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annotate usr/src/uts/common/fs/zfs/sys/arc.h @ 25465:2c417db70a87

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3525 Persistent L2ARC Portions contributed by: Saso Kiselkov <skiselkov@gmail.com> Portions contributed by: Jorgen Lundman <lundman@lundman.net> Portions contributed by: Brian Behlendorf <behlendorf1@llnl.gov> Portions contributed by: Alexander Motin <mav@FreeBSD.org> Portions contributed by: Jason King <jason.king@joyent.com> Reviewed by: C Fraire <cfraire@me.com> Reviewed by: Toomas Soome <tsoome@me.com> Approved by: Dan McDonald <danmcd@joyent.com>
author George Amanakis <gamanakis@gmail.com>
date Thu, 30 Jul 2020 18:40:44 -0500
parents 78bc68a60a91
children 6e6fa6693b95
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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) 2012, 2017 by Delphix. All rights reserved.
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24 * Copyright (c) 2013 by Saso Kiselkov. All rights reserved.
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25 */
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26
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27 #ifndef _SYS_ARC_H
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28 #define _SYS_ARC_H
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29
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30 #include <sys/zfs_context.h>
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31
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32 #ifdef __cplusplus
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33 extern "C" {
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34 #endif
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35
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36 #include <sys/zio.h>
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37 #include <sys/dmu.h>
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38 #include <sys/spa.h>
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39
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40 /*
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41 * Used by arc_flush() to inform arc_evict_state() that it should evict
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42 * all available buffers from the arc state being passed in.
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43 */
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44 #define ARC_EVICT_ALL -1ULL
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45
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46 #define HDR_SET_LSIZE(hdr, x) do { \
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47 ASSERT(IS_P2ALIGNED(x, 1U << SPA_MINBLOCKSHIFT)); \
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48 (hdr)->b_lsize = ((x) >> SPA_MINBLOCKSHIFT); \
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49 _NOTE(CONSTCOND) } while (0)
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50
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51 #define HDR_SET_PSIZE(hdr, x) do { \
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52 ASSERT(IS_P2ALIGNED((x), 1U << SPA_MINBLOCKSHIFT)); \
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53 (hdr)->b_psize = ((x) >> SPA_MINBLOCKSHIFT); \
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54 _NOTE(CONSTCOND) } while (0)
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55
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56 #define HDR_GET_LSIZE(hdr) ((hdr)->b_lsize << SPA_MINBLOCKSHIFT)
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57 #define HDR_GET_PSIZE(hdr) ((hdr)->b_psize << SPA_MINBLOCKSHIFT)
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58
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59 typedef struct arc_buf_hdr arc_buf_hdr_t;
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60 typedef struct arc_buf arc_buf_t;
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61
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62 /*
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63 * Because the ARC can store encrypted data, errors (not due to bugs) may arise
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64 * while transforming data into its desired format - specifically, when
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65 * decrypting, the key may not be present, or the HMAC may not be correct
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66 * which signifies deliberate tampering with the on-disk state
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67 * (assuming that the checksum was correct). The "error" parameter will be
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68 * nonzero in this case, even if there is no associated zio.
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69 */
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70 typedef void arc_read_done_func_t(zio_t *zio, const zbookmark_phys_t *zb,
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71 const blkptr_t *bp, arc_buf_t *buf, void *priv);
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72 typedef void arc_write_done_func_t(zio_t *zio, arc_buf_t *buf, void *priv);
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73
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74 /* generic arc_done_func_t's which you can use */
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75 arc_read_done_func_t arc_bcopy_func;
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76 arc_read_done_func_t arc_getbuf_func;
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77
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78 typedef enum arc_flags
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79 {
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80 /*
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81 * Public flags that can be passed into the ARC by external consumers.
