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03a8a07d | 1 | /* |
1832f310 | 2 | * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved. |
5a32d2c1 | 3 | * Copyright (C) 2004-2016 Red Hat, Inc. All rights reserved. |
03a8a07d | 4 | * |
6606c3ae | 5 | * This file is part of LVM2. |
03a8a07d | 6 | * |
6606c3ae AK |
7 | * This copyrighted material is made available to anyone wishing to use, |
8 | * modify, copy, or redistribute it subject to the terms and conditions | |
be684599 | 9 | * of the GNU Lesser General Public License v.2.1. |
03a8a07d | 10 | * |
be684599 | 11 | * You should have received a copy of the GNU Lesser General Public License |
6606c3ae | 12 | * along with this program; if not, write to the Free Software Foundation, |
fcbef05a | 13 | * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
03a8a07d AK |
14 | */ |
15 | ||
16 | #include "tools.h" | |
17 | ||
18722dfd | 18 | static int _lvresize_params(struct cmd_context *cmd, struct lvresize_params *lp) |
241913fe | 19 | { |
f45b6894 | 20 | const char *type_str = arg_str_value(cmd, type_ARG, NULL); |
7a9efc5f | 21 | int only_linear = 0; |
264827cb | 22 | int set_fsopt = 0; |
18722dfd | 23 | int set_extents_and_size = 0; |
f45b6894 | 24 | |
18722dfd | 25 | memset(lp, 0, sizeof(struct lvresize_params)); |
7a9efc5f | 26 | |
18722dfd DT |
27 | switch (cmd->command->command_enum) { |
28 | case lvextend_policy_CMD: | |
29 | lp->resize = LV_EXTEND; | |
30 | lp->size = 0; | |
31 | lp->extents = 0; | |
32 | lp->percent = PERCENT_LV; | |
33 | lp->sign = SIGN_PLUS; | |
34 | lp->poolmetadata_size = 0; | |
35 | lp->use_policies = 1; | |
36 | break; | |
37 | ||
38 | case lvextend_pool_metadata_CMD: | |
39 | case lvresize_pool_metadata_CMD: | |
40 | lp->resize = LV_EXTEND; | |
41 | lp->size = 0; | |
42 | lp->extents = 0; | |
43 | lp->percent = PERCENT_NONE; | |
44 | lp->sign = SIGN_NONE; | |
45 | lp->poolmetadata_size = arg_uint64_value(cmd, poolmetadatasize_ARG, 0); | |
46 | lp->poolmetadata_sign = arg_sign_value(cmd, poolmetadatasize_ARG, SIGN_NONE); | |
47 | break; | |
48 | ||
49 | case lvextend_pv_CMD: | |
50 | case lvresize_pv_CMD: | |
51 | lp->resize = LV_EXTEND; | |
52 | lp->size = 0; | |
53 | lp->extents = 0; | |
54 | lp->percent_value = 100; | |
55 | lp->percent = PERCENT_PVS; | |
56 | lp->sign = SIGN_PLUS; | |
57 | lp->poolmetadata_size = 0; | |
264827cb | 58 | set_fsopt = 1; |
18722dfd DT |
59 | break; |
60 | ||
61 | case lvextend_size_CMD: | |
62 | lp->resize = LV_EXTEND; | |
18722dfd DT |
63 | if ((lp->poolmetadata_size = arg_uint64_value(cmd, poolmetadatasize_ARG, 0))) |
64 | lp->poolmetadata_sign = arg_sign_value(cmd, poolmetadatasize_ARG, SIGN_NONE); | |
65 | set_extents_and_size = 1; | |
264827cb | 66 | set_fsopt = 1; |
18722dfd | 67 | break; |
241913fe | 68 | |
18722dfd | 69 | case lvreduce_size_CMD: |
241913fe | 70 | lp->resize = LV_REDUCE; |
18722dfd | 71 | lp->poolmetadata_size = 0; |
18722dfd | 72 | set_extents_and_size = 1; |
264827cb | 73 | set_fsopt = 1; |
18722dfd DT |
74 | break; |
75 | ||
76 | case lvresize_size_CMD: | |
0a525832 | 77 | lp->resize = LV_ANY; |
18722dfd | 78 | lp->poolmetadata_size = arg_uint64_value(cmd, poolmetadatasize_ARG, 0); |
18722dfd DT |
79 | if ((lp->poolmetadata_size = arg_uint64_value(cmd, poolmetadatasize_ARG, 0))) |
80 | lp->poolmetadata_sign = arg_sign_value(cmd, poolmetadatasize_ARG, SIGN_NONE); | |
81 | set_extents_and_size = 1; | |
