err;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
355
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
356 DB_DNODE_ENTER(db);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
357 dn = DB_DNODE(db);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
358 err = dmu_spill_hold_by_dnode(dn, DB_RF_CANFAIL, tag, dbp);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
359 DB_DNODE_EXIT(db);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
360
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
361 return (err);
11935
538c866aaac6 6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
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diff changeset
362 }
538c866aaac6 6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents: 11670
diff changeset
363
538c866aaac6 6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents: 11670
diff changeset
364 /*
2391
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maybee
parents: 2237
diff changeset
365 * Note: longer-term, we should modify all of the dmu_buf_*() interfaces
2fa3fd1db808 6447377 ZFS prefetch is inconsistant
maybee
parents: 2237
diff changeset
366 * to take a held dnode rather than <os, object> -- the lookup is wasteful,
2fa3fd1db808 6447377 ZFS prefetch is inconsistant
maybee
parents: 2237
diff changeset
367 * and can induce severe lock contention when writing to several files
2fa3fd1db808 6447377 ZFS prefetch is inconsistant
maybee
parents: 2237
diff changeset
368 * whose dnodes are in the same block.
2fa3fd1db808 6447377 ZFS prefetch is inconsistant
maybee
parents: 2237
diff changeset
369 */
2fa3fd1db808 6447377 ZFS prefetch is inconsistant
maybee
parents: 2237
diff changeset
370 static int
9512
64cafcbcc337 6801810 Commit of aligned streaming rewrites to ZIL device causes unwanted disk reads
Neil Perrin <Neil.Perrin@Sun.COM>
parents: 9412
diff changeset
371 dmu_buf_hold_array_by_dnode(dnode_t *dn, uint64_t offset, uint64_t length,
64cafcbcc337 6801810 Commit of aligned streaming rewrites to ZIL device causes unwanted disk reads
Neil Perrin <Neil.Perrin@Sun.COM>
parents: 9412
diff changeset
372 int read, void *tag, int *numbufsp, dmu_buf_t ***dbpp, uint32_t flags)
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
373 {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
374 dmu_buf_t **dbp;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
375 uint64_t blkid, nblks, i;
9512
64cafcbcc337 6801810 Commit of aligned streaming rewrites to ZIL device causes unwanted disk reads
Neil Perrin <Neil.Perrin@Sun.COM>
parents: 9412
diff changeset
376 uint32_t dbuf_flags;
1544
938876158511 PSARC 2006/077 zpool clear
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parents: 789
diff changeset
377 int err;
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
378 zio_t *zio;
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
379
938876158511 PSARC 2006/077 zpool clear
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parents: 789
diff changeset
380 ASSERT(length <= DMU_MAX_ACCESS);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
381
10209
91f47f0e7728 6830541 zfs_get_data trips on a verify
Mark J Musante <Mark.Musante@Sun.COM>
parents: 9951
diff changeset
382 dbuf_flags = DB_RF_CANFAIL | DB_RF_NEVERWAIT | DB_RF_HAVESTRUCT;
9512
64cafcbcc337 6801810 Commit of aligned streaming rewrites to ZIL device causes unwanted disk reads
Neil Perrin <Neil.Perrin@Sun.COM>
parents: 9412
diff changeset
383 if (flags & DMU_READ_NO_PREFETCH || length > zfetch_array_rd_sz)
64cafcbcc337 6801810 Commit of aligned streaming rewrites to ZIL device causes unwanted disk reads
Neil Perrin <Neil.Perrin@Sun.COM>
parents: 9412
diff changeset
384 dbuf_flags |= DB_RF_NOPREFETCH;
1544
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eschrock
parents: 789
diff changeset
385
789
b348f31ed315 PSARC 2002/240 ZFS
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parents:
diff changeset
386 rw_enter(&dn->dn_struct_rwlock, RW_READER);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
387 if (dn->dn_datablkshift) {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
388 int blkshift = dn->dn_datablkshift;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
389 nblks = (P2ROUNDUP(offset+length, 1ULL<<blkshift) -
3912
f6891a60bd72 PSARC 2007/083 ZFS bootable datasets
lling
parents: 3835
diff changeset
390 P2ALIGN(offset, 1ULL<<blkshift)) >> blkshift;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
391 } else {
3713
00e75dc8b749 6527325 want more assertions in space map code
ahrens
parents: 3689
diff changeset
392 if (offset + length > dn->dn_datablksz) {
00e75dc8b749 6527325 want more assertions in space map code
ahrens
parents: 3689
diff changeset
393 zfs_panic_recover("zfs: accessing past end of object "
00e75dc8b749 6527325 want more assertions in space map code
ahrens
parents: 3689
diff changeset
394 "%llx/%llx (size=%u access=%llu+%llu)",
00e75dc8b749 6527325 want more assertions in space map code
ahrens
parents: 3689
diff changeset
395 (longlong_t)dn->dn_objset->
00e75dc8b749 6527325 want more assertions in space map code
ahrens
parents: 3689
diff changeset
396 os_dsl_dataset->ds_object,
00e75dc8b749 6527325 want more assertions in space map code
ahrens
parents: 3689
diff changeset
397 (longlong_t)dn->dn_object, dn->dn_datablksz,
00e75dc8b749 6527325 want more assertions in space map code
ahrens
parents: 3689
diff changeset
398 (longlong_t)offset, (longlong_t)length);
10209
91f47f0e7728 6830541 zfs_get_data trips on a verify
Mark J Musante <Mark.Musante@Sun.COM>
parents: 9951
diff changeset
399 rw_exit(&dn->dn_struct_rwlock);
13980
d7059eb1884c 3598 want to dtrace when errors are generated in zfs
Matthew Ahrens <mahrens@delphix.com>
parents: 13977
diff changeset
400 return (SET_ERROR(EIO));
3713
00e75dc8b749 6527325 want more assertions in space map code
ahrens
parents: 3689
diff changeset
401 }
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
402 nblks = 1;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
403 }
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
404 dbp = kmem_zalloc(sizeof (dmu_buf_t *) * nblks, KM_SLEEP);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
405
7754
b80e4842ad54 6754011 SPA 3.0: lock breakup, i/o pipeline refactoring, device failure handling
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 7468
diff changeset
406 zio = zio_root(dn->dn_objset->os_spa, NULL, NULL, ZIO_FLAG_CANFAIL);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
407 blkid = dbuf_whichblock(dn, offset);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
408 for (i = 0; i < nblks; i++) {
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
409 dmu_buf_impl_t *db = dbuf_hold(dn, blkid+i, tag);
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
410 if (db == NULL) {
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
411 rw_exit(&dn->dn_struct_rwlock);
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
412 dmu_buf_rele_array(dbp, nblks, tag);
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
413 zio_nowait(zio);
13980
d7059eb1884c 3598 want to dtrace when errors are generated in zfs
Matthew Ahrens <mahrens@delphix.com>
parents: 13977
diff changeset
414 return (SET_ERROR(EIO));
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
415 }
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
416 /* initiate async i/o */
2391
2fa3fd1db808 6447377 ZFS prefetch is inconsistant
maybee
parents: 2237
diff changeset
417 if (read) {
9512
64cafcbcc337 6801810 Commit of aligned streaming rewrites to ZIL device causes unwanted disk reads
Neil Perrin <Neil.Perrin@Sun.COM>
parents: 9412
diff changeset
418 (void) dbuf_read(db, zio, dbuf_flags);
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
419 }
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
420 dbp[i] = &db->db;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
421 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
422 rw_exit(&dn->dn_struct_rwlock);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
423
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
424 /* wait for async i/o */
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
425 err = zio_wait(zio);
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
426 if (err) {
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
427 dmu_buf_rele_array(dbp, nblks, tag);
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
428 return (err);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
429 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
430
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
431 /* wait for other io to complete */
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
432 if (read) {
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
433 for (i = 0; i < nblks; i++) {
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
434 dmu_buf_impl_t *db = (dmu_buf_impl_t *)dbp[i];
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
435 mutex_enter(&db->db_mtx);
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
436 while (db->db_state == DB_READ ||
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
437 db->db_state == DB_FILL)
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
438 cv_wait(&db->db_changed, &db->db_mtx);
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
439 if (db->db_state == DB_UNCACHED)
13980
d7059eb1884c 3598 want to dtrace when errors are generated in zfs
Matthew Ahrens <mahrens@delphix.com>
parents: 13977
diff changeset
440 err = SET_ERROR(EIO);
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
441 mutex_exit(&db->db_mtx);
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
442 if (err) {
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
443 dmu_buf_rele_array(dbp, nblks, tag);
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
444 return (err);
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
445 }
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
446 }
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
447 }
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
448
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
449 *numbufsp = nblks;
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
450 *dbpp = dbp;
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
451 return (0);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
452 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
453
2885
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2743
diff changeset
454 static int
2391
2fa3fd1db808 6447377 ZFS prefetch is inconsistant
maybee
parents: 2237
diff changeset
455 dmu_buf_hold_array(objset_t *os, uint64_t object, uint64_t offset,
2fa3fd1db808 6447377 ZFS prefetch is inconsistant
maybee
parents: 2237
diff changeset
456 uint64_t length, int read, void *tag, int *numbufsp, dmu_buf_t ***dbpp)
2fa3fd1db808 6447377 ZFS prefetch is inconsistant
maybee
parents: 2237
diff changeset
457 {
2fa3fd1db808 6447377 ZFS prefetch is inconsistant
maybee
parents: 2237
diff changeset
458 dnode_t *dn;
2fa3fd1db808 6447377 ZFS prefetch is inconsistant
maybee
parents: 2237
diff changeset
459 int err;
2fa3fd1db808 6447377 ZFS prefetch is inconsistant
maybee
parents: 2237
diff changeset
460
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10242
diff changeset
461 err = dnode_hold(os, object, FTAG, &dn);
2391
2fa3fd1db808 6447377 ZFS prefetch is inconsistant
maybee
parents: 2237
diff changeset
462 if (err)
2fa3fd1db808 6447377 ZFS prefetch is inconsistant
maybee
parents: 2237
diff changeset
463 return (err);
2fa3fd1db808 6447377 ZFS prefetch is inconsistant
maybee
parents: 2237
diff changeset
464
2fa3fd1db808 6447377 ZFS prefetch is inconsistant
maybee
parents: 2237
diff changeset
465 err = dmu_buf_hold_array_by_dnode(dn, offset, length, read, tag,
9512
64cafcbcc337 6801810 Commit of aligned streaming rewrites to ZIL device causes unwanted disk reads
Neil Perrin <Neil.Perrin@Sun.COM>
parents: 9412
diff changeset
466 numbufsp, dbpp, DMU_READ_PREFETCH);
2391
2fa3fd1db808 6447377 ZFS prefetch is inconsistant
maybee
parents: 2237
diff changeset
467
2fa3fd1db808 6447377 ZFS prefetch is inconsistant
maybee
parents: 2237
diff changeset
468 dnode_rele(dn, FTAG);
2fa3fd1db808 6447377 ZFS prefetch is inconsistant
maybee
parents: 2237
diff changeset
469
2fa3fd1db808 6447377 ZFS prefetch is inconsistant
maybee
parents: 2237
diff changeset
470 return (err);
2fa3fd1db808 6447377 ZFS prefetch is inconsistant
maybee
parents: 2237
diff changeset
471 }
2fa3fd1db808 6447377 ZFS prefetch is inconsistant
maybee
parents: 2237
diff changeset
472
2fa3fd1db808 6447377 ZFS prefetch is inconsistant
maybee
parents: 2237
diff changeset
473 int
12684
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
474 dmu_buf_hold_array_by_bonus(dmu_buf_t *db_fake, uint64_t offset,
2391
2fa3fd1db808 6447377 ZFS prefetch is inconsistant
maybee
parents: 2237
diff changeset
475 uint64_t length, int read, void *tag, int *numbufsp, dmu_buf_t ***dbpp)
2fa3fd1db808 6447377 ZFS prefetch is inconsistant
maybee
parents: 2237
diff changeset
476 {
12684
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
477 dmu_buf_impl_t *db = (dmu_buf_impl_t *)db_fake;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
478 dnode_t *dn;
2391
2fa3fd1db808 6447377 ZFS prefetch is inconsistant
maybee
parents: 2237
diff changeset
479 int err;
2fa3fd1db808 6447377 ZFS prefetch is inconsistant
maybee
parents: 2237
diff changeset
480
12684
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
481 DB_DNODE_ENTER(db);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
482 dn = DB_DNODE(db);
2391
2fa3fd1db808 6447377 ZFS prefetch is inconsistant
maybee
parents: 2237
diff changeset
483 err = dmu_buf_hold_array_by_dnode(dn, offset, length, read, tag,
9512
64cafcbcc337 6801810 Commit of aligned streaming rewrites to ZIL device causes unwanted disk reads
Neil Perrin <Neil.Perrin@Sun.COM>
parents: 9412
diff changeset
484 numbufsp, dbpp, DMU_READ_PREFETCH);
12684
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
485 DB_DNODE_EXIT(db);
2391
2fa3fd1db808 6447377 ZFS prefetch is inconsistant
maybee
parents: 2237
diff changeset
486
2fa3fd1db808 6447377 ZFS prefetch is inconsistant
maybee
parents: 2237
diff changeset
487 return (err);
2fa3fd1db808 6447377 ZFS prefetch is inconsistant
maybee
parents: 2237
diff changeset
488 }
2fa3fd1db808 6447377 ZFS prefetch is inconsistant
maybee
parents: 2237
diff changeset
489
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
490 void
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
491 dmu_buf_rele_array(dmu_buf_t **dbp_fake, int numbufs, void *tag)
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
492 {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
493 int i;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
494 dmu_buf_impl_t **dbp = (dmu_buf_impl_t **)dbp_fake;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
495
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
496 if (numbufs == 0)
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
497 return;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
498
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
499 for (i = 0; i < numbufs; i++) {
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
500 if (dbp[i])
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
501 dbuf_rele(dbp[i], tag);
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
502 }
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
503
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
504 kmem_free(dbp, sizeof (dmu_buf_t *) * numbufs);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
505 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
506
14164
dceb17481b99 4045 zfs write throttle & i/o scheduler performance work
Matthew Ahrens <mahrens@delphix.com>
parents: 14159
diff changeset
507 /*
dceb17481b99 4045 zfs write throttle & i/o scheduler performance work
Matthew Ahrens <mahrens@delphix.com>
parents: 14159
diff changeset
508 * Issue prefetch i/os for the given blocks.