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82 */
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83 ARC_FLAG_WAIT = 1 << 0, /* perform sync I/O */
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84 ARC_FLAG_NOWAIT = 1 << 1, /* perform async I/O */
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85 ARC_FLAG_PREFETCH = 1 << 2, /* I/O is a prefetch */
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86 ARC_FLAG_CACHED = 1 << 3, /* I/O was in cache */
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87 ARC_FLAG_L2CACHE = 1 << 4, /* cache in L2ARC */
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88 ARC_FLAG_PREDICTIVE_PREFETCH = 1 << 5, /* I/O from zfetch */
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89 ARC_FLAG_PRESCIENT_PREFETCH = 1 << 6, /* long min lifespan */
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90
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91 /*
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92 * Private ARC flags. These flags are private ARC only flags that
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93 * will show up in b_flags in the arc_hdr_buf_t. These flags should
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94 * only be set by ARC code.
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95 */
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96 ARC_FLAG_IN_HASH_TABLE = 1 << 7, /* buffer is hashed */
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97 ARC_FLAG_IO_IN_PROGRESS = 1 << 8, /* I/O in progress */
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98 ARC_FLAG_IO_ERROR = 1 << 9, /* I/O failed for buf */
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99 ARC_FLAG_INDIRECT = 1 << 10, /* indirect block */
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100 /* Indicates that block was read with ASYNC priority. */
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101 ARC_FLAG_PRIO_ASYNC_READ = 1 << 11,
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102 ARC_FLAG_L2_WRITING = 1 << 12, /* write in progress */
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103 ARC_FLAG_L2_EVICTED = 1 << 13, /* evicted during I/O */
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104 ARC_FLAG_L2_WRITE_HEAD = 1 << 14, /* head of write list */
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105 /*
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106 * Encrypted or authenticated on disk (may be plaintext in memory).
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107 * This header has b_crypt_hdr allocated. Does not include indirect
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108 * blocks with checksums of MACs which will also have their X
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109 * (encrypted) bit set in the bp.
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110 */
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111 ARC_FLAG_PROTECTED = 1 << 15,
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112 /* data has not been authenticated yet */
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113 ARC_FLAG_NOAUTH = 1 << 16,
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114 /* indicates that the buffer contains metadata (otherwise, data) */
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115 ARC_FLAG_BUFC_METADATA = 1 << 17,
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116
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117 /* Flags specifying whether optional hdr struct fields are defined */
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118 ARC_FLAG_HAS_L1HDR = 1 << 18,
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119 ARC_FLAG_HAS_L2HDR = 1 << 19,
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120
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121 /*
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122 * Indicates the arc_buf_hdr_t's b_pdata matches the on-disk data.
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123 * This allows the l2arc to use the blkptr's checksum to verify
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124 * the data without having to store the checksum in the hdr.
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125 */
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126 ARC_FLAG_COMPRESSED_ARC = 1 << 20,
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127 ARC_FLAG_SHARED_DATA = 1 << 21,
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128
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129 /*
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130 * The arc buffer's compression mode is stored in the top 7 bits of the
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131 * flags field, so these dummy flags are included so that MDB can
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132 * interpret the enum properly.
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133 */
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134 ARC_FLAG_COMPRESS_0 = 1 << 24,
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135 ARC_FLAG_COMPRESS_1 = 1 << 25,
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136 ARC_FLAG_COMPRESS_2 = 1 << 26,
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137 ARC_FLAG_COMPRESS_3 = 1 << 27,
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138 ARC_FLAG_COMPRESS_4 = 1 << 28,
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139 ARC_FLAG_COMPRESS_5 = 1 << 29,
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140 ARC_FLAG_COMPRESS_6 = 1 << 30
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George Wilson <george.wilson@delphix.com>
parents: 15660
diff changeset
141
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George Wilson <george.wilson@delphix.com>
parents: 14730
diff changeset
142 } arc_flags_t;
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George Wilson <george.wilson@delphix.com>
parents: 14730
diff changeset
143
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diff changeset
144 typedef enum arc_buf_flags {
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parents: 15747
diff changeset
145 ARC_BUF_FLAG_SHARED = 1 << 0,
23516
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parents: 23204
diff changeset
146 ARC_BUF_FLAG_COMPRESSED = 1 << 1,
cdac48beb362 8727 Native data and metadata encryption for zfs
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parents: 23204
diff changeset
147 /*
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parents: 23204
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148 * indicates whether this arc_buf_t is encrypted, regardless of
cdac48beb362 8727 Native data and metadata encryption for zfs
Tom Caputi <tcaputi@datto.com>
parents: 23204
diff changeset
149 * state on-disk
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Tom Caputi <tcaputi@datto.com>
parents: 23204
diff changeset
150 */
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parents: 23204
diff changeset
151 ARC_BUF_FLAG_ENCRYPTED = 1 << 2
16020
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diff changeset
152 } arc_buf_flags_t;
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parents: 15747
diff changeset
153
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parents:
diff changeset
154 struct arc_buf {
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parents:
diff changeset
155 arc_buf_hdr_t *b_hdr;
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parents:
diff changeset
156 arc_buf_t *b_next;
12296
7cf402a7f374 6675946 'zpool status' should show the progress of resilvering for individual disk.
