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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, Version 1.0 only
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6 * (the "License"). You may not use this file except in compliance
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7 * with the License.
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8 *
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9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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10 * or http://www.opensolaris.org/os/licensing.
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11 * See the License for the specific language governing permissions
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12 * and limitations under the License.
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13 *
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14 * When distributing Covered Code, include this CDDL HEADER in each
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15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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16 * If applicable, add the following below this CDDL HEADER, with the
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17 * fields enclosed by brackets "[]" replaced with your own identifying
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18 * information: Portions Copyright [yyyy] [name of copyright owner]
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19 *
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20 * CDDL HEADER END
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21 */
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22 /*
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23 * Copyright 2003 Sun Microsystems, Inc. All rights reserved.
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24 * Use is subject to license terms.
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25 */
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26
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27 #pragma ident "@(#)mhd_set.c 2.6 05/06/08 SMI"
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28
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29 #include "mhd_local.h"
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30
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31 /*
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32 * manipulate set list
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33 */
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34
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35 /*
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36 * global set list
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37 */
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38 static mutex_t mhd_set_mx = DEFAULTMUTEX;
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39 static uint_t mhd_nset = 0;
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40 static mhd_drive_set_t **mhd_sets = NULL;
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41
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42 /*
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43 * add drive to set
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44 */
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45 void
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46 mhd_add_drive_to_set(
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47 mhd_drive_set_t *sp,
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48 mhd_drive_t *dp
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49 )
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50 {
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51 mhd_drive_list_t *dlp = &sp->sr_drives;
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52
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53 /* check locks */
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54 assert(MUTEX_HELD(&mhd_set_mx));
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55 assert(MUTEX_HELD(&sp->sr_mx));
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56 assert(DRIVE_IS_IDLE(dp));
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57
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58 /* add to set */
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59 mhd_add_drive(dlp, dp);
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60
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61 /* adjust backlink */
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62 dp->dr_sp = sp;
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63 }
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64
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65 /*
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66 * delete drive from set
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67 */
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68 void
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69 mhd_del_drive_from_set(
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70 mhd_drive_t *dp
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71 )
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72 {
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73 mhd_drive_set_t *sp = dp->dr_sp;
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74 mhd_drive_list_t *dlp = &sp->sr_drives;
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75
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76 /* check locks */
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77 assert(MUTEX_HELD(&mhd_set_mx));
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78 assert(MUTEX_HELD(&sp->sr_mx));
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79 assert(DRIVE_IS_IDLE(dp));
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80
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81 /* delete from set */
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82 mhd_del_drive(dlp, dp);
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83
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84 /* adjust backlink */
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85 dp->dr_sp = NULL;
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86 }
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87
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88 /*
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89 * find set in list
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90 */
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91 static mhd_drive_set_t *
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92 mhd_find_set(
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93 char *setname
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94 )
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95 {
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96 uint_t i;
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97
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98 /* check lock */
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99 assert(MUTEX_HELD(&mhd_set_mx));