dceb17481b99 4045 zfs write throttle & i/o scheduler performance work
Matthew Ahrens <mahrens@delphix.com>
parents: 14159
diff changeset
509 *
dceb17481b99 4045 zfs write throttle & i/o scheduler performance work
Matthew Ahrens <mahrens@delphix.com>
parents: 14159
diff changeset
510 * Note: The assumption is that we *know* these blocks will be needed
dceb17481b99 4045 zfs write throttle & i/o scheduler performance work
Matthew Ahrens <mahrens@delphix.com>
parents: 14159
diff changeset
511 * almost immediately. Therefore, the prefetch i/os will be issued at
dceb17481b99 4045 zfs write throttle & i/o scheduler performance work
Matthew Ahrens <mahrens@delphix.com>
parents: 14159
diff changeset
512 * ZIO_PRIORITY_SYNC_READ
dceb17481b99 4045 zfs write throttle & i/o scheduler performance work
Matthew Ahrens <mahrens@delphix.com>
parents: 14159
diff changeset
513 *
dceb17481b99 4045 zfs write throttle & i/o scheduler performance work
Matthew Ahrens <mahrens@delphix.com>
parents: 14159
diff changeset
514 * Note: indirect blocks and other metadata will be read synchronously,
dceb17481b99 4045 zfs write throttle & i/o scheduler performance work
Matthew Ahrens <mahrens@delphix.com>
parents: 14159
diff changeset
515 * causing this function to block if they are not already cached.
dceb17481b99 4045 zfs write throttle & i/o scheduler performance work
Matthew Ahrens <mahrens@delphix.com>
parents: 14159
diff changeset
516 */
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
517 void
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
518 dmu_prefetch(objset_t *os, uint64_t object, uint64_t offset, uint64_t len)
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
519 {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
520 dnode_t *dn;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
521 uint64_t blkid;
14164
dceb17481b99 4045 zfs write throttle & i/o scheduler performance work
Matthew Ahrens <mahrens@delphix.com>
parents: 14159
diff changeset
522 int nblks, err;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
523
2986
c782fcf7a319 6485204 more tuneable tweakin
ek110237
parents: 2926
diff changeset
524 if (zfs_prefetch_disable)
c782fcf7a319 6485204 more tuneable tweakin
ek110237
parents: 2926
diff changeset
525 return;
c782fcf7a319 6485204 more tuneable tweakin
ek110237
parents: 2926
diff changeset
526
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
527 if (len == 0) { /* they're interested in the bonus buffer */
12684
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
528 dn = DMU_META_DNODE(os);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
529
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
530 if (object == 0 || object >= DN_MAX_OBJECT)
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
531 return;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
532
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
533 rw_enter(&dn->dn_struct_rwlock, RW_READER);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
534 blkid = dbuf_whichblock(dn, object * sizeof (dnode_phys_t));
14164
dceb17481b99 4045 zfs write throttle & i/o scheduler performance work
Matthew Ahrens <mahrens@delphix.com>
parents: 14159
diff changeset
535 dbuf_prefetch(dn, blkid, ZIO_PRIORITY_SYNC_READ);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
536 rw_exit(&dn->dn_struct_rwlock);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
537 return;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
538 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
539
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
540 /*
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
541 * XXX - Note, if the dnode for the requested object is not
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
542 * already cached, we will do a *synchronous* read in the
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
543 * dnode_hold() call. The same is true for any indirects.
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
544 */
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10242
diff changeset
545 err = dnode_hold(os, object, FTAG, &dn);
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
546 if (err != 0)
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
547 return;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
548
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
549 rw_enter(&dn->dn_struct_rwlock, RW_READER);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
550 if (dn->dn_datablkshift) {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
551 int blkshift = dn->dn_datablkshift;
14164
dceb17481b99 4045 zfs write throttle & i/o scheduler performance work
Matthew Ahrens <mahrens@delphix.com>
parents: 14159
diff changeset
552 nblks = (P2ROUNDUP(offset + len, 1 << blkshift) -
dceb17481b99 4045 zfs write throttle & i/o scheduler performance work
Matthew Ahrens <mahrens@delphix.com>
parents: 14159
diff changeset
553 P2ALIGN(offset, 1 << blkshift)) >> blkshift;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
554 } else {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
555 nblks = (offset < dn->dn_datablksz);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
556 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
557
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
558 if (nblks != 0) {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
559 blkid = dbuf_whichblock(dn, offset);
14164
dceb17481b99 4045 zfs write throttle & i/o scheduler performance work
Matthew Ahrens <mahrens@delphix.com>
parents: 14159
diff changeset
560 for (int i = 0; i < nblks; i++)
dceb17481b99 4045 zfs write throttle & i/o scheduler performance work
Matthew Ahrens <mahrens@delphix.com>
parents: 14159
diff changeset
561 dbuf_prefetch(dn, blkid + i, ZIO_PRIORITY_SYNC_READ);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
562 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
563
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
564 rw_exit(&dn->dn_struct_rwlock);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
565
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
566 dnode_rele(dn, FTAG);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
567 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
568
9950
78fc41aa9bc5 6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents: 9512
diff changeset
569 /*
78fc41aa9bc5 6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents: 9512
diff changeset
570 * Get the next "chunk" of file data to free. We traverse the file from
78fc41aa9bc5 6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents: 9512
diff changeset
571 * the end so that the file gets shorter over time (if we crashes in the
78fc41aa9bc5 6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents: 9512
diff changeset
572 * middle, this will leave us in a better state). We find allocated file
78fc41aa9bc5 6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents: 9512
diff changeset
573 * data by simply searching the allocated level 1 indirects.
14151
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
574 *
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
575 * On input, *start should be the first offset that does not need to be
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
576 * freed (e.g. "offset + length"). On return, *start will be the first
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
577 * offset that should be freed.
9950
78fc41aa9bc5 6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents: 9512
diff changeset
578 */
6992
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
579 static int
14151
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
580 get_next_chunk(dnode_t *dn, uint64_t *start, uint64_t minimum)
6992
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
581 {
14151
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
582 uint64_t maxblks = DMU_MAX_ACCESS >> (dn->dn_indblkshift + 1);
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
583 /* bytes of data covered by a level-1 indirect block */
9950
78fc41aa9bc5 6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents: 9512
diff changeset
584 uint64_t iblkrange =
7385
f69ff8507427 6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O
Mark Maybee <Mark.Maybee@Sun.COM>
parents: 7315
diff changeset
585 dn->dn_datablksz * EPB(dn->dn_indblkshift, SPA_BLKPTRSHIFT);
6992
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
586
14151
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
587 ASSERT3U(minimum, <=, *start);
6992
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
588
14151
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
589 if (*start - minimum <= iblkrange * maxblks) {
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
590 *start = minimum;
6992
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
591 return (0);
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
592 }
9950
78fc41aa9bc5 6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents: 9512
diff changeset
593 ASSERT(ISP2(iblkrange));
7385
f69ff8507427 6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O
Mark Maybee <Mark.Maybee@Sun.COM>
parents: 7315
diff changeset
594
14151
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
595 for (uint64_t blks = 0; *start > minimum && blks < maxblks; blks++) {
7385
f69ff8507427 6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O
Mark Maybee <Mark.Maybee@Sun.COM>
parents: 7315
diff changeset
596 int err;
6992
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
597
14151
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
598 /*
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
599 * dnode_next_offset(BACKWARDS) will find an allocated L1
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
600 * indirect block at or before the input offset. We must
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
601 * decrement *start so that it is at the end of the region
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
602 * to search.