Lin Ling <Lin.Ling@Sun.COM>
parents: 11539
diff changeset
157 kmutex_t b_evict_lock;
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diff changeset
158 void *b_data;
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parents: 15747
diff changeset
159 arc_buf_flags_t b_flags;
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160 };
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parents:
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161
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johansen
parents: 3093
diff changeset
162 typedef enum arc_buf_contents {
15747
506e78b5eb98 6950 ARC should cache compressed data
George Wilson <george.wilson@delphix.com>
parents: 15660
diff changeset
163 ARC_BUFC_INVALID, /* invalid type */
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johansen
parents: 3093
diff changeset
164 ARC_BUFC_DATA, /* buffer contains data */
4309
3dfde0f4662d 6542676 ARC needs to track meta-data memory overhead
maybee
parents: 3547
diff changeset
165 ARC_BUFC_METADATA, /* buffer contains metadata */
3dfde0f4662d 6542676 ARC needs to track meta-data memory overhead
maybee
parents: 3547
diff changeset
166 ARC_BUFC_NUMTYPES
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johansen
parents: 3093
diff changeset
167 } arc_buf_contents_t;
789
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parents:
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168
8582
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Brendan Gregg - Sun Microsystems <Brendan.Gregg@Sun.COM>
parents: 7872
diff changeset
169 /*
df9361868dbe 6748019 ARC/L2ARC metadata accounting for arc_size
Brendan Gregg - Sun Microsystems <Brendan.Gregg@Sun.COM>
parents: 7872
diff changeset
170 * The following breakdows of arc_size exist for kstat only.
df9361868dbe 6748019 ARC/L2ARC metadata accounting for arc_size
Brendan Gregg - Sun Microsystems <Brendan.Gregg@Sun.COM>
parents: 7872
diff changeset
171 */
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Brendan Gregg - Sun Microsystems <Brendan.Gregg@Sun.COM>
parents: 7872
diff changeset
172 typedef enum arc_space_type {
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Brendan Gregg - Sun Microsystems <Brendan.Gregg@Sun.COM>
parents: 7872
diff changeset
173 ARC_SPACE_DATA,
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d416ccc025f2 5445 Add more visibility via arcstats; specifically arc_state_t stats and differentiate between "data" and "metadata"
Prakash Surya <prakash.surya@delphix.com>
parents: 14836
diff changeset
174 ARC_SPACE_META,
8582
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parents: 7872
diff changeset
175 ARC_SPACE_HDRS,
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parents: 7872
diff changeset
176 ARC_SPACE_L2HDRS,
df9361868dbe 6748019 ARC/L2ARC metadata accounting for arc_size
Brendan Gregg - Sun Microsystems <Brendan.Gregg@Sun.COM>
parents: 7872
diff changeset
177 ARC_SPACE_OTHER,
22621
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Toomas Soome <tsoome@me.com>
parents: 17451
diff changeset
178 ARC_SPACE_BONUS,
8582
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parents: 7872
diff changeset
179 ARC_SPACE_NUMTYPES
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Brendan Gregg - Sun Microsystems <Brendan.Gregg@Sun.COM>
parents: 7872
diff changeset
180 } arc_space_type_t;
df9361868dbe 6748019 ARC/L2ARC metadata accounting for arc_size