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100
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101 /* look for set */
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102 for (i = 0; (i < mhd_nset); ++i) {
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103 mhd_drive_set_t *sp = mhd_sets[i];
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104
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105 if (strcmp(setname, sp->sr_name) == 0)
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106 return (sp);
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107 }
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108
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109 /* not found */
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110 return (NULL);
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111 }
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112
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113 /*
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114 * wait for operation to complete
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115 */
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116 static void
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117 mhd_wait_set(
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118 mhd_drive_set_t *sp,
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119 mhd_drive_list_t *dlp,
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120 mhd_state_t state
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121 )
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122 {
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123 /* check lock */
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124 assert(MUTEX_HELD(&mhd_set_mx));
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125 assert(MUTEX_HELD(&sp->sr_mx));
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126
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127 /* wait for complete */
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128 for (;;) {
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129 uint_t cnt = 0;
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130 uint_t i;
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131
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132 /* kick threads */
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133 for (i = 0; (i < dlp->dl_ndrive); ++i) {
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134 mhd_drive_t *dp = dlp->dl_drives[i];
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135
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136 /* IDLE or ERRORED */
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137 if (state == DRIVE_IDLE) {
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138 if (DRIVE_IS_IDLE(dp))
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139 continue;
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140 }
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141
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142 /* operation complete */
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143 else {
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144 if (! (dp->dr_state & state))
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145 continue;
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146 }
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147
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148 /* kick thread */
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149 mhd_cv_broadcast(&dp->dr_cv);
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150 ++cnt;
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151 }
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152
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153 /* if complete, quit */
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154 if (cnt == 0)
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155 break;
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156
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157 /* wait for something to happen */
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158 (void) mhd_cv_wait(&sp->sr_cv, &sp->sr_mx);
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159 }
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160 }
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161
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162 /*
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163 * idle set
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164 */
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165 static int
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166 mhd_idle_set(
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167 mhd_drive_set_t *sp,
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168 mhd_drive_list_t *dlp,
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169 mhd_error_t *mhep
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170 )
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171 {
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172 uint_t i;
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173
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174 /* check lock */
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175 assert(MUTEX_HELD(&mhd_set_mx));
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176 assert(MUTEX_HELD(&sp->sr_mx));
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177
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178 /* disarm any failfast */
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179 if (dlp->dl_ndrive >= sp->sr_drives.dl_ndrive) {
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180 if (mhd_ff_disarm(sp, mhep) != 0)
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181 return (-1);
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182 }
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183
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184 /* set IDLING */
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185 for (i = 0; (i < dlp->dl_ndrive); ++i) {
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186 mhd_drive_t *dp = dlp->dl_drives[i];
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187
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188 if (! DRIVE_IS_IDLE(dp)) {
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189 if (mhd_state(dp, DRIVE_IDLING, mhep) != 0)
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190 return (-1);
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191 }
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192 }
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193
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194 /* wait for IDLE */
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195 mhd_wait_set(sp, dlp, DRIVE_IDLE);
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196
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197 /* return success */
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198 return (0);
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199 }
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200