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
603 */
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
604 (*start)--;
6992
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
605 err = dnode_next_offset(dn,
9950
78fc41aa9bc5 6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents: 9512
diff changeset
606 DNODE_FIND_BACKWARDS, start, 2, 1, 0);
6992
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
607
14151
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
608 /* if there are no indirect blocks before start, we are done */
9950
78fc41aa9bc5 6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents: 9512
diff changeset
609 if (err == ESRCH) {
14151
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
610 *start = minimum;
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
611 break;
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
612 } else if (err != 0) {
9950
78fc41aa9bc5 6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents: 9512
diff changeset
613 return (err);
6992
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
614 }
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
615
14151
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
616 /* set start to the beginning of this L1 indirect */
9950
78fc41aa9bc5 6792701 Removing large holey file does not free space
Mark Maybee <Mark.Maybee@Sun.COM>
parents: 9512
diff changeset
617 *start = P2ALIGN(*start, iblkrange);
6992
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
618 }
14151
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
619 if (*start < minimum)
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
620 *start = minimum;
6992
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
621 return (0);
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
622 }
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
623
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
624 static int
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
625 dmu_free_long_range_impl(objset_t *os, dnode_t *dn, uint64_t offset,
14151
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
626 uint64_t length)
6992
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
627 {
14151
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
628 uint64_t object_size = (dn->dn_maxblkid + 1) * dn->dn_datablksz;
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
629 int err;
6992
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
630
14151
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
631 if (offset >= object_size)
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
632 return (0);
6992
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
633
14151
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
634 if (length == DMU_OBJECT_END || offset + length > object_size)
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
635 length = object_size - offset;
6992
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
636
14151
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
637 while (length != 0) {
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
638 uint64_t chunk_end, chunk_begin;
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
639
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
640 chunk_end = chunk_begin = offset + length;
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
641
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
642 /* move chunk_begin backwards to the beginning of this chunk */
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
643 err = get_next_chunk(dn, &chunk_begin, offset);
6992
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
644 if (err)
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
645 return (err);
14151
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
646 ASSERT3U(chunk_begin, >=, offset);
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
647 ASSERT3U(chunk_begin, <=, chunk_end);
6992
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
648
14151
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
649 dmu_tx_t *tx = dmu_tx_create(os);
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
650 dmu_tx_hold_free(tx, dn->dn_object,
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
651 chunk_begin, chunk_end - chunk_begin);
6992
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
652 err = dmu_tx_assign(tx, TXG_WAIT);
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
653 if (err) {
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
654 dmu_tx_abort(tx);
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
655 return (err);
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
656 }
14151
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
657 dnode_free_range(dn, chunk_begin, chunk_end - chunk_begin, tx);
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
658 dmu_tx_commit(tx);
6992
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
659
14151
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
660 length -= chunk_end - chunk_begin;
6992
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
661 }
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
662 return (0);
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
663 }
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
664
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
665 int
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
666 dmu_free_long_range(objset_t *os, uint64_t object,
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
667 uint64_t offset, uint64_t length)
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
668 {
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
669 dnode_t *dn;
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
670 int err;
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
671
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10242
diff changeset
672 err = dnode_hold(os, object, FTAG, &dn);
6992
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
673 if (err != 0)
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
674 return (err);
14151
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
675 err = dmu_free_long_range_impl(os, dn, offset, length);
14172
be36a38bac3d 4082 zfs receive gets EFBIG from dmu_tx_hold_free()
Matthew Ahrens <mahrens@delphix.com>
parents: 14164
diff changeset
676
be36a38bac3d 4082 zfs receive gets EFBIG from dmu_tx_hold_free()
Matthew Ahrens <mahrens@delphix.com>
parents: 14164
diff changeset
677 /*
be36a38bac3d 4082 zfs receive gets EFBIG from dmu_tx_hold_free()
Matthew Ahrens <mahrens@delphix.com>
parents: 14164
diff changeset
678 * It is important to zero out the maxblkid when freeing the entire
be36a38bac3d 4082 zfs receive gets EFBIG from dmu_tx_hold_free()
Matthew Ahrens <mahrens@delphix.com>
parents: 14164
diff changeset
679 * file, so that (a) subsequent calls to dmu_free_long_range_impl()
be36a38bac3d 4082 zfs receive gets EFBIG from dmu_tx_hold_free()
Matthew Ahrens <mahrens@delphix.com>
parents: 14164
diff changeset
680 * will take the fast path, and (b) dnode_reallocate() can verify
be36a38bac3d 4082 zfs receive gets EFBIG from dmu_tx_hold_free()
Matthew Ahrens <mahrens@delphix.com>
parents: 14164
diff changeset
681 * that the entire file has been freed.
be36a38bac3d 4082 zfs receive gets EFBIG from dmu_tx_hold_free()
Matthew Ahrens <mahrens@delphix.com>
parents: 14164
diff changeset
682 */
be36a38bac3d 4082 zfs receive gets EFBIG from dmu_tx_hold_free()
Matthew Ahrens <mahrens@delphix.com>
parents: 14164
diff changeset
683 if (offset == 0 && length == DMU_OBJECT_END)
be36a38bac3d 4082 zfs receive gets EFBIG from dmu_tx_hold_free()
Matthew Ahrens <mahrens@delphix.com>
parents: 14164
diff changeset
684 dn->dn_maxblkid = 0;
be36a38bac3d 4082 zfs receive gets EFBIG from dmu_tx_hold_free()
Matthew Ahrens <mahrens@delphix.com>
parents: 14164
diff changeset
685
6992
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
686 dnode_rele(dn, FTAG);
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
687 return (err);
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
688 }
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
689
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
690 int
14151
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
691 dmu_free_long_object(objset_t *os, uint64_t object)
6992
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
692 {
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
693 dmu_tx_t *tx;
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
694 int err;
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
695
14151
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
696 err = dmu_free_long_range(os, object, 0, DMU_OBJECT_END);
6992
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
697 if (err != 0)
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
698 return (err);
14151
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
699
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
700 tx = dmu_tx_create(os);
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
701 dmu_tx_hold_bonus(tx, object);
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
702 dmu_tx_hold_free(tx, object, 0, DMU_OBJECT_END);
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
703 err = dmu_tx_assign(tx, TXG_WAIT);
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
704 if (err == 0) {
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
705 err = dmu_object_free(os, object, tx);
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
706 dmu_tx_commit(tx);
6992
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
707 } else {
14151
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
708 dmu_tx_abort(tx);
6992
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
709 }
14151
189ec27885ae 4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Matthew Ahrens <mahrens@delphix.com>
parents: 14045
diff changeset
710
6992
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
711 return (err);
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
712 }
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
713
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
714 int
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
715 dmu_free_range(objset_t *os, uint64_t object, uint64_t offset,
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
716 uint64_t size, dmu_tx_t *tx)
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
717 {
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
718 dnode_t *dn;
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10242
diff changeset
719 int err = dnode_hold(os, object, FTAG, &dn);
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
720 if (err)
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
721 return (err);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
722 ASSERT(offset < UINT64_MAX);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
723 ASSERT(size == -1ULL || size <= UINT64_MAX - offset);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
724 dnode_free_range(dn, offset, size, tx);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
725 dnode_rele(dn, FTAG);
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
726 return (0);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
727 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
728
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
729 int
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
730 dmu_read(objset_t *os, uint64_t object, uint64_t offset, uint64_t size,
9512
64cafcbcc337 6801810 Commit of aligned streaming rewrites to ZIL device causes unwanted disk reads
Neil Perrin <Neil.Perrin@Sun.COM>
parents: 9412
diff changeset
731 void *buf, uint32_t flags)
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
732 {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
733 dnode_t *dn;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
734 dmu_buf_t **dbp;
10209
91f47f0e7728 6830541 zfs_get_data trips on a verify
Mark J Musante <Mark.Musante@Sun.COM>
parents: 9951
diff changeset
735 int numbufs, err;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
736
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10242
diff changeset
737 err = dnode_hold(os, object, FTAG, &dn);
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
738 if (err)
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
739 return (err);
3638
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching
billm
parents: 3547
diff changeset
740
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching
billm
parents: 3547
diff changeset
741 /*
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching
billm
parents: 3547
diff changeset
742 * Deal with odd block sizes, where there can't be data past the first
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching
billm
parents: 3547
diff changeset
743 * block. If we ever do the tail block optimization, we will need to
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching
billm
parents: 3547
diff changeset
744 * handle that here as well.
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching
billm
parents: 3547
diff changeset
745 */
10209
91f47f0e7728 6830541 zfs_get_data trips on a verify
Mark J Musante <Mark.Musante@Sun.COM>
parents: 9951
diff changeset
746 if (dn->dn_maxblkid == 0) {
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
747 int newsz = offset > dn->dn_datablksz ? 0 :
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
748 MIN(size, dn->dn_datablksz - offset);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
749 bzero((char *)buf + newsz, size - newsz);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
750 size = newsz;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
751 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
752
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
753 while (size > 0) {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
754 uint64_t mylen = MIN(size, DMU_MAX_ACCESS / 2);
10209
91f47f0e7728 6830541 zfs_get_data trips on a verify
Mark J Musante <Mark.Musante@Sun.COM>
parents: 9951
diff changeset
755 int i;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
756
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
757 /*
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
758 * NB: we could do this block-at-a-time, but it's nice
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
759 * to be reading in parallel.
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
760 */
2885
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2743
diff changeset
761 err = dmu_buf_hold_array_by_dnode(dn, offset, mylen,
9512
64cafcbcc337 6801810 Commit of aligned streaming rewrites to ZIL device causes unwanted disk reads
Neil Perrin <Neil.Perrin@Sun.COM>
parents: 9412
diff changeset
762 TRUE, FTAG, &numbufs, &dbp, flags);
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
763 if (err)
4944
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents: 4543
diff changeset
764 break;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
765
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
766 for (i = 0; i < numbufs; i++) {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
767 int tocpy;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
768 int bufoff;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
769 dmu_buf_t *db = dbp[i];
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
770
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
771 ASSERT(size > 0);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
772
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
773 bufoff = offset - db->db_offset;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
774 tocpy = (int)MIN(db->db_size - bufoff, size);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
775
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
776 bcopy((char *)db->db_data + bufoff, buf, tocpy);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
777
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
778 offset += tocpy;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
779 size -= tocpy;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
780 buf = (char *)buf + tocpy;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
781 }
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
782 dmu_buf_rele_array(dbp, numbufs, FTAG);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
783 }
2885
c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft
ahrens
parents: 2743
diff changeset
784 dnode_rele(dn, FTAG);
4944
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008)
maybee
parents: 4543
diff changeset
785 return (err);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
786 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
787
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
788 void
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
789 dmu_write(objset_t *os, uint64_t object, uint64_t offset, uint64_t size,
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
790 const void *buf, dmu_tx_t *tx)
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
791 {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
792 dmu_buf_t **dbp;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
793 int numbufs, i;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
794
2391
2fa3fd1db808 6447377 ZFS prefetch is inconsistant
maybee
parents: 2237
diff changeset
795 if (size == 0)
2fa3fd1db808 6447377 ZFS prefetch is inconsistant
maybee
parents: 2237
diff changeset
796 return;
2fa3fd1db808 6447377 ZFS prefetch is inconsistant
maybee
parents: 2237
diff changeset
797
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
798 VERIFY(0 == dmu_buf_hold_array(os, object, offset, size,
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
799 FALSE, FTAG, &numbufs, &dbp));
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
800
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
801 for (i = 0; i < numbufs; i++) {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
802 int tocpy;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
803 int bufoff;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
804 dmu_buf_t *db = dbp[i];
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
805
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
806 ASSERT(size > 0);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
807
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
808 bufoff = offset - db->db_offset;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
809 tocpy = (int)MIN(db->db_size - bufoff, size);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
810
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
811 ASSERT(i == 0 || i == numbufs-1 || tocpy == db->db_size);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
812
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
813 if (tocpy == db->db_size)
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
814 dmu_buf_will_fill(db, tx);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
815 else
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
816 dmu_buf_will_dirty(db, tx);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
817
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
818 bcopy(buf, (char *)db->db_data + bufoff, tocpy);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
819
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
820 if (tocpy == db->db_size)
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
821 dmu_buf_fill_done(db, tx);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
822
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
823 offset += tocpy;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
824 size -= tocpy;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
825 buf = (char *)buf + tocpy;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
826 }
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
827 dmu_buf_rele_array(dbp, numbufs, FTAG);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
828 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
829
7872
40a9434212f6 6646775 Speed up the dumpifying process for zvols
Tim Haley <Tim.Haley@Sun.COM>
parents: 7754
diff changeset
830 void
40a9434212f6 6646775 Speed up the dumpifying process for zvols
Tim Haley <Tim.Haley@Sun.COM>
parents: 7754
diff changeset
831 dmu_prealloc(objset_t *os, uint64_t object, uint64_t offset, uint64_t size,
40a9434212f6 6646775 Speed up the dumpifying process for zvols
Tim Haley <Tim.Haley@Sun.COM>
parents: 7754
diff changeset
832 dmu_tx_t *tx)
40a9434212f6 6646775 Speed up the dumpifying process for zvols
Tim Haley <Tim.Haley@Sun.COM>
parents: 7754
diff changeset
833 {
40a9434212f6 6646775 Speed up the dumpifying process for zvols
Tim Haley <Tim.Haley@Sun.COM>