Brendan Gregg - Sun Microsystems <Brendan.Gregg@Sun.COM>
parents: 7872
diff changeset
181
df9361868dbe 6748019 ARC/L2ARC metadata accounting for arc_size
Brendan Gregg - Sun Microsystems <Brendan.Gregg@Sun.COM>
parents: 7872
diff changeset
182 void arc_space_consume(uint64_t space, arc_space_type_t type);
df9361868dbe 6748019 ARC/L2ARC metadata accounting for arc_size
Brendan Gregg - Sun Microsystems <Brendan.Gregg@Sun.COM>
parents: 7872
diff changeset
183 void arc_space_return(uint64_t space, arc_space_type_t type);
16020
447c4863905f 7252 compressed zfs send / receive
Dan Kimmel <dan.kimmel@delphix.com>
parents: 15747
diff changeset
184 boolean_t arc_is_metadata(arc_buf_t *buf);
23516
cdac48beb362 8727 Native data and metadata encryption for zfs
Tom Caputi <tcaputi@datto.com>
parents: 23204
diff changeset
185 boolean_t arc_is_encrypted(arc_buf_t *buf);
cdac48beb362 8727 Native data and metadata encryption for zfs
Tom Caputi <tcaputi@datto.com>
parents: 23204
diff changeset
186 boolean_t arc_is_unauthenticated(arc_buf_t *buf);
16020
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Dan Kimmel <dan.kimmel@delphix.com>
parents: 15747
diff changeset
187 enum zio_compress arc_get_compression(arc_buf_t *buf);
23516
cdac48beb362 8727 Native data and metadata encryption for zfs
Tom Caputi <tcaputi@datto.com>
parents: 23204
diff changeset
188 void arc_get_raw_params(arc_buf_t *buf, boolean_t *byteorder, uint8_t *salt,
cdac48beb362 8727 Native data and metadata encryption for zfs
Tom Caputi <tcaputi@datto.com>
parents: 23204
diff changeset
189 uint8_t *iv, uint8_t *mac);
cdac48beb362 8727 Native data and metadata encryption for zfs
Tom Caputi <tcaputi@datto.com>
parents: 23204
diff changeset
190 int arc_untransform(arc_buf_t *buf, spa_t *spa, const zbookmark_phys_t *zb,
cdac48beb362 8727 Native data and metadata encryption for zfs
Tom Caputi <tcaputi@datto.com>
parents: 23204
diff changeset
191 boolean_t in_place);
cdac48beb362 8727 Native data and metadata encryption for zfs
Tom Caputi <tcaputi@datto.com>
parents: 23204
diff changeset
192 void arc_convert_to_raw(arc_buf_t *buf, uint64_t dsobj, boolean_t byteorder,
cdac48beb362 8727 Native data and metadata encryption for zfs
Tom Caputi <tcaputi@datto.com>
parents: 23204
diff changeset
193 dmu_object_type_t ot, const uint8_t *salt, const uint8_t *iv,
cdac48beb362 8727 Native data and metadata encryption for zfs
Tom Caputi <tcaputi@datto.com>
parents: 23204
diff changeset
194 const uint8_t *mac);
16020
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Dan Kimmel <dan.kimmel@delphix.com>
parents: 15747
diff changeset
195 arc_buf_t *arc_alloc_buf(spa_t *spa, void *tag, arc_buf_contents_t type,
447c4863905f 7252 compressed zfs send / receive
Dan Kimmel <dan.kimmel@delphix.com>
parents: 15747
diff changeset
196 int32_t size);
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Dan Kimmel <dan.kimmel@delphix.com>
parents: 15747
diff changeset
197 arc_buf_t *arc_alloc_compressed_buf(spa_t *spa, void *tag,
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Dan Kimmel <dan.kimmel@delphix.com>
parents: 15747
diff changeset
198 uint64_t psize, uint64_t lsize, enum zio_compress compression_type);
23516
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parents: 23204
diff changeset
199 arc_buf_t *arc_alloc_raw_buf(spa_t *spa, void *tag, uint64_t dsobj,