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201 /*
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202 * create or update new set
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203 */
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204 mhd_drive_set_t *
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205 mhd_create_set(
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206 mhd_set_t *mhsp,
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207 mhd_opts_t options,
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208 mhd_drive_list_t *dlp,
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209 mhd_error_t *mhep
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210 )
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211 {
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212 char *setname;
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213 mhd_drive_set_t *sp;
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214 mhd_drive_list_t *sp_dlp;
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215 mhd_drive_set_t *null_sp;
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216 uint_t i;
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217
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218 /* check locks */
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219 assert(MUTEX_HELD(&mhd_set_mx));
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220
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221 /* get setname */
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222 if (mhsp == NULL)
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223 setname = "";
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224 else
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225 setname = mhsp->setname;
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226
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227 /* find or create set */
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228 if ((sp = mhd_find_set(setname)) == NULL) {
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229 /* allocate and initialize set */
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230 sp = Zalloc(sizeof (*sp));
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231 sp->sr_name = Strdup(setname);
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232 mhd_mx_init(&sp->sr_mx);
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233 mhd_cv_init(&sp->sr_cv);
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234 sp->sr_ff = -1;
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235
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236 /* append to set list */
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237 ++mhd_nset;
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238 mhd_sets = Realloc(mhd_sets, (mhd_nset * sizeof (*mhd_sets)));
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239 mhd_sets[mhd_nset - 1] = sp;
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240 }
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241 sp_dlp = &sp->sr_drives;
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242
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243 /* if just grabbing null set, return */
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244 if (mhsp == NULL)
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245 return (sp);
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246 assert(strcmp(setname, "") != 0);
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247 assert(mhep != NULL);
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248
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249 /* get null set */
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250 null_sp = mhd_create_set(NULL, 0, NULL, NULL);
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251 assert(null_sp != NULL);
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252 assert(sp != null_sp);
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253
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254 /* grab set lock */
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255 mhd_mx_lock(&sp->sr_mx);
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256
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257 /* save options */
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258 if (options & MHD_SERIAL)
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259 sp->sr_options |= MHD_SERIAL;
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260 else
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261 sp->sr_options &= ~MHD_SERIAL;
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262
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263 /* move drives no longer in set to null set */
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264 if (! (options & MHD_PARTIAL_SET)) {
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265 for (i = 0; (i < sp_dlp->dl_ndrive); /* void */) {
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266 mhd_drive_t *dp = sp_dlp->dl_drives[i];
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267 uint_t j;
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268
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269 /* check still there */
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270 for (j = 0; (j < mhsp->drives.drives_len); ++j) {
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271 mhd_drivename_t mhdp;
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272
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273 mhdp = mhsp->drives.drives_val[j];
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274 if (strcmp(dp->dr_rname, mhdp) == 0)
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275 break;
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276 }
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277 if (j < mhsp->drives.drives_len) {
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278 ++i;
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279 continue;
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280 }
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281
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282 /* idle the drive */
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283 if (mhd_idle(dp, mhep) != 0)
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284 mhd_clrerror(mhep);
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285
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286 /* move to null set */
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287 mhd_del_drive_from_set(dp);
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288 mhd_mx_unlock(&sp->sr_mx);
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289 mhd_mx_lock(&null_sp->sr_mx);
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290 mhd_add_drive_to_set(null_sp, dp);
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291 mhd_mx_unlock(&null_sp->sr_mx);
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292 mhd_mx_lock(&sp->sr_mx);
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293 }