parents: 7754
diff changeset
834 dmu_buf_t **dbp;
40a9434212f6 6646775 Speed up the dumpifying process for zvols
Tim Haley <Tim.Haley@Sun.COM>
parents: 7754
diff changeset
835 int numbufs, i;
40a9434212f6 6646775 Speed up the dumpifying process for zvols
Tim Haley <Tim.Haley@Sun.COM>
parents: 7754
diff changeset
836
40a9434212f6 6646775 Speed up the dumpifying process for zvols
Tim Haley <Tim.Haley@Sun.COM>
parents: 7754
diff changeset
837 if (size == 0)
40a9434212f6 6646775 Speed up the dumpifying process for zvols
Tim Haley <Tim.Haley@Sun.COM>
parents: 7754
diff changeset
838 return;
40a9434212f6 6646775 Speed up the dumpifying process for zvols
Tim Haley <Tim.Haley@Sun.COM>
parents: 7754
diff changeset
839
40a9434212f6 6646775 Speed up the dumpifying process for zvols
Tim Haley <Tim.Haley@Sun.COM>
parents: 7754
diff changeset
840 VERIFY(0 == dmu_buf_hold_array(os, object, offset, size,
40a9434212f6 6646775 Speed up the dumpifying process for zvols
Tim Haley <Tim.Haley@Sun.COM>
parents: 7754
diff changeset
841 FALSE, FTAG, &numbufs, &dbp));
40a9434212f6 6646775 Speed up the dumpifying process for zvols
Tim Haley <Tim.Haley@Sun.COM>
parents: 7754
diff changeset
842
40a9434212f6 6646775 Speed up the dumpifying process for zvols
Tim Haley <Tim.Haley@Sun.COM>
parents: 7754
diff changeset
843 for (i = 0; i < numbufs; i++) {
40a9434212f6 6646775 Speed up the dumpifying process for zvols
Tim Haley <Tim.Haley@Sun.COM>
parents: 7754
diff changeset
844 dmu_buf_t *db = dbp[i];
40a9434212f6 6646775 Speed up the dumpifying process for zvols
Tim Haley <Tim.Haley@Sun.COM>
parents: 7754
diff changeset
845
40a9434212f6 6646775 Speed up the dumpifying process for zvols
Tim Haley <Tim.Haley@Sun.COM>
parents: 7754
diff changeset
846 dmu_buf_will_not_fill(db, tx);
40a9434212f6 6646775 Speed up the dumpifying process for zvols
Tim Haley <Tim.Haley@Sun.COM>
parents: 7754
diff changeset
847 }
40a9434212f6 6646775 Speed up the dumpifying process for zvols
Tim Haley <Tim.Haley@Sun.COM>
parents: 7754
diff changeset
848 dmu_buf_rele_array(dbp, numbufs, FTAG);
40a9434212f6 6646775 Speed up the dumpifying process for zvols
Tim Haley <Tim.Haley@Sun.COM>
parents: 7754
diff changeset
849 }
40a9434212f6 6646775 Speed up the dumpifying process for zvols
Tim Haley <Tim.Haley@Sun.COM>
parents: 7754
diff changeset
850
11539
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
851 /*
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
852 * DMU support for xuio
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
853 */
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
854 kstat_t *xuio_ksp = NULL;
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
855
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
856 int
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
857 dmu_xuio_init(xuio_t *xuio, int nblk)
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
858 {
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
859 dmu_xuio_t *priv;
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
860 uio_t *uio = &xuio->xu_uio;
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
861
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
862 uio->uio_iovcnt = nblk;
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
863 uio->uio_iov = kmem_zalloc(nblk * sizeof (iovec_t), KM_SLEEP);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
864
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
865 priv = kmem_zalloc(sizeof (dmu_xuio_t), KM_SLEEP);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
866 priv->cnt = nblk;
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
867 priv->bufs = kmem_zalloc(nblk * sizeof (arc_buf_t *), KM_SLEEP);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
868 priv->iovp = uio->uio_iov;
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
869 XUIO_XUZC_PRIV(xuio) = priv;
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
870
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
871 if (XUIO_XUZC_RW(xuio) == UIO_READ)
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
872 XUIOSTAT_INCR(xuiostat_onloan_rbuf, nblk);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
873 else
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
874 XUIOSTAT_INCR(xuiostat_onloan_wbuf, nblk);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
875
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
876 return (0);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
877 }
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
878
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
879 void
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
880 dmu_xuio_fini(xuio_t *xuio)
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
881 {
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
882 dmu_xuio_t *priv = XUIO_XUZC_PRIV(xuio);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
883 int nblk = priv->cnt;
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
884
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
885 kmem_free(priv->iovp, nblk * sizeof (iovec_t));
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
886 kmem_free(priv->bufs, nblk * sizeof (arc_buf_t *));
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
887 kmem_free(priv, sizeof (dmu_xuio_t));
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
888
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
889 if (XUIO_XUZC_RW(xuio) == UIO_READ)
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
890 XUIOSTAT_INCR(xuiostat_onloan_rbuf, -nblk);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
891 else
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
892 XUIOSTAT_INCR(xuiostat_onloan_wbuf, -nblk);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
893 }
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
894
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
895 /*
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
896 * Initialize iov[priv->next] and priv->bufs[priv->next] with { off, n, abuf }
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
897 * and increase priv->next by 1.
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
898 */
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
899 int
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
900 dmu_xuio_add(xuio_t *xuio, arc_buf_t *abuf, offset_t off, size_t n)
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
901 {
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
902 struct iovec *iov;
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
903 uio_t *uio = &xuio->xu_uio;
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
904 dmu_xuio_t *priv = XUIO_XUZC_PRIV(xuio);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
905 int i = priv->next++;
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
906
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
907 ASSERT(i < priv->cnt);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
908 ASSERT(off + n <= arc_buf_size(abuf));
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
909 iov = uio->uio_iov + i;
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
910 iov->iov_base = (char *)abuf->b_data + off;
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
911 iov->iov_len = n;
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
912 priv->bufs[i] = abuf;
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
913 return (0);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
914 }
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
915
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
916 int
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
917 dmu_xuio_cnt(xuio_t *xuio)
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
918 {
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
919 dmu_xuio_t *priv = XUIO_XUZC_PRIV(xuio);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
920 return (priv->cnt);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
921 }
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
922
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
923 arc_buf_t *
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
924 dmu_xuio_arcbuf(xuio_t *xuio, int i)
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
925 {
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
926 dmu_xuio_t *priv = XUIO_XUZC_PRIV(xuio);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
927
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
928 ASSERT(i < priv->cnt);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
929 return (priv->bufs[i]);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
930 }
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
931
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
932 void
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
933 dmu_xuio_clear(xuio_t *xuio, int i)
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
934 {
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
935 dmu_xuio_t *priv = XUIO_XUZC_PRIV(xuio);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
936
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
937 ASSERT(i < priv->cnt);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
938 priv->bufs[i] = NULL;
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
939 }
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
940
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
941 static void
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
942 xuio_stat_init(void)
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
943 {
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
944 xuio_ksp = kstat_create("zfs", 0, "xuio_stats", "misc",
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
945 KSTAT_TYPE_NAMED, sizeof (xuio_stats) / sizeof (kstat_named_t),
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
946 KSTAT_FLAG_VIRTUAL);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
947 if (xuio_ksp != NULL) {
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
948 xuio_ksp->ks_data = &xuio_stats;
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
949 kstat_install(xuio_ksp);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
950 }
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
951 }
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
952
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
953 static void
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
954 xuio_stat_fini(void)
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
955 {
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
956 if (xuio_ksp != NULL) {
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
957 kstat_delete(xuio_ksp);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
958 xuio_ksp = NULL;
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
959 }
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
960 }
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
961
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
962 void
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
963 xuio_stat_wbuf_copied()
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
964 {
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
965 XUIOSTAT_BUMP(xuiostat_wbuf_copied);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
966 }
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
967
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
968 void
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
969 xuio_stat_wbuf_nocopy()
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
970 {
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
971 XUIOSTAT_BUMP(xuiostat_wbuf_nocopy);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
972 }
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
973
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
974 #ifdef _KERNEL
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
975 int
3638
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching
billm
parents: 3547
diff changeset
976 dmu_read_uio(objset_t *os, uint64_t object, uio_t *uio, uint64_t size)
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching
billm
parents: 3547
diff changeset
977 {
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching
billm
parents: 3547
diff changeset
978 dmu_buf_t **dbp;
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching
billm
parents: 3547
diff changeset
979 int numbufs, i, err;
11539
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
980 xuio_t *xuio = NULL;
3638
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching
billm
parents: 3547
diff changeset
981
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching
billm
parents: 3547
diff changeset
982 /*
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching
billm
parents: 3547
diff changeset
983 * NB: we could do this block-at-a-time, but it's nice
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching
billm
parents: 3547
diff changeset
984 * to be reading in parallel.
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching
billm
parents: 3547
diff changeset
985 */
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching
billm
parents: 3547
diff changeset
986 err = dmu_buf_hold_array(os, object, uio->uio_loffset, size, TRUE, FTAG,
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching
billm
parents: 3547
diff changeset
987 &numbufs, &dbp);
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching
billm
parents: 3547
diff changeset
988 if (err)
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching
billm
parents: 3547
diff changeset
989 return (err);
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching
billm
parents: 3547
diff changeset
990
11539
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
991 if (uio->uio_extflg == UIO_XUIO)
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
992 xuio = (xuio_t *)uio;
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
993
3638
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching
billm
parents: 3547
diff changeset
994 for (i = 0; i < numbufs; i++) {
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching
billm
parents: 3547
diff changeset
995 int tocpy;
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching
billm
parents: 3547
diff changeset
996 int bufoff;
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching
billm
parents: 3547
diff changeset
997 dmu_buf_t *db = dbp[i];
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching
billm
parents: 3547
diff changeset
998
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching
billm
parents: 3547
diff changeset
999 ASSERT(size > 0);
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching
billm
parents: 3547
diff changeset
1000
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching
billm
parents: 3547
diff changeset
1001 bufoff = uio->uio_loffset - db->db_offset;
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching
billm
parents: 3547
diff changeset
1002 tocpy = (int)MIN(db->db_size - bufoff, size);
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching
billm
parents: 3547
diff changeset
1003
11539
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
1004 if (xuio) {
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
1005 dmu_buf_impl_t *dbi = (dmu_buf_impl_t *)db;
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
1006 arc_buf_t *dbuf_abuf = dbi->db_buf;
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
1007 arc_buf_t *abuf = dbuf_loan_arcbuf(dbi);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
1008 err = dmu_xuio_add(xuio, abuf, bufoff, tocpy);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
1009 if (!err) {
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
1010 uio->uio_resid -= tocpy;
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
1011 uio->uio_loffset += tocpy;
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
1012 }
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
1013
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
1014 if (abuf == dbuf_abuf)
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
1015 XUIOSTAT_BUMP(xuiostat_rbuf_nocopy);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
1016 else
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
1017 XUIOSTAT_BUMP(xuiostat_rbuf_copied);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
1018 } else {
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
1019 err = uiomove((char *)db->db_data + bufoff, tocpy,
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
1020 UIO_READ, uio);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
1021 }
3638
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching
billm
parents: 3547
diff changeset
1022 if (err)
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching
billm
parents: 3547
diff changeset
1023 break;
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching
billm
parents: 3547
diff changeset
1024
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching
billm
parents: 3547
diff changeset
1025 size -= tocpy;
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching
billm
parents: 3547
diff changeset
1026 }
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching
billm
parents: 3547
diff changeset
1027 dmu_buf_rele_array(dbp, numbufs, FTAG);
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching
billm
parents: 3547
diff changeset
1028
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching
billm
parents: 3547
diff changeset
1029 return (err);
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching
billm
parents: 3547
diff changeset
1030 }
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching
billm
parents: 3547
diff changeset
1031
12123
bb40732a982e 6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents: 11935
diff changeset
1032 static int
bb40732a982e 6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents: 11935
diff changeset
1033 dmu_write_uio_dnode(dnode_t *dn, uio_t *uio, uint64_t size, dmu_tx_t *tx)
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1034 {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1035 dmu_buf_t **dbp;
12123
bb40732a982e 6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents: 11935
diff changeset
1036 int numbufs;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1037 int err = 0;
12123
bb40732a982e 6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents: 11935
diff changeset
1038 int i;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1039
12123
bb40732a982e 6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents: 11935
diff changeset
1040 err = dmu_buf_hold_array_by_dnode(dn, uio->uio_loffset, size,
bb40732a982e 6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents: 11935
diff changeset
1041 FALSE, FTAG, &numbufs, &dbp, DMU_READ_PREFETCH);
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
1042 if (err)
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
1043 return (err);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1044
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1045 for (i = 0; i < numbufs; i++) {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1046 int tocpy;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1047 int bufoff;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1048 dmu_buf_t *db = dbp[i];
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1049
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1050 ASSERT(size > 0);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1051
3638
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching
billm
parents: 3547
diff changeset
1052 bufoff = uio->uio_loffset - db->db_offset;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1053 tocpy = (int)MIN(db->db_size - bufoff, size);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1054
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1055 ASSERT(i == 0 || i == numbufs-1 || tocpy == db->db_size);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1056
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1057 if (tocpy == db->db_size)
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1058 dmu_buf_will_fill(db, tx);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1059 else
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1060 dmu_buf_will_dirty(db, tx);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1061
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1062 /*
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1063 * XXX uiomove could block forever (eg. nfs-backed
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1064 * pages). There needs to be a uiolockdown() function
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1065 * to lock the pages in memory, so that uiomove won't
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1066 * block.