264827cb | 82 | set_fsopt = 1; |
18722dfd | 83 | break; |
0a525832 | 84 | |
18722dfd DT |
85 | default: |
86 | log_error(INTERNAL_ERROR "unknown lvresize type"); | |
87 | return 0; | |
88 | }; | |
89 | ||
264827cb DT |
90 | if (set_fsopt) { |
91 | const char *str; | |
92 | ||
93 | if (arg_is_set(cmd, resizefs_ARG) && arg_is_set(cmd, fs_ARG)) { | |
94 | log_error("Options --fs and --resizefs cannot be used together."); | |
95 | log_error("--resizefs is equivalent to --fs resize."); | |
96 | return 0; | |
97 | } | |
98 | ||
1fb5107e | 99 | #ifdef HAVE_BLKID_SUBLKS_FSINFO |
1924fed3 DT |
100 | /* |
101 | * When the libblkid fs info feature is available, use the | |
102 | * the newer fs resizing capabability unless the older | |
103 | * fsadm-based resizing is requested with --fs resize_fsadm. | |
104 | */ | |
264827cb DT |
105 | if ((str = arg_str_value(cmd, fs_ARG, NULL))) { |
106 | if (!strcmp(str, "checksize") || | |
107 | !strcmp(str, "resize") || | |
108 | !strcmp(str, "resize_fsadm")) { | |
109 | strncpy(lp->fsopt, str, sizeof(lp->fsopt)-1); | |
110 | } else if (!strcmp(str, "ignore")) { | |
111 | lp->fsopt[0] = '\0'; | |
112 | } else { | |
113 | log_error("Unknown --fs value."); | |
114 | return 0; | |
115 | } | |
116 | lp->user_set_fs = 1; | |
117 | } else if (arg_is_set(cmd, resizefs_ARG)) { | |
118 | /* --resizefs alone equates to --fs resize */ | |
119 | strncpy(lp->fsopt, "resize", sizeof(lp->fsopt)-1); | |
120 | lp->user_set_fs = 1; | |
121 | } else { | |
122 | /* | |
123 | * Use checksize when no fs option is specified. | |
124 | * checksize with extend does nothing: the LV | |
125 | * is extended and any fs is ignored. | |
126 | * checksize with reduce checks for an fs that | |
127 | * needs reducing: the LV is reduced only if the | |
128 | * fs does not need to be reduced (or no fs.) | |
129 | */ | |
130 | strncpy(lp->fsopt, "checksize", sizeof(lp->fsopt)-1); | |
131 | } | |
1924fed3 DT |
132 | #else |
133 | /* | |
134 | * When the libblkid fs info feature is not available we can only | |
135 | * use fsadm, so --resizefs, --fs resize, --fs resize_fsadm | |
136 | * all translate to resize_fsadm. | |
137 | */ | |
138 | if ((str = arg_str_value(cmd, fs_ARG, NULL))) { | |
139 | if (!strcmp(str, "resize")) { | |
140 | log_warn("Using fsadm for file system handling (resize_fsadm)."); | |
141 | strcpy(lp->fsopt, "resize_fsadm"); | |
142 | } else if (!strcmp(str, "resize_fsadm")) { | |
143 | strcpy(lp->fsopt, "resize_fsadm"); | |
144 | } else if (!strcmp(str, "ignore")) { | |
145 | log_warn("Ignoring unsupported --fs ignore with fsadm resizing."); | |
146 | } else { | |
147 | log_error("Unknown --fs value."); | |
148 | return 0; | |
149 | } | |
150 | } else if (arg_is_set(cmd, resizefs_ARG)) { | |
151 | /* --resizefs alone equates to --fs resize_fsadm */ | |
152 | strcpy(lp->fsopt, "resize_fsadm"); | |
153 | } | |
154 | #endif | |
264827cb DT |
155 | if (lp->fsopt[0]) |
156 | lp->nofsck = arg_is_set(cmd, nofsck_ARG); | |
157 | ||
158 | if (!strcmp(lp->fsopt, "resize_fsadm") && arg_is_set(cmd, fsmode_ARG)) { | |
159 | log_error("The --fsmode option does not apply to resize_fsadm."); | |
160 | return 0; | |
161 | } | |
162 | ||
163 | if ((str = arg_str_value(cmd, fsmode_ARG, NULL))) { | |
164 | if (!strcmp(str, "nochange") || | |
165 | !strcmp(str, "offline") || | |
166 | !strcmp(str, "manage")) { | |
167 | strncpy(lp->fsmode, str, sizeof(lp->fsmode)-1); | |