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294 }
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295
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296 /* add new drives to lists */
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297 for (i = 0; (i < mhsp->drives.drives_len); ++i) {
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298 mhd_drivename_t mhdp = mhsp->drives.drives_val[i];
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299 uint_t j;
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300 mhd_drive_t *dp;
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301
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302 /* check already there */
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303 for (j = 0; (j < dlp->dl_ndrive); ++j) {
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304 dp = dlp->dl_drives[j];
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305 if (strcmp(mhdp, dp->dr_rname) == 0)
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306 break;
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307 }
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308 if (j < dlp->dl_ndrive) {
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309 mhd_add_drive(dlp, dp);
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310 continue;
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311 }
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312
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313 /* add drive to set */
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314 if ((dp = mhd_create_drive(sp, mhdp, NULL, mhep)) == NULL) {
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315 mhde_perror(mhep, "mhd_create_drive: %s", mhdp);
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316 continue;
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317 }
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318 mhd_add_drive(dlp, dp);
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319 }
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320
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321 /* debug */
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322 #ifdef MHD_DEBUG
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323 if (mhd_debug > 0) {
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324 for (i = 0; (i < mhd_nset); ++i) {
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325 mhd_drive_set_t *sp = mhd_sets[i];
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326 mhd_drive_list_t *dlp = &sp->sr_drives;
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327 char buf[10240];
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328 uint_t j;
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329
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330 (void) snprintf(buf, sizeof (buf), "set '%s':",
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331 sp->sr_name);
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332 for (j = 0; (j < dlp->dl_ndrive); ++j) {
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333 mhd_drive_t *dp = dlp->dl_drives[j];
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334 char *p;
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335
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336 if ((p = strrchr(dp->dr_rname, '/')) != NULL)
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337 ++p;
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338 else
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339 p = dp->dr_rname;
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340 (void) strncat(buf, " ", sizeof (buf));
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341 (void) strncat(buf, p, sizeof (buf));
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342 }
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343 buf[sizeof (buf) - 1] = '\0';
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344 mhd_eprintf("%s\n", buf);
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345 }
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346 }
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347 #endif /* MHD_DEBUG */
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348
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349 /* unlock, return set */
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350 mhd_mx_unlock(&sp->sr_mx);
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351 return (sp);
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352 }
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353
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354 /*
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355 * find drive
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356 */
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357 mhd_drive_t *
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358 mhd_find_drive(
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359 char *rname
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360 )
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361 {
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362 uint_t i;
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363
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364 /* check locks */
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365 assert(MUTEX_HELD(&mhd_set_mx));
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366
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367 /* for each set */
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368 for (i = 0; (i < mhd_nset); ++i) {
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369 mhd_drive_set_t *sp = mhd_sets[i];
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370 mhd_drive_list_t *dlp = &sp->sr_drives;
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371 uint_t j;
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372
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373 /* for each drive */
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374 for (j = 0; (j < dlp->dl_ndrive); ++j) {
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375 mhd_drive_t *dp = dlp->dl_drives[j];
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376
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377 if (strcmp(rname, dp->dr_rname) == 0)
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378 return (dp);
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379 }
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380 }
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381
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382 /* not found */
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383 return (NULL);
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384 }
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385
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386 /*
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387 * list all the drives
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388 */
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389 int
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390 mhd_list_drives(