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1067 */
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1068 err = uiomove((char *)db->db_data + bufoff, tocpy,
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1069 UIO_WRITE, uio);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1070
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1071 if (tocpy == db->db_size)
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1072 dmu_buf_fill_done(db, tx);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1073
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1074 if (err)
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1075 break;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1076
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1077 size -= tocpy;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1078 }
12123
bb40732a982e 6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents: 11935
diff changeset
1079
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
1080 dmu_buf_rele_array(dbp, numbufs, FTAG);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1081 return (err);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1082 }
2688
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1083
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1084 int
12123
bb40732a982e 6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents: 11935
diff changeset
1085 dmu_write_uio_dbuf(dmu_buf_t *zdb, uio_t *uio, uint64_t size,
bb40732a982e 6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents: 11935
diff changeset
1086 dmu_tx_t *tx)
bb40732a982e 6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents: 11935
diff changeset
1087 {
12684
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1088 dmu_buf_impl_t *db = (dmu_buf_impl_t *)zdb;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1089 dnode_t *dn;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1090 int err;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1091
12123
bb40732a982e 6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents: 11935
diff changeset
1092 if (size == 0)
bb40732a982e 6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents: 11935
diff changeset
1093 return (0);
bb40732a982e 6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents: 11935
diff changeset
1094
12684
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1095 DB_DNODE_ENTER(db);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1096 dn = DB_DNODE(db);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1097 err = dmu_write_uio_dnode(dn, uio, size, tx);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1098 DB_DNODE_EXIT(db);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1099
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1100 return (err);
12123
bb40732a982e 6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents: 11935
diff changeset
1101 }
bb40732a982e 6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents: 11935
diff changeset
1102
bb40732a982e 6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents: 11935
diff changeset
1103 int
bb40732a982e 6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents: 11935
diff changeset
1104 dmu_write_uio(objset_t *os, uint64_t object, uio_t *uio, uint64_t size,
bb40732a982e 6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents: 11935
diff changeset
1105 dmu_tx_t *tx)
bb40732a982e 6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents: 11935
diff changeset
1106 {
bb40732a982e 6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents: 11935
diff changeset
1107 dnode_t *dn;
bb40732a982e 6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents: 11935
diff changeset
1108 int err;
bb40732a982e 6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents: 11935
diff changeset
1109
bb40732a982e 6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents: 11935
diff changeset
1110 if (size == 0)
bb40732a982e 6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents: 11935
diff changeset
1111 return (0);
bb40732a982e 6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents: 11935
diff changeset
1112
bb40732a982e 6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents: 11935
diff changeset
1113 err = dnode_hold(os, object, FTAG, &dn);
bb40732a982e 6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents: 11935
diff changeset
1114 if (err)
bb40732a982e 6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents: 11935
diff changeset
1115 return (err);
bb40732a982e 6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents: 11935
diff changeset
1116
bb40732a982e 6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents: 11935
diff changeset
1117 err = dmu_write_uio_dnode(dn, uio, size, tx);
bb40732a982e 6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents: 11935
diff changeset
1118
bb40732a982e 6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents: 11935
diff changeset
1119 dnode_rele(dn, FTAG);
bb40732a982e 6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents: 11935
diff changeset
1120
bb40732a982e 6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents: 11935
diff changeset
1121 return (err);
bb40732a982e 6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents: 11935
diff changeset
1122 }
bb40732a982e 6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents: 11935
diff changeset
1123
bb40732a982e 6572591 meta dnode lookup causes bucket lock contention in dbuf hash
Tim Haley <Tim.Haley@Sun.COM>
parents: 11935
diff changeset
1124 int
2688
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1125 dmu_write_pages(objset_t *os, uint64_t object, uint64_t offset, uint64_t size,
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1126 page_t *pp, dmu_tx_t *tx)
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1127 {
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1128 dmu_buf_t **dbp;
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1129 int numbufs, i;
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1130 int err;
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1131
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1132 if (size == 0)
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1133 return (0);
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1134
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1135 err = dmu_buf_hold_array(os, object, offset, size,
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1136 FALSE, FTAG, &numbufs, &dbp);
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1137 if (err)
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1138 return (err);
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1139
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1140 for (i = 0; i < numbufs; i++) {
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1141 int tocpy, copied, thiscpy;
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1142 int bufoff;
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1143 dmu_buf_t *db = dbp[i];
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1144 caddr_t va;
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1145
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1146 ASSERT(size > 0);
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1147 ASSERT3U(db->db_size, >=, PAGESIZE);
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1148
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1149 bufoff = offset - db->db_offset;
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1150 tocpy = (int)MIN(db->db_size - bufoff, size);
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1151
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1152 ASSERT(i == 0 || i == numbufs-1 || tocpy == db->db_size);
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1153
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1154 if (tocpy == db->db_size)
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1155 dmu_buf_will_fill(db, tx);
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1156 else
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1157 dmu_buf_will_dirty(db, tx);
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1158
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1159 for (copied = 0; copied < tocpy; copied += PAGESIZE) {
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1160 ASSERT3U(pp->p_offset, ==, db->db_offset + bufoff);
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1161 thiscpy = MIN(PAGESIZE, tocpy - copied);
7315
cdba25672122 6735592 "zio" vmem arenas are confusing, not reported separately
Jonathan W Adams <Jonathan.Adams@Sun.COM>
parents: 7237
diff changeset
1162 va = zfs_map_page(pp, S_READ);
2688
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1163 bcopy(va, (char *)db->db_data + bufoff, thiscpy);
7315
cdba25672122 6735592 "zio" vmem arenas are confusing, not reported separately
Jonathan W Adams <Jonathan.Adams@Sun.COM>
parents: 7237
diff changeset
1164 zfs_unmap_page(pp, va);
2688
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1165 pp = pp->p_next;
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1166 bufoff += PAGESIZE;
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1167 }
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1168
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1169 if (tocpy == db->db_size)
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1170 dmu_buf_fill_done(db, tx);
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1171
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1172 offset += tocpy;
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1173 size -= tocpy;
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1174 }
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1175 dmu_buf_rele_array(dbp, numbufs, FTAG);
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1176 return (err);
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store
maybee
parents: 2676
diff changeset
1177 }
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1178 #endif
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1179
9412
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents: 9396
diff changeset
1180 /*
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents: 9396
diff changeset
1181 * Allocate a loaned anonymous arc buffer.
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents: 9396
diff changeset
1182 */
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents: 9396
diff changeset
1183 arc_buf_t *
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents: 9396
diff changeset
1184 dmu_request_arcbuf(dmu_buf_t *handle, int size)
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents: 9396
diff changeset
1185 {
12684
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1186 dmu_buf_impl_t *db = (dmu_buf_impl_t *)handle;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1187 spa_t *spa;
9412
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents: 9396
diff changeset
1188
12684
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1189 DB_GET_SPA(&spa, db);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1190 return (arc_loan_buf(spa, size));
9412
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents: 9396
diff changeset
1191 }
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents: 9396
diff changeset
1192
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents: 9396
diff changeset
1193 /*
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents: 9396
diff changeset
1194 * Free a loaned arc buffer.
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents: 9396
diff changeset
1195 */
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents: 9396
diff changeset
1196 void
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents: 9396
diff changeset
1197 dmu_return_arcbuf(arc_buf_t *buf)
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents: 9396
diff changeset
1198 {
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents: 9396
diff changeset
1199 arc_return_buf(buf, FTAG);
13973
4972ab336f54 3464 zfs synctask code needs restructuring
Matthew Ahrens <mahrens@delphix.com>
parents: 13952
diff changeset
1200 VERIFY(arc_buf_remove_ref(buf, FTAG));
9412
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents: 9396
diff changeset
1201 }
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents: 9396
diff changeset
1202
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents: 9396
diff changeset
1203 /*
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents: 9396
diff changeset
1204 * When possible directly assign passed loaned arc buffer to a dbuf.
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents: 9396
diff changeset
1205 * If this is not possible copy the contents of passed arc buf via
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents: 9396
diff changeset
1206 * dmu_write().
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents: 9396
diff changeset
1207 */
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents: 9396
diff changeset
1208 void
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents: 9396
diff changeset
1209 dmu_assign_arcbuf(dmu_buf_t *handle, uint64_t offset, arc_buf_t *buf,
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents: 9396
diff changeset
1210 dmu_tx_t *tx)
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents: 9396
diff changeset
1211 {
12684
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1212 dmu_buf_impl_t *dbuf = (dmu_buf_impl_t *)handle;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1213 dnode_t *dn;
9412
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents: 9396
diff changeset
1214 dmu_buf_impl_t *db;
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents: 9396
diff changeset
1215 uint32_t blksz = (uint32_t)arc_buf_size(buf);
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents: 9396
diff changeset
1216 uint64_t blkid;
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents: 9396
diff changeset
1217
12684
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1218 DB_DNODE_ENTER(dbuf);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1219 dn = DB_DNODE(dbuf);
9412
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents: 9396
diff changeset
1220 rw_enter(&dn->dn_struct_rwlock, RW_READER);
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents: 9396
diff changeset
1221 blkid = dbuf_whichblock(dn, offset);
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents: 9396
diff changeset
1222 VERIFY((db = dbuf_hold(dn, blkid, FTAG)) != NULL);
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents: 9396
diff changeset
1223 rw_exit(&dn->dn_struct_rwlock);
12684
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1224 DB_DNODE_EXIT(dbuf);
9412
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents: 9396
diff changeset
1225
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents: 9396
diff changeset
1226 if (offset == db->db.db_offset && blksz == db->db.db_size) {
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents: 9396
diff changeset
1227 dbuf_assign_arcbuf(db, buf, tx);
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents: 9396
diff changeset
1228 dbuf_rele(db, FTAG);
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents: 9396
diff changeset
1229 } else {
12684
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1230 objset_t *os;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1231 uint64_t object;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1232
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1233 DB_DNODE_ENTER(dbuf);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1234 dn = DB_DNODE(dbuf);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1235 os = dn->dn_objset;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1236 object = dn->dn_object;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1237 DB_DNODE_EXIT(dbuf);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1238
9412
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents: 9396
diff changeset
1239 dbuf_rele(db, FTAG);
12684
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1240 dmu_write(os, object, offset, blksz, buf->b_data, tx);
9412
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents: 9396
diff changeset
1241 dmu_return_arcbuf(buf);
11539
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
1242 XUIOSTAT_BUMP(xuiostat_wbuf_copied);
9412
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents: 9396
diff changeset
1243 }
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents: 9396
diff changeset
1244 }
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents: 9396
diff changeset
1245
2237
45affe88ed99 6416482 filebench oltp workload hangs in zfs
maybee
parents: 2199
diff changeset
1246 typedef struct {
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1247 dbuf_dirty_record_t *dsa_dr;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1248 dmu_sync_cb_t *dsa_done;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1249 zgd_t *dsa_zgd;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1250 dmu_tx_t *dsa_tx;
3547
e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents: 3444
diff changeset
1251 } dmu_sync_arg_t;
2237
45affe88ed99 6416482 filebench oltp workload hangs in zfs
maybee
parents: 2199
diff changeset
1252
45affe88ed99 6416482 filebench oltp workload hangs in zfs
maybee
parents: 2199
diff changeset
1253 /* ARGSUSED */
45affe88ed99 6416482 filebench oltp workload hangs in zfs
maybee
parents: 2199
diff changeset
1254 static void
7754
b80e4842ad54 6754011 SPA 3.0: lock breakup, i/o pipeline refactoring, device failure handling
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 7468
diff changeset
1255 dmu_sync_ready(zio_t *zio, arc_buf_t *buf, void *varg)
b80e4842ad54 6754011 SPA 3.0: lock breakup, i/o pipeline refactoring, device failure handling
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 7468
diff changeset
1256 {
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1257 dmu_sync_arg_t *dsa = varg;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1258 dmu_buf_t *db = dsa->dsa_zgd->zgd_db;
7754
b80e4842ad54 6754011 SPA 3.0: lock breakup, i/o pipeline refactoring, device failure handling
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 7468
diff changeset
1259 blkptr_t *bp = zio->io_bp;
10800
469478b180d9 6880764 fsync on zfs is broken if writes are greater than 32kb on a hard crash and no log attached
Neil Perrin <Neil.Perrin@Sun.COM>
parents: 10474
diff changeset
1260
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1261 if (zio->io_error == 0) {
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1262 if (BP_IS_HOLE(bp)) {
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1263 /*
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1264 * A block of zeros may compress to a hole, but the
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1265 * block size still needs to be known for replay.