168 | lp->user_set_fsmode = 1; | |
169 | } else { | |
170 | log_error("Unknown --fsmode value."); | |
171 | return 0; | |
172 | } | |
173 | } else { | |
174 | /* Use manage when no fsmode option is specified. */ | |
175 | strncpy(lp->fsmode, "manage", sizeof(lp->fsmode)-1); | |
176 | } | |
177 | } | |
178 | ||
18722dfd | 179 | if (set_extents_and_size) { |
f45b6894 | 180 | if ((lp->extents = arg_uint_value(cmd, extents_ARG, 0))) { |
c4b1bfa5 | 181 | lp->sign = arg_sign_value(cmd, extents_ARG, SIGN_NONE); |
f45b6894 ZK |
182 | lp->percent = arg_percent_value(cmd, extents_ARG, PERCENT_NONE); |
183 | } | |
f45b6894 | 184 | if ((lp->size = arg_uint64_value(cmd, size_ARG, 0))) { |
c4b1bfa5 | 185 | lp->sign = arg_sign_value(cmd, size_ARG, SIGN_NONE); |
f45b6894 | 186 | lp->percent = PERCENT_NONE; |
a341cab7 | 187 | } |
f45b6894 ZK |
188 | if (lp->size && lp->extents) { |
189 | log_error("Please specify either size or extents but not both."); | |
190 | return 0; | |
a341cab7 | 191 | } |
03a8a07d AK |
192 | } |
193 | ||
18722dfd DT |
194 | lp->alloc = (alloc_policy_t) arg_uint_value(cmd, alloc_ARG, 0); |
195 | lp->yes = arg_is_set(cmd, yes_ARG); | |
196 | lp->force = arg_is_set(cmd, force_ARG), | |
197 | lp->nosync = arg_is_set(cmd, nosync_ARG); | |
03a8a07d | 198 | |
18722dfd DT |
199 | if (type_str) { |
200 | if (!strcmp(type_str, "linear")) { | |
201 | type_str = "striped"; | |
202 | only_linear = 1; /* User requested linear only target */ | |
203 | } | |
17dd04ca | 204 | |
18722dfd DT |
205 | if (!(lp->segtype = get_segtype_from_string(cmd, type_str))) |
206 | return_0; | |
d38bf361 | 207 | } |
03a8a07d | 208 | |
264827cb DT |
209 | if ((lp->resize == LV_REDUCE) && |
210 | (type_str || | |
211 | arg_is_set(cmd, mirrors_ARG) || | |
212 | arg_is_set(cmd, stripes_ARG) || | |
213 | arg_is_set(cmd, stripesize_ARG))) { | |
214 | /* should be obvious since reduce doesn't alloc space. */ | |
215 | log_print_unless_silent("Ignoring type, stripes, stripesize and mirrors " | |
216 | "arguments when reducing."); | |
217 | goto out; | |
218 | } | |
219 | ||
87c89ac2 ZK |
220 | if (arg_is_set(cmd, mirrors_ARG)) { |
221 | if (arg_sign_value(cmd, mirrors_ARG, SIGN_NONE) != SIGN_NONE) { | |
222 | log_error("Mirrors argument may not be signed."); | |
223 | return 0; | |
224 | } | |
225 | if ((lp->mirrors = arg_uint_value(cmd, mirrors_ARG, 0))) | |
226 | lp->mirrors++; | |
9d550cfc TA |
227 | } |
228 | ||
f45b6894 ZK |
229 | if ((lp->stripes = arg_uint_value(cmd, stripes_ARG, 0)) && |
230 | (arg_sign_value(cmd, stripes_ARG, SIGN_NONE) == SIGN_MINUS)) { | |
231 | log_error("Stripes argument may not be negative."); | |
232 | return 0; | |
9d550cfc TA |
233 | } |
234 | ||
7a9efc5f ZK |
235 | if (only_linear && lp->stripes > 1) { |
236 | log_error("Cannot use stripes with linear type."); | |
237 | return 0; | |
238 | } | |
239 | ||
f45b6894 ZK |
240 | if ((lp->stripe_size = arg_uint64_value(cmd, stripesize_ARG, 0)) && |
241 | (arg_sign_value(cmd, stripesize_ARG, SIGN_NONE) == SIGN_MINUS)) { | |
242 | log_error("Stripesize may not be negative."); | |
243 | return 0; | |
9d550cfc | 244 | } |
264827cb | 245 | out: |
241913fe AK |
246 | return 1; |
247 | } | |
7d0e6e80 | 248 | |
18722dfd DT |
249 | /* |
250 | * lvextend --use-policies is usually called by dmeventd, as a method of | |
251 | * "auto extending" an LV as it's used. It checks how full a snapshot cow or | |