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391 char *path,
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392 mhd_did_flags_t flags,
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393 mhd_list_res_t *resultsp,
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394 mhd_error_t *mhep
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395 )
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396 {
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397 mhd_state_t state;
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398 uint_t ndrive, i, j, c;
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399
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400 /* grab lock */
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401 mhd_mx_lock(&mhd_set_mx);
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402
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403 /* add path to list */
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404 if (mhd_create_drives(path, mhep) != 0) {
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405 mhd_mx_unlock(&mhd_set_mx);
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406 return (-1);
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407 }
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408
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409 /* get what we want */
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410 state = 0;
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411 if (flags & MHD_DID_SERIAL)
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412 state |= DRIVE_SERIALING;
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413 if (flags & MHD_DID_TIME)
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414 state |= DRIVE_VTOCING;
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415 if (flags & MHD_DID_CINFO)
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416 state |= DRIVE_CINFOING;
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417
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418 /* ident and count drives */
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419 for (ndrive = 0, i = 0; (i < mhd_nset); ++i) {
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420 mhd_drive_set_t *sp = mhd_sets[i];
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421 mhd_drive_list_t *dlp = &sp->sr_drives;
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422
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423 /* count drives */
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424 ndrive += dlp->dl_ndrive;
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425
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426 /* ident drives */
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427 if (state != 0) {
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428 mhd_mx_lock(&sp->sr_mx);
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|
|
429 for (j = 0; (j < dlp->dl_ndrive); ++j) {
|
|
|
430 mhd_drive_t *dp = dlp->dl_drives[j];
|
|
|
431
|
|
|
432 if (mhd_state_set(dp, state, mhep) != 0) {
|
|
|
433 mhd_mx_unlock(&sp->sr_mx);
|
|
|
434 mhd_mx_unlock(&mhd_set_mx);
|
|
|
435 return (-1);
|
|
|
436 }
|
|
|
437 }
|
|
|
438 mhd_wait_set(sp, dlp, state);
|
|
|
439 mhd_mx_unlock(&sp->sr_mx);
|
|
|
440 }
|
|
|
441 }
|
|
|
442
|
|
|
443 /* build list */
|
|
|
444 assert(resultsp->results.mhd_drive_info_list_t_len == 0);
|
|
|
445 assert(resultsp->results.mhd_drive_info_list_t_val == NULL);
|
|
|
446 resultsp->results.mhd_drive_info_list_t_len = ndrive;
|
|
|
447 resultsp->results.mhd_drive_info_list_t_val = Zalloc(
|
|
|
448 ndrive * sizeof (*resultsp->results.mhd_drive_info_list_t_val));
|
|
|
449 for (c = 0, i = 0; (i < mhd_nset); ++i) {
|
|
|
450 mhd_drive_set_t *sp = mhd_sets[i];
|
|
|
451 mhd_drive_list_t *dlp = &sp->sr_drives;
|
|
|
452
|
|
|
453 mhd_mx_lock(&sp->sr_mx);
|
|
|
454 for (j = 0; (j < dlp->dl_ndrive); ++j) {
|
|
|
455 mhd_drive_t *dp = dlp->dl_drives[j];
|
|
|
456 mhd_drive_info_t *ip =
|
|
|
457 &resultsp->results.mhd_drive_info_list_t_val[c++];
|
|
|
458
|
|
|
459 ip->dif_name = Strdup(dp->dr_rname);
|
|
|
460 ip->dif_id = dp->dr_drive_id;
|
|
|
461 }
|
|
|
462 mhd_mx_unlock(&sp->sr_mx);
|
|
|
463 }
|
|
|
464 assert(c == ndrive);
|
|
|
465
|
|
|
466 /* unlock, return count */
|
|
|
467 mhd_mx_unlock(&mhd_set_mx);
|
|
|
468 return (ndrive);
|
|
|
469 }
|
|
|
470
|
|
|
471 /*
|
|
|
472 * release drives
|
|
|
473 */
|
|
|
474 static int
|
|
|
475 mhd_release_set(
|
|
|
476 mhd_drive_set_t *sp,
|
|
|
477 mhd_drive_list_t *dlp,
|
|
|
478 mhd_error_t *mhep
|
|
|
479 )
|
|
|
480 {
|
|
|
481 uint_t i;
|
|
|
482
|
|
|
483 /* check locks */
|
|
|
484 assert(MUTEX_HELD(&mhd_set_mx));
|
|
|
485 assert(MUTEX_HELD(&sp->sr_mx));
|
|
|
486
|
|
|
487 /* idle set */
|
|
|
488 if (mhd_idle_set(sp, dlp, mhep) != 0)
|
|
|
489 return (-1);
|
|
|
490
|
|
|
491 /* release drives */
|
|
|
492 for (i = 0; (i < dlp->dl_ndrive); i++) {
|
|
|
493 mhd_drive_t *dp = dlp->dl_drives[i];
|
|
|
494
|
|
|
495 if (mhd_state(dp, DRIVE_RELEASING, mhep) != 0)
|
|
|
496 return (-1);
|
|
|
497 }
|
|
|
498 mhd_wait_set(sp, dlp, DRIVE_IDLE);
|
|
|
499
|
|
|
500 /* return success */
|
|
|
501 return (0);
|
|
|
502 }
|
|
|
503
|
|
|
504 /*
|
|
|
505 * release drives in set
|
|
|
506 */
|
|
|
507 int
|
|
|
508 mhd_release_drives(
|
|
|
509 mhd_set_t *mhsp,
|
|
|
510 mhd_opts_t options,
|
|
|
511 mhd_error_t *mhep
|
|
|
512 )
|
|
|
513 {
|
|
|
514 mhd_drive_list_t dl = mhd_null_list;
|
|
|
515 mhd_drive_set_t *sp;
|
|
|
516 int rval;
|
|
|
517
|
|
|
518 /* grab global lock */
|
|
|
519 mhd_mx_lock(&mhd_set_mx);
|
|
|
520
|
|
|
521 /* create or update set */
|
|
|
522 if ((sp = mhd_create_set(mhsp, options, &dl, mhep)) == NULL) {
|
|
|
523 mhd_mx_unlock(&mhd_set_mx);
|
|
|
524 mhd_free_list(&dl);
|
|
|
525 return (-1);
|
|
|
526 }
|
|
|
527
|
|
|
528 /* lock set */
|
|
|
529 mhd_mx_lock(&sp->sr_mx);
|
|
|
530
|
|
|
531 /* release drives */
|
|
|
532 rval = mhd_release_set(sp, &dl, mhep);
|
|
|
533
|
|
|
534 /* unlock, return success */
|
|
|
535 out:
|
|
|
536 mhd_mx_unlock(&sp->sr_mx);
|
|
|
537 mhd_mx_unlock(&mhd_set_mx);
|
|
|
538 mhd_free_list(&dl);
|
|
|
539 return (rval);
|
|
|
540 }
|
|
|
541
|
|
|
542 /*
|
|
|
543 * reserve drives
|
|
|
544 */
|
|
|
545 static int
|
|
|
546 mhd_reserve_set(
|
|
|
547 mhd_drive_set_t *sp,
|
|
|
548 mhd_drive_list_t *dlp,
|
|
|
549 mhd_error_t *mhep
|
|
|
550 )
|
|
|
551 {
|
|
|
552 mhd_msec_t ff = sp->sr_timeouts.mh_ff;
|
|
|
553 uint_t retry, i, ok;
|
|
|
554 int rval = 0;
|
|
|
555
|
|
|
556 /* check locks */
|
|
|
557 assert(MUTEX_HELD(&mhd_set_mx));
|
|
|
558 assert(MUTEX_HELD(&sp->sr_mx));
|
|
|
559
|
|
|
560 /* idle set, idle everyone if cancelling failfast */
|
|
|
561 if (ff == 0) {
|
|
|
562 if (mhd_idle_set(sp, &sp->sr_drives, mhep) != 0)
|
|
|
563 return (-1);
|
|
|
564 } else {
|
|
|
565 if (mhd_idle_set(sp, dlp, mhep) != 0)
|
|
|
566 return (-1);
|
|
|
567 }
|
|
|
568
|
|
|
569 /*
|
|
|
570 * Try to take ownership of the drives twice. This helps
|
|
|
571 * to avoid the situation where the other machine retakes
|
|
|
572 * ownership of a majority drives back, but then kills itself
|
|
|
573 * leaving no owners.