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1266 */
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1267 BP_SET_LSIZE(bp, db->db_size);
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1268 } else {
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1269 ASSERT(BP_GET_LEVEL(bp) == 0);
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1270 bp->blk_fill = 1;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1271 }
7754
b80e4842ad54 6754011 SPA 3.0: lock breakup, i/o pipeline refactoring, device failure handling
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 7468
diff changeset
1272 }
b80e4842ad54 6754011 SPA 3.0: lock breakup, i/o pipeline refactoring, device failure handling
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 7468
diff changeset
1273 }
b80e4842ad54 6754011 SPA 3.0: lock breakup, i/o pipeline refactoring, device failure handling
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 7468
diff changeset
1274
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1275 static void
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1276 dmu_sync_late_arrival_ready(zio_t *zio)
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1277 {
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1278 dmu_sync_ready(zio, NULL, zio->io_private);
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1279 }
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1280
7754
b80e4842ad54 6754011 SPA 3.0: lock breakup, i/o pipeline refactoring, device failure handling
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 7468
diff changeset
1281 /* ARGSUSED */
b80e4842ad54 6754011 SPA 3.0: lock breakup, i/o pipeline refactoring, device failure handling
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 7468
diff changeset
1282 static void
2237
45affe88ed99 6416482 filebench oltp workload hangs in zfs
maybee
parents: 2199
diff changeset
1283 dmu_sync_done(zio_t *zio, arc_buf_t *buf, void *varg)
45affe88ed99 6416482 filebench oltp workload hangs in zfs
maybee
parents: 2199
diff changeset
1284 {
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1285 dmu_sync_arg_t *dsa = varg;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1286 dbuf_dirty_record_t *dr = dsa->dsa_dr;
3547
e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents: 3444
diff changeset
1287 dmu_buf_impl_t *db = dr->dr_dbuf;
2237
45affe88ed99 6416482 filebench oltp workload hangs in zfs
maybee
parents: 2199
diff changeset
1288
10810
b6b161a6ae4a 6892298 buf->b_hdr->b_state != arc_anon, file: ../../common/fs/zfs/arc.c, line: 2849
Neil Perrin <Neil.Perrin@Sun.COM>
parents: 10800
diff changeset
1289 mutex_enter(&db->db_mtx);
b6b161a6ae4a 6892298 buf->b_hdr->b_state != arc_anon, file: ../../common/fs/zfs/arc.c, line: 2849
Neil Perrin <Neil.Perrin@Sun.COM>
parents: 10800
diff changeset
1290 ASSERT(dr->dt.dl.dr_override_state == DR_IN_DMU_SYNC);
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1291 if (zio->io_error == 0) {
13887
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1292 dr->dt.dl.dr_nopwrite = !!(zio->io_flags & ZIO_FLAG_NOPWRITE);
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1293 if (dr->dt.dl.dr_nopwrite) {
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1294 blkptr_t *bp = zio->io_bp;
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1295 blkptr_t *bp_orig = &zio->io_bp_orig;
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1296 uint8_t chksum = BP_GET_CHECKSUM(bp_orig);
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1297
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1298 ASSERT(BP_EQUAL(bp, bp_orig));
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1299 ASSERT(zio->io_prop.zp_compress != ZIO_COMPRESS_OFF);
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1300 ASSERT(zio_checksum_table[chksum].ci_dedup);
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1301 }
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1302 dr->dt.dl.dr_overridden_by = *zio->io_bp;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1303 dr->dt.dl.dr_override_state = DR_OVERRIDDEN;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1304 dr->dt.dl.dr_copies = zio->io_prop.zp_copies;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1305 if (BP_IS_HOLE(&dr->dt.dl.dr_overridden_by))
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1306 BP_ZERO(&dr->dt.dl.dr_overridden_by);
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1307 } else {
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1308 dr->dt.dl.dr_override_state = DR_NOT_OVERRIDDEN;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1309 }
2237
45affe88ed99 6416482 filebench oltp workload hangs in zfs
maybee
parents: 2199
diff changeset
1310 cv_broadcast(&db->db_changed);
10810
b6b161a6ae4a 6892298 buf->b_hdr->b_state != arc_anon, file: ../../common/fs/zfs/arc.c, line: 2849
Neil Perrin <Neil.Perrin@Sun.COM>
parents: 10800
diff changeset
1311 mutex_exit(&db->db_mtx);
b6b161a6ae4a 6892298 buf->b_hdr->b_state != arc_anon, file: ../../common/fs/zfs/arc.c, line: 2849
Neil Perrin <Neil.Perrin@Sun.COM>
parents: 10800
diff changeset
1312
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1313 dsa->dsa_done(dsa->dsa_zgd, zio->io_error);
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1314
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1315 kmem_free(dsa, sizeof (*dsa));
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1316 }
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1317
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1318 static void
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1319 dmu_sync_late_arrival_done(zio_t *zio)
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1320 {
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1321 blkptr_t *bp = zio->io_bp;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1322 dmu_sync_arg_t *dsa = zio->io_private;
13887
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1323 blkptr_t *bp_orig = &zio->io_bp_orig;
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1324
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1325 if (zio->io_error == 0 && !BP_IS_HOLE(bp)) {
13887
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1326 /*
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1327 * If we didn't allocate a new block (i.e. ZIO_FLAG_NOPWRITE)
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1328 * then there is nothing to do here. Otherwise, free the
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1329 * newly allocated block in this txg.
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1330 */
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1331 if (zio->io_flags & ZIO_FLAG_NOPWRITE) {
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1332 ASSERT(BP_EQUAL(bp, bp_orig));
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1333 } else {
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1334 ASSERT(BP_IS_HOLE(bp_orig) || !BP_EQUAL(bp, bp_orig));
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1335 ASSERT(zio->io_bp->blk_birth == zio->io_txg);
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1336 ASSERT(zio->io_txg > spa_syncing_txg(zio->io_spa));
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1337 zio_free(zio->io_spa, zio->io_txg, zio->io_bp);
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1338 }
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1339 }
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1340
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1341 dmu_tx_commit(dsa->dsa_tx);
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1342
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1343 dsa->dsa_done(dsa->dsa_zgd, zio->io_error);
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1344
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1345 kmem_free(dsa, sizeof (*dsa));
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1346 }
3547
e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents: 3444
diff changeset
1347
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1348 static int
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1349 dmu_sync_late_arrival(zio_t *pio, objset_t *os, dmu_sync_cb_t *done, zgd_t *zgd,
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1350 zio_prop_t *zp, zbookmark_t *zb)
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1351 {
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1352 dmu_sync_arg_t *dsa;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1353 dmu_tx_t *tx;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1354
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1355 tx = dmu_tx_create(os);
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1356 dmu_tx_hold_space(tx, zgd->zgd_db->db_size);
11670
1d964fb5d948 6595532 ZIL is too talkative
Neil Perrin <Neil.Perrin@Sun.COM>
parents: 11539
diff changeset
1357 if (dmu_tx_assign(tx, TXG_WAIT) != 0) {
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1358 dmu_tx_abort(tx);
13980
d7059eb1884c 3598 want to dtrace when errors are generated in zfs
Matthew Ahrens <mahrens@delphix.com>
parents: 13977
diff changeset
1359 /* Make zl_get_data do txg_waited_synced() */
d7059eb1884c 3598 want to dtrace when errors are generated in zfs
Matthew Ahrens <mahrens@delphix.com>
parents: 13977
diff changeset
1360 return (SET_ERROR(EIO));
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1361 }
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1362
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1363 dsa = kmem_alloc(sizeof (dmu_sync_arg_t), KM_SLEEP);
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1364 dsa->dsa_dr = NULL;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1365 dsa->dsa_done = done;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1366 dsa->dsa_zgd = zgd;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1367 dsa->dsa_tx = tx;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1368
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1369 zio_nowait(zio_write(pio, os->os_spa, dmu_tx_get_txg(tx), zgd->zgd_bp,
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1370 zgd->zgd_db->db_data, zgd->zgd_db->db_size, zp,
14164
dceb17481b99 4045 zfs write throttle & i/o scheduler performance work
Matthew Ahrens <mahrens@delphix.com>
parents: 14159
diff changeset
1371 dmu_sync_late_arrival_ready, NULL, dmu_sync_late_arrival_done, dsa,
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1372 ZIO_PRIORITY_SYNC_WRITE, ZIO_FLAG_CANFAIL, zb));
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1373
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1374 return (0);
2237
45affe88ed99 6416482 filebench oltp workload hangs in zfs
maybee
parents: 2199
diff changeset
1375 }
45affe88ed99 6416482 filebench oltp workload hangs in zfs
maybee
parents: 2199
diff changeset
1376
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1377 /*
2237
45affe88ed99 6416482 filebench oltp workload hangs in zfs
maybee
parents: 2199
diff changeset
1378 * Intent log support: sync the block associated with db to disk.
45affe88ed99 6416482 filebench oltp workload hangs in zfs
maybee
parents: 2199
diff changeset
1379 * N.B. and XXX: the caller is responsible for making sure that the
45affe88ed99 6416482 filebench oltp workload hangs in zfs
maybee
parents: 2199
diff changeset
1380 * data isn't changing while dmu_sync() is writing it.
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1381 *
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1382 * Return values:
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1383 *
13887
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1384 * EEXIST: this txg has already been synced, so there's nothing to do.
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1385 * The caller should not log the write.
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1386 *
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1387 * ENOENT: the block was dbuf_free_range()'d, so there's nothing to do.
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1388 * The caller should not log the write.
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1389 *
2237
45affe88ed99 6416482 filebench oltp workload hangs in zfs
maybee
parents: 2199
diff changeset
1390 * EALREADY: this block is already in the process of being synced.
45affe88ed99 6416482 filebench oltp workload hangs in zfs
maybee
parents: 2199
diff changeset
1391 * The caller should track its progress (somehow).
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1392 *
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1393 * EIO: could not do the I/O.
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1394 * The caller should do a txg_wait_synced().
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1395 *
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1396 * 0: the I/O has been initiated.
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1397 * The caller should log this blkptr in the done callback.
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1398 * It is possible that the I/O will fail, in which case
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1399 * the error will be reported to the done callback and
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1400 * propagated to pio from zio_done().