252 | * thin pool is, and extends it if it's too full, based on threshold settings | |
253 | * in lvm.conf for when to auto extend it. | |
254 | * | |
255 | * The extension of a thin pool LV can involve extending either the data sub | |
256 | * LV, the metadata sub LV, or both, so there may be two LVs extended here. | |
257 | */ | |
258 | static int _lv_extend_policy(struct cmd_context *cmd, struct logical_volume *lv, | |
259 | struct lvresize_params *lp, int *skipped) | |
241913fe | 260 | { |
18722dfd DT |
261 | uint32_t percent_main = 0; |
262 | uint32_t percent_meta = 0; | |
263 | int is_active; | |
264 | ||
a2b2ae35 ZK |
265 | if (lv_is_cow(lv)) |
266 | is_active = lv_is_active(lv); | |
267 | else if (lv_is_thin_pool(lv) || lv_is_vdo_pool(lv)) | |
268 | /* check for -layer active LV */ | |
269 | is_active = lv_info(lv->vg->cmd, lv, 1, NULL, 0, 0); | |
270 | else { | |
18722dfd | 271 | log_error("lvextend policy is supported only for snapshot, thin pool and vdo pool volumes."); |
18722dfd DT |
272 | return 0; |
273 | } | |
274 | ||
a2b2ae35 ZK |
275 | if (!is_active) { |
276 | log_error("lvextend using policy requires the volume to be active."); | |
18722dfd | 277 | return 0; |
0ba5571b | 278 | } |
7c6526aa | 279 | |
18722dfd DT |
280 | /* |
281 | * Calculate the percent of extents to extend the LV based on current | |
282 | * usage info from the kernel and policy settings from lvm.conf, e.g. | |
283 | * autoextend_threshold, autoextend_percent. For thin pools, both the | |
284 | * thin pool data LV and thin pool metadata LV may need to be extended. | |
285 | * In this case, percent_main is the amount to extend the data LV, and | |
286 | * percent_meta is the amount to extend the metadata LV. | |
287 | */ | |
288 | if (!lv_extend_policy_calculate_percent(lv, &percent_main, &percent_meta)) | |
289 | return_0; | |
290 | ||
291 | if (!percent_main && !percent_meta) { | |
292 | log_debug("lvextend policy not needed."); | |
293 | *skipped = 1; | |
294 | return 1; | |
295 | } | |
7c6526aa | 296 | |
18722dfd DT |
297 | *skipped = 0; |
298 | lp->policy_percent_main = percent_main; | |
299 | lp->policy_percent_meta = percent_meta; | |
300 | ||
301 | return lv_resize(cmd, lv, lp); | |
302 | } | |
303 | ||
304 | static int _lvextend_policy_single(struct cmd_context *cmd, struct logical_volume *lv, | |
305 | struct processing_handle *handle) | |
306 | { | |
307 | struct lvresize_params *lp = (struct lvresize_params *) handle->custom_handle; | |
308 | int skipped = 0; | |
309 | ||
310 | if (cmd->position_argc > 1) { | |
311 | /* First pos arg is required LV, remaining are optional PVs. */ | |
312 | if (!(lp->pvh = create_pv_list(cmd->mem, lv->vg, cmd->position_argc - 1, cmd->position_argv + 1, 0))) | |
313 | return_ECMD_FAILED; | |
314 | } else | |
315 | lp->pvh = &lv->vg->pvs; | |
316 | ||
317 | if (!_lv_extend_policy(cmd, lv, lp, &skipped)) | |
318 | return ECMD_FAILED; | |
319 | ||
320 | if (!skipped) | |
321 | log_print_unless_silent("Logical volume %s successfully resized.", display_lvname(lv)); | |
322 | return ECMD_PROCESSED; | |
323 | } | |
324 | ||
325 | static int _lvresize_single(struct cmd_context *cmd, struct logical_volume *lv, | |
326 | struct processing_handle *handle) | |
327 | { | |
328 | struct lvresize_params *lp = (struct lvresize_params *) handle->custom_handle; | |
264827cb | 329 | int ret; |
18722dfd DT |
330 | |
331 | if (cmd->position_argc > 1) { | |