|
|
|
574 */
|
|
|
575 for (retry = 0; (retry < 2); ++retry) {
|
|
|
576 for (i = 0; (i < dlp->dl_ndrive); i++) {
|
|
|
577 mhd_drive_t *dp = dlp->dl_drives[i];
|
|
|
578
|
|
|
579 if ((retry == 0) ||
|
|
|
580 ((dp->dr_state == DRIVE_ERRORED) &&
|
|
|
581 (dp->dr_errnum == EACCES))) {
|
|
|
582 if (mhd_state(dp, DRIVE_RESERVING, mhep) != 0)
|
|
|
583 return (-1);
|
|
|
584 }
|
|
|
585 }
|
|
|
586 mhd_wait_set(sp, dlp, DRIVE_IDLE);
|
|
|
587 }
|
|
|
588
|
|
|
589 /*
|
|
|
590 * Did the take ownership succeed on a majority of the drives?
|
|
|
591 */
|
|
|
592 ok = 0;
|
|
|
593 for (i = 0; (i < dlp->dl_ndrive); ++i) {
|
|
|
594 mhd_drive_t *dp = dlp->dl_drives[i];
|
|
|
595
|
|
|
596 if (dp->dr_state == DRIVE_IDLE)
|
|
|
597 ++ok;
|
|
|
598 }
|
|
|
599
|
|
|
600 /*
|
|
|
601 * Let the replica majority be the deciding factor, if able to get
|
|
|
602 * at least a single drive reserved.
|
|
|
603 */
|
|
|
604 if (ok == 0) {
|
|
|
605 rval = mhd_error(mhep, MHD_E_MAJORITY, sp->sr_name);
|
|
|
606 goto out;
|
|
|
607 }
|
|
|
608
|
|
|
609 /*
|
|
|
610 * Enable the failfast probes if we haven't given up yet.
|
|
|
611 */
|
|
|
612 switch (sp->sr_ff_mode) {
|
|
|
613
|
|
|
614 /* do nothing */
|
|
|
615 default:
|
|
|
616 assert(0);
|
|
|
617 /* FALLTHROUGH */
|
|
|
618 case MHD_FF_NONE:
|
|
|
619 goto out;
|
|
|
620
|
|
|
621 /* old style per drive failfast */
|
|
|
622 case MHD_FF_DRIVER:
|
|
|
623 for (i = 0; (i < dlp->dl_ndrive); i++) {
|
|
|
624 mhd_drive_t *dp = dlp->dl_drives[i];
|
|
|
625
|
|
|
626 if (dp->dr_state != DRIVE_ERRORED) {
|
|
|
627 if (mhd_state(dp, DRIVE_FAILFASTING,
|
|
|
628 mhep) != 0) {
|
|
|
629 rval = -1;
|
|
|
630 goto out;
|
|
|
631 }
|
|
|
632 }
|
|
|
633 }
|
|
|
634 mhd_wait_set(sp, dlp, DRIVE_IDLE);
|
|
|
635 break;
|
|
|
636
|
|
|
637 /* failfast probe threads */
|
|
|
638 case MHD_FF_DEBUG:
|
|
|
639 case MHD_FF_HALT:
|
|
|
640 case MHD_FF_PANIC:
|
|
|
641 if (ff != 0) {
|
|
|
642 if (mhd_ff_open(sp, mhep) != 0) {
|
|
|
643 rval = -1;
|
|
|
644 goto out;
|
|
|
645 }
|
|
|
646 for (i = 0; (i < dlp->dl_ndrive); i++) {
|
|
|
647 mhd_drive_t *dp = dlp->dl_drives[i];
|
|
|
648
|
|
|
649 if (mhd_state_set(dp, DRIVE_PROBING,
|
|
|
650 mhep) != 0) {
|
|
|
651 rval = -1;
|
|
|
652 goto out;
|
|
|
653 }
|
|
|