cdac48beb362 8727 Native data and metadata encryption for zfs
Tom Caputi <tcaputi@datto.com>
parents: 23204
diff changeset
200 boolean_t byteorder, const uint8_t *salt, const uint8_t *iv,
cdac48beb362 8727 Native data and metadata encryption for zfs
Tom Caputi <tcaputi@datto.com>
parents: 23204
diff changeset
201 const uint8_t *mac, dmu_object_type_t ot, uint64_t psize, uint64_t lsize,
cdac48beb362 8727 Native data and metadata encryption for zfs
Tom Caputi <tcaputi@datto.com>
parents: 23204
diff changeset
202 enum zio_compress compression_type);
16020
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Dan Kimmel <dan.kimmel@delphix.com>
parents: 15747
diff changeset
203 arc_buf_t *arc_loan_buf(spa_t *spa, boolean_t is_metadata, int size);
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Dan Kimmel <dan.kimmel@delphix.com>
parents: 15747
diff changeset
204 arc_buf_t *arc_loan_compressed_buf(spa_t *spa, uint64_t psize, uint64_t lsize,
447c4863905f 7252 compressed zfs send / receive
Dan Kimmel <dan.kimmel@delphix.com>
parents: 15747
diff changeset
205 enum zio_compress compression_type);
23516
cdac48beb362 8727 Native data and metadata encryption for zfs
Tom Caputi <tcaputi@datto.com>
parents: 23204
diff changeset
206 arc_buf_t *arc_loan_raw_buf(spa_t *spa, uint64_t dsobj, boolean_t byteorder,
cdac48beb362 8727 Native data and metadata encryption for zfs
Tom Caputi <tcaputi@datto.com>
parents: 23204
diff changeset
207 const uint8_t *salt, const uint8_t *iv, const uint8_t *mac,
cdac48beb362 8727 Native data and metadata encryption for zfs
Tom Caputi <tcaputi@datto.com>
parents: 23204
diff changeset
208 dmu_object_type_t ot, uint64_t psize, uint64_t lsize,
cdac48beb362 8727 Native data and metadata encryption for zfs
Tom Caputi <tcaputi@datto.com>
parents: 23204
diff changeset
209 enum zio_compress compression_type);
9412
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support
Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM>
parents: 8582
diff changeset
210 void arc_return_buf(arc_buf_t *buf, void *tag);
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
211 void arc_loan_inuse_buf(arc_buf_t *buf, void *tag);
15747
506e78b5eb98 6950 ARC should cache compressed data
George Wilson <george.wilson@delphix.com>
parents: 15660
diff changeset
212 void arc_buf_destroy(arc_buf_t *buf, void *tag);
789
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diff changeset
213 int arc_buf_size(arc_buf_t *buf);
16020
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parents: 15747
diff changeset
214 int arc_buf_lsize(arc_buf_t *buf);
22782
425b32187655 9433 Fix ARC hit rate
Alexander Motin <mav@FreeBSD.org>
parents: 22621
diff changeset
215 void arc_buf_access(arc_buf_t *buf);
789
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diff changeset
216 void arc_release(arc_buf_t *buf, void *tag);
b348f31ed315 PSARC 2002/240 ZFS
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parents:
diff changeset
217 int arc_released(arc_buf_t *buf);
3093
71525e4187d5 6490569 verify arc bufs are not modified when they shouldn't be
ahrens
parents: 2391
diff changeset
218 void arc_buf_freeze(arc_buf_t *buf);
71525e4187d5 6490569 verify arc bufs are not modified when they shouldn't be
ahrens
parents: 2391
diff changeset
219 void arc_buf_thaw(arc_buf_t *buf);
1544
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
220 #ifdef ZFS_DEBUG