332 | /* First pos arg is required LV, remaining are optional PVs. */ | |
333 | if (!(lp->pvh = create_pv_list(cmd->mem, lv->vg, cmd->position_argc - 1, cmd->position_argv + 1, 0))) | |
334 | return_ECMD_FAILED; | |
335 | } else | |
336 | lp->pvh = &lv->vg->pvs; | |
337 | ||
264827cb | 338 | ret = lv_resize(cmd, lv, lp); |
18722dfd | 339 | |
264827cb DT |
340 | if (ret || lp->extend_fs_error) |
341 | log_print_unless_silent("Logical volume %s successfully resized.", | |
342 | display_lvname(lv)); | |
343 | if (!ret) | |
344 | return ECMD_FAILED; | |
18722dfd DT |
345 | return ECMD_PROCESSED; |
346 | } | |
347 | ||
348 | int lvextend_policy_cmd(struct cmd_context *cmd, int argc, char **argv) | |
349 | { | |
350 | struct processing_handle *handle; | |
351 | struct lvresize_params lp; | |
352 | int ret; | |
353 | ||
354 | if (!_lvresize_params(cmd, &lp)) | |
355 | return EINVALID_CMD_LINE; | |
356 | ||
357 | if (!(handle = init_processing_handle(cmd, NULL))) | |
358 | return ECMD_FAILED; | |
359 | ||
360 | handle->custom_handle = &lp; | |
361 | ||
362 | ret = process_each_lv(cmd, 1, cmd->position_argv, NULL, NULL, READ_FOR_UPDATE, | |
363 | handle, NULL, &_lvextend_policy_single); | |
364 | ||
365 | destroy_processing_handle(cmd, handle); | |
7c6526aa | 366 | |
67763a9b DT |
367 | return ret; |
368 | } | |
369 | ||
18722dfd | 370 | int lvresize_cmd(struct cmd_context *cmd, int argc, char **argv) |
67763a9b | 371 | { |
5a32d2c1 | 372 | struct processing_handle *handle; |
18722dfd | 373 | struct lvresize_params lp; |
264827cb | 374 | int retries = 0; |
9b92cb27 | 375 | int ret; |
67763a9b | 376 | |
18722dfd | 377 | if (!_lvresize_params(cmd, &lp)) |
67763a9b DT |
378 | return EINVALID_CMD_LINE; |
379 | ||
18722dfd | 380 | if (!(handle = init_processing_handle(cmd, NULL))) |
67763a9b | 381 | return ECMD_FAILED; |
67763a9b DT |
382 | |
383 | handle->custom_handle = &lp; | |
384 | ||
264827cb | 385 | retry: |
18722dfd DT |
386 | ret = process_each_lv(cmd, 1, cmd->position_argv, NULL, NULL, READ_FOR_UPDATE, |
387 | handle, NULL, &_lvresize_single); | |
241913fe | 388 | |
264827cb DT |
389 | /* |
390 | * The VG can be changed by another command while it is unlocked | |
391 | * during fs resize. The fs steps likely succeeded, and this | |
392 | * retry will likely find that no more fs steps are needed, and | |
393 | * will resize the LV directly. | |
394 | */ | |
395 | if (lp.vg_changed_error && !retries) { | |
396 | lp.vg_changed_error = 0; | |
397 | retries = 1; | |
398 | goto retry; | |
399 | } else if (lp.vg_changed_error && retries) { | |
400 | log_error("VG changed during file system resize, LV not resized."); | |
401 | ret = ECMD_FAILED; | |
402 | } | |
403 | ||
67763a9b | 404 | destroy_processing_handle(cmd, handle); |
5a32d2c1 | 405 | |
85e68a83 DT |
406 | if (lp.lockd_lv_refresh_path && !lockd_lv_refresh(cmd, &lp)) |
407 | ret = ECMD_FAILED; | |
408 | ||
67763a9b | 409 | return ret; |
241913fe | 410 | } |
18722dfd DT |
411 | |
412 | /* | |
413 | * All lvresize command defs have their own function, | |
414 | * so the generic function name is unused. | |
415 | */ | |
416 | ||
417 | int lvresize(struct cmd_context *cmd, int argc, char **argv) | |
418 | { | |
419 | log_error(INTERNAL_ERROR "Missing function for command definition %d:%s.", | |
bebbb1e6 | 420 | cmd->command->command_index, command_enum(cmd->command->command_enum)); |
18722dfd DT |
421 | return ECMD_FAILED; |
422 | } | |
423 |