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1401 */
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1402 int
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1403 dmu_sync(zio_t *pio, uint64_t txg, dmu_sync_cb_t *done, zgd_t *zgd)
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1404 {
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1405 blkptr_t *bp = zgd->zgd_bp;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1406 dmu_buf_impl_t *db = (dmu_buf_impl_t *)zgd->zgd_db;
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10242
diff changeset
1407 objset_t *os = db->db_objset;
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1408 dsl_dataset_t *ds = os->os_dsl_dataset;
3547
e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents: 3444
diff changeset
1409 dbuf_dirty_record_t *dr;
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1410 dmu_sync_arg_t *dsa;
2237
45affe88ed99 6416482 filebench oltp workload hangs in zfs
maybee
parents: 2199
diff changeset
1411 zbookmark_t zb;
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1412 zio_prop_t zp;
12684
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1413 dnode_t *dn;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1414
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1415 ASSERT(pio != NULL);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1416 ASSERT(txg != 0);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1417
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1418 SET_BOOKMARK(&zb, ds->ds_object,
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1419 db->db.db_object, db->db_level, db->db_blkid);
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1420
12684
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1421 DB_DNODE_ENTER(db);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1422 dn = DB_DNODE(db);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1423 dmu_write_policy(os, dn, db->db_level, WP_DMU_SYNC, &zp);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1424 DB_DNODE_EXIT(db);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1425
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1426 /*
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1427 * If we're frozen (running ziltest), we always need to generate a bp.
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
1428 */
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1429 if (txg > spa_freeze_txg(os->os_spa))
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1430 return (dmu_sync_late_arrival(pio, os, done, zgd, &zp, &zb));
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
1431
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
1432 /*
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1433 * Grabbing db_mtx now provides a barrier between dbuf_sync_leaf()
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1434 * and us. If we determine that this txg is not yet syncing,
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1435 * but it begins to sync a moment later, that's OK because the
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1436 * sync thread will block in dbuf_sync_leaf() until we drop db_mtx.
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1437 */
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1438 mutex_enter(&db->db_mtx);
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1439
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1440 if (txg <= spa_last_synced_txg(os->os_spa)) {
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1441 /*
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1442 * This txg has already synced. There's nothing to do.
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1443 */
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1444 mutex_exit(&db->db_mtx);
13980
d7059eb1884c 3598 want to dtrace when errors are generated in zfs
Matthew Ahrens <mahrens@delphix.com>
parents: 13977
diff changeset
1445 return (SET_ERROR(EEXIST));
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1446 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1447
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1448 if (txg <= spa_syncing_txg(os->os_spa)) {
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1449 /*
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1450 * This txg is currently syncing, so we can't mess with
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1451 * the dirty record anymore; just write a new log block.
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1452 */
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1453 mutex_exit(&db->db_mtx);
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1454 return (dmu_sync_late_arrival(pio, os, done, zgd, &zp, &zb));
2237
45affe88ed99 6416482 filebench oltp workload hangs in zfs
maybee
parents: 2199
diff changeset
1455 }
45affe88ed99 6416482 filebench oltp workload hangs in zfs
maybee
parents: 2199
diff changeset
1456
3547
e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents: 3444
diff changeset
1457 dr = db->db_last_dirty;
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1458 while (dr && dr->dr_txg != txg)
3547
e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents: 3444
diff changeset
1459 dr = dr->dr_next;
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1460
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1461 if (dr == NULL) {
2237
45affe88ed99 6416482 filebench oltp workload hangs in zfs
maybee
parents: 2199
diff changeset
1462 /*
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1463 * There's no dr for this dbuf, so it must have been freed.
2237
45affe88ed99 6416482 filebench oltp workload hangs in zfs
maybee
parents: 2199
diff changeset
1464 * There's no need to log writes to freed blocks, so we're done.
45affe88ed99 6416482 filebench oltp workload hangs in zfs
maybee
parents: 2199
diff changeset
1465 */
45affe88ed99 6416482 filebench oltp workload hangs in zfs
maybee
parents: 2199
diff changeset
1466 mutex_exit(&db->db_mtx);
13980
d7059eb1884c 3598 want to dtrace when errors are generated in zfs
Matthew Ahrens <mahrens@delphix.com>
parents: 13977
diff changeset
1467 return (SET_ERROR(ENOENT));
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1468 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1469
13887
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1470 ASSERT(dr->dr_next == NULL || dr->dr_next->dr_txg < txg);
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1471
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1472 /*
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1473 * Assume the on-disk data is X, the current syncing data is Y,
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1474 * and the current in-memory data is Z (currently in dmu_sync).
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1475 * X and Z are identical but Y is has been modified. Normally,
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1476 * when X and Z are the same we will perform a nopwrite but if Y
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1477 * is different we must disable nopwrite since the resulting write
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1478 * of Y to disk can free the block containing X. If we allowed a
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1479 * nopwrite to occur the block pointing to Z would reference a freed
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1480 * block. Since this is a rare case we simplify this by disabling
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1481 * nopwrite if the current dmu_sync-ing dbuf has been modified in
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1482 * a previous transaction.
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1483 */
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1484 if (dr->dr_next)
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1485 zp.zp_nopwrite = B_FALSE;
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1486
3547
e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents: 3444
diff changeset
1487 ASSERT(dr->dr_txg == txg);
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1488 if (dr->dt.dl.dr_override_state == DR_IN_DMU_SYNC ||
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1489 dr->dt.dl.dr_override_state == DR_OVERRIDDEN) {
3547
e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents: 3444
diff changeset
1490 /*
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1491 * We have already issued a sync write for this buffer,
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1492 * or this buffer has already been synced. It could not
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1493 * have been dirtied since, or we would have cleared the state.
3547
e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents: 3444
diff changeset
1494 */
e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents: 3444
diff changeset
1495 mutex_exit(&db->db_mtx);
13980
d7059eb1884c 3598 want to dtrace when errors are generated in zfs
Matthew Ahrens <mahrens@delphix.com>
parents: 13977
diff changeset
1496 return (SET_ERROR(EALREADY));
3547
e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents: 3444
diff changeset
1497 }
e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents: 3444
diff changeset
1498
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1499 ASSERT(dr->dt.dl.dr_override_state == DR_NOT_OVERRIDDEN);
3547
e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism
maybee
parents: 3444
diff changeset
1500 dr->dt.dl.dr_override_state = DR_IN_DMU_SYNC;
2237
45affe88ed99 6416482 filebench oltp workload hangs in zfs
maybee
parents: 2199
diff changeset
1501 mutex_exit(&db->db_mtx);
7754
b80e4842ad54 6754011 SPA 3.0: lock breakup, i/o pipeline refactoring, device failure handling
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 7468
diff changeset
1502
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1503 dsa = kmem_alloc(sizeof (dmu_sync_arg_t), KM_SLEEP);
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1504 dsa->dsa_dr = dr;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1505 dsa->dsa_done = done;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1506 dsa->dsa_zgd = zgd;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1507 dsa->dsa_tx = NULL;
7754
b80e4842ad54 6754011 SPA 3.0: lock breakup, i/o pipeline refactoring, device failure handling
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 7468
diff changeset
1508
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1509 zio_nowait(arc_write(pio, os->os_spa, txg,
14039
6cfd5a5778b9 3137 L2ARC compression
Saso Kiselkov <skiselkov@gmail.com>
parents: 13980
diff changeset
1510 bp, dr->dt.dl.dr_data, DBUF_IS_L2CACHEABLE(db),
14164
dceb17481b99 4045 zfs write throttle & i/o scheduler performance work
Matthew Ahrens <mahrens@delphix.com>
parents: 14159
diff changeset
1511 DBUF_IS_L2COMPRESSIBLE(db), &zp, dmu_sync_ready,
dceb17481b99 4045 zfs write throttle & i/o scheduler performance work
Matthew Ahrens <mahrens@delphix.com>
parents: 14159
diff changeset
1512 NULL, dmu_sync_done, dsa, ZIO_PRIORITY_SYNC_WRITE,
dceb17481b99 4045 zfs write throttle & i/o scheduler performance work
Matthew Ahrens <mahrens@delphix.com>
parents: 14159
diff changeset
1513 ZIO_FLAG_CANFAIL, &zb));
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1514
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1515 return (0);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1516 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1517
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1518 int
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1519 dmu_object_set_blocksize(objset_t *os, uint64_t object, uint64_t size, int ibs,
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1520 dmu_tx_t *tx)
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1521 {
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
1522 dnode_t *dn;
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
1523 int err;
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
1524
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10242
diff changeset
1525 err = dnode_hold(os, object, FTAG, &dn);
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
1526 if (err)
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
1527 return (err);
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
1528 err = dnode_set_blksz(dn, size, ibs, tx);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1529 dnode_rele(dn, FTAG);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1530 return (err);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1531 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1532
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1533 void
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1534 dmu_object_set_checksum(objset_t *os, uint64_t object, uint8_t checksum,
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1535 dmu_tx_t *tx)
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1536 {
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
1537 dnode_t *dn;
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
1538
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
1539 /* XXX assumes dnode_hold will not get an i/o error */
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10242
diff changeset
1540 (void) dnode_hold(os, object, FTAG, &dn);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1541 ASSERT(checksum < ZIO_CHECKSUM_FUNCTIONS);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1542 dn->dn_checksum = checksum;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1543 dnode_setdirty(dn, tx);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1544 dnode_rele(dn, FTAG);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1545 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1546
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1547 void
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1548 dmu_object_set_compress(objset_t *os, uint64_t object, uint8_t compress,
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1549 dmu_tx_t *tx)
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1550 {
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
1551 dnode_t *dn;
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
1552
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
1553 /* XXX assumes dnode_hold will not get an i/o error */
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10242
diff changeset
1554 (void) dnode_hold(os, object, FTAG, &dn);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1555 ASSERT(compress < ZIO_COMPRESS_FUNCTIONS);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1556 dn->dn_compress = compress;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1557 dnode_setdirty(dn, tx);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1558 dnode_rele(dn, FTAG);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1559 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1560
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1561 int zfs_mdcomp_disable = 0;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1562
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1563 void
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1564 dmu_write_policy(objset_t *os, dnode_t *dn, int level, int wp, zio_prop_t *zp)
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1565 {
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1566 dmu_object_type_t type = dn ? dn->dn_type : DMU_OT_OBJSET;
13700
2889e2596bd6 2619 asynchronous destruction of ZFS file systems
Christopher Siden <chris.siden@delphix.com>
parents: 12684
diff changeset
1567 boolean_t ismd = (level > 0 || DMU_OT_IS_METADATA(type) ||
12493
89ce40422cea 6952177 SA handling of on-disk corruption can be improved
Mark Shellenbaum <Mark.Shellenbaum@Oracle.COM>
parents: 12470
diff changeset
1568 (wp & WP_SPILL));
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1569 enum zio_checksum checksum = os->os_checksum;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1570 enum zio_compress compress = os->os_compress;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1571 enum zio_checksum dedup_checksum = os->os_dedup_checksum;
13888
7204b3392a58 3236 zio nop-write (fix uninitialized variables)
George Wilson <george.wilson@delphix.com>
parents: 13887
diff changeset
1572 boolean_t dedup = B_FALSE;
7204b3392a58 3236 zio nop-write (fix uninitialized variables)
George Wilson <george.wilson@delphix.com>
parents: 13887
diff changeset
1573 boolean_t nopwrite = B_FALSE;
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1574 boolean_t dedup_verify = os->os_dedup_verify;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1575 int copies = os->os_copies;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1576
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1577 /*
13887
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1578 * We maintain different write policies for each of the following
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1579 * types of data:
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1580 * 1. metadata
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1581 * 2. preallocated blocks (i.e. level-0 blocks of a dump device)
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1582 * 3. all other level 0 blocks
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1583 */
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1584 if (ismd) {
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1585 /*
13887
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1586 * XXX -- we should design a compression algorithm
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1587 * that specializes in arrays of bps.
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1588 */
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1589 compress = zfs_mdcomp_disable ? ZIO_COMPRESS_EMPTY :
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1590 ZIO_COMPRESS_LZJB;
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1591
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1592 /*
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1593 * Metadata always gets checksummed. If the data
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1594 * checksum is multi-bit correctable, and it's not a
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1595 * ZBT-style checksum, then it's suitable for metadata
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1596 * as well. Otherwise, the metadata checksum defaults
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1597 * to fletcher4.