938876158511 PSARC 2006/077 zpool clear
eschrock
parents: 789
diff changeset
221 int arc_referenced(arc_buf_t *buf);
938876158511 PSARC 2006/077 zpool clear
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parents: 789
diff changeset
222 #endif
789
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diff changeset
223
13941
d48547176ab4 3498 panic in arc_read(): !refcount_is_zero(&pbuf->b_hdr->b_refcnt)
George Wilson <george.wilson@delphix.com>
parents: 13840
diff changeset
224 int arc_read(zio_t *pio, spa_t *spa, const blkptr_t *bp,
23204
07339330e819 10405 Implement ZFS sorted scans
Toomas Soome <tsoome@me.com>
parents: 22782
diff changeset
225 arc_read_done_func_t *done, void *private, zio_priority_t priority,
07339330e819 10405 Implement ZFS sorted scans
Toomas Soome <tsoome@me.com>
parents: 22782
diff changeset
226 int flags, arc_flags_t *arc_flags, const zbookmark_phys_t *zb);
10922
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 10407
diff changeset
227 zio_t *arc_write(zio_t *pio, spa_t *spa, uint64_t txg,
15747
506e78b5eb98 6950 ARC should cache compressed data
George Wilson <george.wilson@delphix.com>
parents: 15660
diff changeset
228 blkptr_t *bp, arc_buf_t *buf, boolean_t l2arc, const zio_prop_t *zp,
23204
07339330e819 10405 Implement ZFS sorted scans
Toomas Soome <tsoome@me.com>
parents: 22782
diff changeset
229 arc_write_done_func_t *ready, arc_write_done_func_t *child_ready,
07339330e819 10405 Implement ZFS sorted scans
Toomas Soome <tsoome@me.com>
parents: 22782
diff changeset
230 arc_write_done_func_t *physdone, arc_write_done_func_t *done,
15660
a531c3f627f8 6513 partially filled holes lose birth time
Paul Dagnelie <pcd@delphix.com>
parents: 15201
diff changeset
231 void *private, zio_priority_t priority, int zio_flags,
a531c3f627f8 6513 partially filled holes lose birth time
Paul Dagnelie <pcd@delphix.com>
parents: 15201
diff changeset
232 const zbookmark_phys_t *zb);
14041
cb4a51285eeb 3805 arc shouldn't cache freed blocks
Matthew Ahrens <mahrens@delphix.com>
parents: 14039
diff changeset
233 void arc_freed(spa_t *spa, const blkptr_t *bp);
789
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diff changeset
234
14849
be29a9ce2e0d 5497 lock contention on arcs_mtx
Prakash Surya <prakash.surya@delphix.com>
parents: 14837
diff changeset
235 void arc_flush(spa_t *spa, boolean_t retry);
6245
1a2a7cfb9f26 6429205 each zpool needs to monitor its throughput and throttle heavy writers
maybee
parents: 5642
diff changeset
236 void arc_tempreserve_clear(uint64_t reserve);
17451
1712dde80e8b 9465 ARC check for 'anon_size > arc_c/2' can stall the system
Don Brady <don.brady@delphix.com>
parents: 16265
diff changeset
237 int arc_tempreserve_space(spa_t *spa, uint64_t reserve, uint64_t txg);
789
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diff changeset
238
24249
78bc68a60a91 11918 metaslab improvements
Paul Dagnelie <pcd@delphix.com>
parents: 23516
diff changeset
239 uint64_t arc_all_memory(void);
15747
506e78b5eb98 6950 ARC should cache compressed data
George Wilson <george.wilson@delphix.com>
parents: 15660
diff changeset
240 uint64_t arc_max_bytes(void);
789
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diff changeset
241 void arc_init(void);
b348f31ed315 PSARC 2002/240 ZFS
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diff changeset
242 void arc_fini(void);
b348f31ed315 PSARC 2002/240 ZFS