654 dp->dr_time = mhd_time();
|
|
|
655 }
|
|
|
656 (void) mhd_ff_rearm(sp, mhep);
|
|
|
657 }
|
|
|
658 break;
|
|
|
659 }
|
|
|
660
|
|
|
661 /* cleanup, return success */
|
|
|
662 out:
|
|
|
663 if (rval != 0) {
|
|
|
664 mhd_error_t status = mhd_null_error;
|
|
|
665
|
|
|
666 (void) mhd_release_set(sp, dlp, &status);
|
|
|
667 mhd_clrerror(&status);
|
|
|
668 }
|
|
|
669 return (rval);
|
|
|
670 }
|
|
|
671
|
|
|
672 /*
|
|
|
673 * reserve drives in set
|
|
|
674 */
|
|
|
675 int
|
|
|
676 mhd_reserve_drives(
|
|
|
677 mhd_set_t *mhsp,
|
|
|
678 mhd_mhiargs_t *timeoutp,
|
|
|
679 mhd_ff_mode_t ff_mode,
|
|
|
680 mhd_opts_t options,
|
|
|
681 mhd_error_t *mhep
|
|
|
682 )
|
|
|
683 {
|
|
|
684 mhd_drive_list_t dl = mhd_null_list;
|
|
|
685 mhd_drive_set_t *sp;
|
|
|
686 int rval;
|
|
|
687
|
|
|
688 /* grab global lock */
|
|
|
689 mhd_mx_lock(&mhd_set_mx);
|
|
|
690
|
|
|
691 /* create or update set */
|
|
|
692 if ((sp = mhd_create_set(mhsp, options, &dl, mhep)) == NULL) {
|
|
|
693 mhd_mx_unlock(&mhd_set_mx);
|
|
|
694 mhd_free_list(&dl);
|
|
|
695 return (-1);
|
|
|
696 }
|
|
|
697
|
|
|
698 /* lock set */
|
|
|
699 mhd_mx_lock(&sp->sr_mx);
|
|
|
700
|
|
|
701 /* can't change mode or timeouts of partial set */
|
|
|
702 if ((dl.dl_ndrive != sp->sr_drives.dl_ndrive) &&
|
|
|
703 (options & MHD_PARTIAL_SET)) {
|
|
|
704 if (ff_mode != sp->sr_ff_mode) {
|
|
|
705 mhd_eprintf("%s: invalid ff_mode %d now %d\n",
|
|
|
706 sp->sr_name, ff_mode, sp->sr_ff_mode);
|
|
|
707 ff_mode = sp->sr_ff_mode;
|
|
|
708 }
|
|
|
709 if (timeoutp->mh_ff < sp->sr_timeouts.mh_ff) {
|
|
|
710 mhd_eprintf("%s: invalid mh_ff %d now %d\n",
|
|
|
711 sp->sr_name, timeoutp->mh_ff,
|
|
|
712 sp->sr_timeouts.mh_ff);
|
|
|
713 timeoutp->mh_ff = sp->sr_timeouts.mh_ff;
|
|
|
714 }
|
|
|
715 }
|
|
|
716
|
|
|
717 /* save timouts and mode */
|
|
|
718 sp->sr_timeouts = *timeoutp;
|
|
|
719 sp->sr_ff_mode = ff_mode;
|
|
|
720
|
|
|
721 /* reserve drives */
|
|
|
722 rval = mhd_reserve_set(sp, &dl, mhep);
|
|
|
723
|
|
|
724 /* unlock, return success */
|
|
|
725 out:
|
|
|
726 mhd_mx_unlock(&sp->sr_mx);
|
|
|
727 mhd_mx_unlock(&mhd_set_mx);
|
|
|
728 mhd_free_list(&dl);
|
|
|
729 return (rval);
|
|
|
730 }
|
|
|
731
|
|
|
732 /*
|
|
|
733 * status drives
|
|