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1598 */
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1599 if (zio_checksum_table[checksum].ci_correctable < 1 ||
11670
1d964fb5d948 6595532 ZIL is too talkative
Neil Perrin <Neil.Perrin@Sun.COM>
parents: 11539
diff changeset
1600 zio_checksum_table[checksum].ci_eck)
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1601 checksum = ZIO_CHECKSUM_FLETCHER_4;
13887
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1602 } else if (wp & WP_NOFILL) {
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1603 ASSERT(level == 0);
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1604
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1605 /*
13887
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1606 * If we're writing preallocated blocks, we aren't actually
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1607 * writing them so don't set any policy properties. These
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1608 * blocks are currently only used by an external subsystem
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1609 * outside of zfs (i.e. dump) and not written by the zio
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1610 * pipeline.
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1611 */
13887
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1612 compress = ZIO_COMPRESS_OFF;
14159
dc75c925d8aa 2932 support crash dumps to raidz, etc. pools
Bill Pijewski <wdp@joyent.com>
parents: 14151
diff changeset
1613 checksum = ZIO_CHECKSUM_NOPARITY;
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1614 } else {
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1615 compress = zio_compress_select(dn->dn_compress, compress);
13887
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1616
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1617 checksum = (dedup_checksum == ZIO_CHECKSUM_OFF) ?
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1618 zio_checksum_select(dn->dn_checksum, checksum) :
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1619 dedup_checksum;
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1620
13887
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1621 /*
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1622 * Determine dedup setting. If we are in dmu_sync(),
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1623 * we won't actually dedup now because that's all
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1624 * done in syncing context; but we do want to use the
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1625 * dedup checkum. If the checksum is not strong
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1626 * enough to ensure unique signatures, force
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1627 * dedup_verify.
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1628 */
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1629 if (dedup_checksum != ZIO_CHECKSUM_OFF) {
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1630 dedup = (wp & WP_DMU_SYNC) ? B_FALSE : B_TRUE;
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1631 if (!zio_checksum_table[checksum].ci_dedup)
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1632 dedup_verify = B_TRUE;
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1633 }
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1634
13887
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1635 /*
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1636 * Enable nopwrite if we have a cryptographically secure
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1637 * checksum that has no known collisions (i.e. SHA-256)
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1638 * and compression is enabled. We don't enable nopwrite if
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1639 * dedup is enabled as the two features are mutually exclusive.
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1640 */
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1641 nopwrite = (!dedup && zio_checksum_table[checksum].ci_dedup &&
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1642 compress != ZIO_COMPRESS_OFF && zfs_nopwrite_enabled);
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1643 }
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1644
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1645 zp->zp_checksum = checksum;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1646 zp->zp_compress = compress;
11935
538c866aaac6 6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents: 11670
diff changeset
1647 zp->zp_type = (wp & WP_SPILL) ? dn->dn_bonustype : type;
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1648 zp->zp_level = level;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1649 zp->zp_copies = MIN(copies + ismd, spa_max_replication(os->os_spa));
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1650 zp->zp_dedup = dedup;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1651 zp->zp_dedup_verify = dedup && dedup_verify;
13887
196932ec9e6a 3236 zio nop-write
George Wilson <george.wilson@delphix.com>
parents: 13776
diff changeset
1652 zp->zp_nopwrite = nopwrite;
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1653 }
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1654
1775
e51e26b432c0 6410698 ZFS metadata needs to be more highly replicated (ditto blocks)
billm
parents: 1731
diff changeset
1655 int
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1656 dmu_offset_next(objset_t *os, uint64_t object, boolean_t hole, uint64_t *off)
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1657 {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1658 dnode_t *dn;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1659 int i, err;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1660
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10242
diff changeset
1661 err = dnode_hold(os, object, FTAG, &dn);
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
1662 if (err)
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
1663 return (err);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1664 /*
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1665 * Sync any current changes before
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1666 * we go trundling through the block pointers.
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1667 */
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1668 for (i = 0; i < TXG_SIZE; i++) {
1596
2e2377ccbf85 6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr
ahrens
parents: 1544
diff changeset
1669 if (list_link_active(&dn->dn_dirty_link[i]))
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1670 break;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1671 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1672 if (i != TXG_SIZE) {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1673 dnode_rele(dn, FTAG);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1674 txg_wait_synced(dmu_objset_pool(os), 0);
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10242
diff changeset
1675 err = dnode_hold(os, object, FTAG, &dn);
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
1676 if (err)
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
1677 return (err);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1678 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1679
6992
20c04e18c58c 6573681 deleting a very large file can be slow
maybee
parents: 5450
diff changeset
1680 err = dnode_next_offset(dn, (hole ? DNODE_FIND_HOLE : 0), off, 1, 1, 0);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1681 dnode_rele(dn, FTAG);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1682
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1683 return (err);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1684 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1685
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1686 void
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1687 dmu_object_info_from_dnode(dnode_t *dn, dmu_object_info_t *doi)
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1688 {
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1689 dnode_phys_t *dnp;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1690
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1691 rw_enter(&dn->dn_struct_rwlock, RW_READER);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1692 mutex_enter(&dn->dn_mtx);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1693
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1694 dnp = dn->dn_phys;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1695
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1696 doi->doi_data_block_size = dn->dn_datablksz;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1697 doi->doi_metadata_block_size = dn->dn_indblkshift ?
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1698 1ULL << dn->dn_indblkshift : 0;
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1699 doi->doi_type = dn->dn_type;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1700 doi->doi_bonus_type = dn->dn_bonustype;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1701 doi->doi_bonus_size = dn->dn_bonuslen;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1702 doi->doi_indirection = dn->dn_nlevels;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1703 doi->doi_checksum = dn->dn_checksum;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1704 doi->doi_compress = dn->dn_compress;
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1705 doi->doi_physical_blocks_512 = (DN_USED_BYTES(dnp) + 256) >> 9;
13977
af7f2603d4d7 3603 panic from bpobj_enqueue_subobj()
Matthew Ahrens <mahrens@delphix.com>
parents: 13973
diff changeset
1706 doi->doi_max_offset = (dn->dn_maxblkid + 1) * dn->dn_datablksz;
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1707 doi->doi_fill_count = 0;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1708 for (int i = 0; i < dnp->dn_nblkptr; i++)
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10810
diff changeset
1709 doi->doi_fill_count += dnp->dn_blkptr[i].blk_fill;
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1710
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1711 mutex_exit(&dn->dn_mtx);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1712 rw_exit(&dn->dn_struct_rwlock);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1713 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1714
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1715 /*
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1716 * Get information on a DMU object.
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1717 * If doi is NULL, just indicates whether the object exists.
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1718 */
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1719 int
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1720 dmu_object_info(objset_t *os, uint64_t object, dmu_object_info_t *doi)
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1721 {
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
1722 dnode_t *dn;
10298
a0d52501437c 6860996 %temporary clones are not automatically destroyed on error
Matthew Ahrens <Matthew.Ahrens@Sun.COM>
parents: 10242
diff changeset
1723 int err = dnode_hold(os, object, FTAG, &dn);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1724
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
1725 if (err)
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
1726 return (err);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1727
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1728 if (doi != NULL)
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1729 dmu_object_info_from_dnode(dn, doi);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1730
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1731 dnode_rele(dn, FTAG);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1732 return (0);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1733 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1734
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1735 /*
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1736 * As above, but faster; can be used when you have a held dbuf in hand.
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1737 */
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1738 void
12684
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1739 dmu_object_info_from_db(dmu_buf_t *db_fake, dmu_object_info_t *doi)
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1740 {
12684
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1741 dmu_buf_impl_t *db = (dmu_buf_impl_t *)db_fake;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1742
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1743 DB_DNODE_ENTER(db);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1744 dmu_object_info_from_dnode(DB_DNODE(db), doi);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1745 DB_DNODE_EXIT(db);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1746 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1747
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1748 /*
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1749 * Faster still when you only care about the size.
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1750 * This is specifically optimized for zfs_getattr().
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1751 */
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1752 void
12684
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1753 dmu_object_size_from_db(dmu_buf_t *db_fake, uint32_t *blksize,
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1754 u_longlong_t *nblk512)
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1755 {
12684
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1756 dmu_buf_impl_t *db = (dmu_buf_impl_t *)db_fake;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1757 dnode_t *dn;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1758
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1759 DB_DNODE_ENTER(db);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1760 dn = DB_DNODE(db);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1761
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1762 *blksize = dn->dn_datablksz;
2082
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1775
diff changeset
1763 /* add 1 for dnode space */
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1775
diff changeset
1764 *nblk512 = ((DN_USED_BYTES(dn->dn_phys) + SPA_MINBLOCKSIZE/2) >>
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares
eschrock
parents: 1775
diff changeset
1765 SPA_MINBLOCKSHIFT) + 1;
12684
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1766 DB_DNODE_EXIT(db);
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1767 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1768
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1769 void
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1770 byteswap_uint64_array(void *vbuf, size_t size)
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1771 {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1772 uint64_t *buf = vbuf;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1773 size_t count = size >> 3;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1774 int i;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1775
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1776 ASSERT((size & 7) == 0);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1777
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1778 for (i = 0; i < count; i++)
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1779 buf[i] = BSWAP_64(buf[i]);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1780 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1781
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1782 void
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1783 byteswap_uint32_array(void *vbuf, size_t size)
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1784 {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1785 uint32_t *buf = vbuf;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1786 size_t count = size >> 2;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1787 int i;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1788
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1789 ASSERT((size & 3) == 0);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1790
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1791 for (i = 0; i < count; i++)
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1792 buf[i] = BSWAP_32(buf[i]);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1793 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1794
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1795 void
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1796 byteswap_uint16_array(void *vbuf, size_t size)
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1797 {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1798 uint16_t *buf = vbuf;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1799 size_t count = size >> 1;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1800 int i;
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1801
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1802 ASSERT((size & 1) == 0);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1803
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1804 for (i = 0; i < count; i++)
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1805 buf[i] = BSWAP_16(buf[i]);
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1806 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1807
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1808 /* ARGSUSED */
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1809 void
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1810 byteswap_uint8_array(void *vbuf, size_t size)
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1811 {
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1812 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1813
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1814 void
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1815 dmu_init(void)
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1816 {
12296
7cf402a7f374 6675946 'zpool status' should show the progress of resilvering for individual disk.
Lin Ling <Lin.Ling@Sun.COM>
parents: 12285
diff changeset
1817 zfs_dbgmsg_init();
12684
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1818 sa_cache_init();
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1819 xuio_stat_init();
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1820 dmu_objset_init();
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1821 dnode_init();
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1822 dbuf_init();
10474
0e96dd3b905a 6859997 zfs caching performance problem
Rich Morris <Richard.Morris@Sun.COM>
parents: 10298
diff changeset
1823 zfetch_init();
13776
cd512c80fd75 3086 unnecessarily setting DS_FLAG_INCONSISTENT on async destroyed datasets
Matthew Ahrens <mahrens@delphix.com>
parents: 13700
diff changeset
1824 l2arc_init();
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1825 arc_init();
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1826 }
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1827
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1828 void
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1829 dmu_fini(void)
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1830 {
14045
9475b3fef59d 3741 zfs needs better comments
Will Andrews <will@firepipe.net>
parents: 14039
diff changeset
1831 arc_fini(); /* arc depends on l2arc, so arc must go first */
12684
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1832 l2arc_fini();
10474
0e96dd3b905a 6859997 zfs caching performance problem
Rich Morris <Richard.Morris@Sun.COM>
parents: 10298
diff changeset
1833 zfetch_fini();
12684
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1834 dbuf_fini();
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1835 dnode_fini();
12684
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation
Tom Erickson <Tom.Erickson@Sun.COM>
parents: 12493
diff changeset
1836 dmu_objset_fini();
11539
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules
chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM>
parents: 10922
diff changeset
1837 xuio_stat_fini();
11935
538c866aaac6 6716117 ZFS needs native system attribute infrastructure
Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
parents: 11670
diff changeset
1838 sa_cache_fini();
12296
7cf402a7f374 6675946 'zpool status' should show the progress of resilvering for individual disk.
Lin Ling <Lin.Ling@Sun.COM>
parents: 12285
diff changeset
1839 zfs_dbgmsg_fini();
789
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
1840 }