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diff changeset
243
5450
b25030891c44 PSARC 2007/618 ZFS L2ARC
brendan
parents: 4849
diff changeset
244 /*
b25030891c44 PSARC 2007/618 ZFS L2ARC
brendan
parents: 4849
diff changeset
245 * Level 2 ARC
b25030891c44 PSARC 2007/618 ZFS L2ARC
brendan
parents: 4849
diff changeset
246 */
b25030891c44 PSARC 2007/618 ZFS L2ARC
brendan
parents: 4849
diff changeset
247
9816
847676ec1c5b PSARC 2008/353 zpool autoexpand property
George Wilson <George.Wilson@Sun.COM>
parents: 9412
diff changeset
248 void l2arc_add_vdev(spa_t *spa, vdev_t *vd);
5450
b25030891c44 PSARC 2007/618 ZFS L2ARC
brendan
parents: 4849
diff changeset
249 void l2arc_remove_vdev(vdev_t *vd);
6643
3a34b0dbb107 6625086 changing cachefile doesn't remove old cache on last user
eschrock
parents: 6245
diff changeset
250 boolean_t l2arc_vdev_present(vdev_t *vd);
25465
2c417db70a87 3525 Persistent L2ARC
George Amanakis <gamanakis@gmail.com>
parents: 24249
diff changeset
251 void l2arc_rebuild_vdev(vdev_t *vd, boolean_t reopen);
2c417db70a87 3525 Persistent L2ARC
George Amanakis <gamanakis@gmail.com>
parents: 24249
diff changeset
252 boolean_t l2arc_range_check_overlap(uint64_t bottom, uint64_t top,
2c417db70a87 3525 Persistent L2ARC
George Amanakis <gamanakis@gmail.com>
parents: 24249
diff changeset
253 uint64_t check);
5450
b25030891c44 PSARC 2007/618 ZFS L2ARC
brendan
parents: 4849
diff changeset
254 void l2arc_init(void);
b25030891c44 PSARC 2007/618 ZFS L2ARC
brendan
parents: 4849
diff changeset
255 void l2arc_fini(void);
7754
b80e4842ad54 6754011 SPA 3.0: lock breakup, i/o pipeline refactoring, device failure handling
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 7545
diff changeset
256 void l2arc_start(void);
b80e4842ad54 6754011 SPA 3.0: lock breakup, i/o pipeline refactoring, device failure handling
Jeff Bonwick <Jeff.Bonwick@Sun.COM>
parents: 7545
diff changeset
257 void l2arc_stop(void);
25465
2c417db70a87 3525 Persistent L2ARC
George Amanakis <gamanakis@gmail.com>
parents: 24249
diff changeset
258 void l2arc_spa_rebuild_start(spa_t *spa);
5450
b25030891c44 PSARC 2007/618 ZFS L2ARC
brendan
parents: 4849
diff changeset
259
13790
ac6eff781c67 3112 ztest does not honor ZFS_DEBUG
Matthew Ahrens <mahrens@delphix.com>
parents: 12351
diff changeset
260 #ifndef _KERNEL
ac6eff781c67 3112 ztest does not honor ZFS_DEBUG
Matthew Ahrens <mahrens@delphix.com>
parents: 12351
diff changeset
261 extern boolean_t arc_watch;
ac6eff781c67 3112 ztest does not honor ZFS_DEBUG
Matthew Ahrens <mahrens@delphix.com>
parents: 12351
diff changeset
262 extern int arc_procfd;
ac6eff781c67 3112 ztest does not honor ZFS_DEBUG
Matthew Ahrens <mahrens@delphix.com>
parents: 12351
diff changeset
263 #endif
ac6eff781c67 3112 ztest does not honor ZFS_DEBUG
Matthew Ahrens <mahrens@delphix.com>
parents: 12351
diff changeset
264
789
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ahrens
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diff changeset
265 #ifdef __cplusplus
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
266 }
b348f31ed315 PSARC 2002/240 ZFS
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parents:
diff changeset
267 #endif
b348f31ed315 PSARC 2002/240 ZFS
ahrens
parents:
diff changeset
268
b348f31ed315 PSARC 2002/240 ZFS
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diff changeset
269 #endif /* _SYS_ARC_H */