|
734 */
|
|
|
735 static int
|
|
|
736 mhd_status_set(
|
|
|
737 mhd_drive_set_t *sp,
|
|
|
738 mhd_drive_list_t *dlp,
|
|
|
739 mhd_error_t *mhep
|
|
|
740 )
|
|
|
741 {
|
|
|
742 uint_t i;
|
|
|
743
|
|
|
744 /* check locks */
|
|
|
745 assert(MUTEX_HELD(&mhd_set_mx));
|
|
|
746 assert(MUTEX_HELD(&sp->sr_mx));
|
|
|
747
|
|
|
748 /* status drives */
|
|
|
749 for (i = 0; (i < dlp->dl_ndrive); i++) {
|
|
|
750 mhd_drive_t *dp = dlp->dl_drives[i];
|
|
|
751
|
|
|
752 if (mhd_state_set(dp, DRIVE_STATUSING, mhep) != 0)
|
|
|
753 return (-1);
|
|
|
754 }
|
|
|
755 mhd_wait_set(sp, dlp, DRIVE_STATUSING);
|
|
|
756
|
|
|
757 /* return success */
|
|
|
758 return (0);
|
|
|
759 }
|
|
|
760
|
|
|
761 /*
|
|
|
762 * status drives in set
|
|
|
763 */
|
|
|
764 int
|
|
|
765 mhd_status_drives(
|
|
|
766 mhd_set_t *mhsp,
|
|
|
767 mhd_opts_t options,
|
|
|
768 mhd_drive_status_t **status,
|
|
|
769 mhd_error_t *mhep
|
|
|
770 )
|
|
|
771 {
|
|
|
772 mhd_drive_list_t dl = mhd_null_list;
|
|
|
773 mhd_drive_list_t *dlp = &dl;
|
|
|
774 mhd_drive_set_t *sp;
|
|
|
775 uint_t i;
|
|
|
776 int rval = 0;
|
|
|
777
|
|
|
778 /* grab global lock */
|
|
|
779 mhd_mx_lock(&mhd_set_mx);
|
|
|
780
|
|
|
781 /* create or update set */
|
|
|
782 if ((sp = mhd_create_set(mhsp, options, &dl, mhep)) == NULL) {
|
|
|
783 mhd_mx_unlock(&mhd_set_mx);
|
|
|
784 mhd_free_list(&dl);
|
|
|
785 return (-1);
|
|
|
786 }
|
|
|
787
|
|
|
788 /* lock set */
|
|
|
789 mhd_mx_lock(&sp->sr_mx);
|
|
|
790
|
|
|
791 /* status drives */
|
|
|
792 if (mhd_status_set(sp, &dl, mhep) != 0) {
|
|
|
793 rval = -1;
|
|
|
794 goto out;
|
|
|
795 }
|
|
|
796
|
|
|
797 /* build list */
|
|
|
798 *status = Zalloc(dlp->dl_ndrive * sizeof (**status));
|
|
|
799 for (i = 0; (i < dlp->dl_ndrive); ++i) {
|
|
|
800 mhd_drive_t *dp = dlp->dl_drives[i];
|
|
|
801 mhd_drive_status_t *statusp = &(*status)[i];
|
|
|
802
|
|
|
803 statusp->drive = Strdup(dp->dr_rname);
|
|
|
804 statusp->errnum = dp->dr_errnum;
|
|
|
805 }
|
|
|
806 assert(i == dlp->dl_ndrive);
|
|
|
807 rval = dlp->dl_ndrive;
|
|
|
808
|
|
|
809 /* unlock, return count */
|
|
|
810 out:
|
|
|
811 mhd_mx_unlock(&sp->sr_mx);
|
|
|
812 mhd_mx_unlock(&mhd_set_mx);
|
|
|
813 mhd_free_list(&dl);
|
|
|
814 return (rval);
|
|
|
815 }
|
