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metadata: Fix metadata repair paths when lvmetad is used.

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This commit is contained in:
Petr Rockai 2013-10-09 14:04:47 +02:00
parent fbb6de845e
commit 0decd7553a
3 changed files with 50 additions and 31 deletions
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2
lib/cache/lvmetad.c vendored
View File

@ -392,8 +392,6 @@ struct volume_group *lvmetad_vg_lookup(struct cmd_context *cmd, const char *vgna
pvl->pv->dev = lvmcache_device(info);
if (!pvl->pv->dev)
pvl->pv->status |= MISSING_PV;
else
check_reappeared_pv(vg, pvl->pv);
if (!lvmcache_fid_add_mdas_pv(info, fid)) {
vg = NULL;
goto_out; /* FIXME error path */

76
lib/metadata/metadata.c
View File

@ -2883,10 +2883,11 @@ int vg_missing_pv_count(const struct volume_group *vg)
return ret;
}
void check_reappeared_pv(struct volume_group *correct_vg,
struct physical_volume *pv)
static int _check_reappeared_pv(struct volume_group *correct_vg,
struct physical_volume *pv, int act)
{
struct pv_list *pvl;
int rv = 0;
/*
* Skip these checks in case the tool is going to deal with missing
@ -2894,21 +2895,47 @@ void check_reappeared_pv(struct volume_group *correct_vg,
* confusing.
*/
if (correct_vg->cmd->handles_missing_pvs)
return;
return rv;
dm_list_iterate_items(pvl, &correct_vg->pvs)
if (pv->dev == pvl->pv->dev && is_missing_pv(pvl->pv)) {
log_warn("Missing device %s reappeared, updating "
"metadata for VG %s to version %u.",
pv_dev_name(pvl->pv), pv_vg_name(pvl->pv),
correct_vg->seqno);
if (act)
log_warn("Missing device %s reappeared, updating "
"metadata for VG %s to version %u.",
pv_dev_name(pvl->pv), pv_vg_name(pvl->pv),
correct_vg->seqno);
if (pvl->pv->pe_alloc_count == 0) {
pv->status &= ~MISSING_PV;
pvl->pv->status &= ~MISSING_PV;
} else
if (act) {
pv->status &= ~MISSING_PV;
pvl->pv->status &= ~MISSING_PV;
}
++ rv;
} else if (act)
log_warn("Device still marked missing because of allocated data "
"on it, remove volumes and consider vgreduce --removemissing.");
}
return rv;
}
static int _repair_inconsistent_vg(struct volume_group *vg)
{
unsigned saved_handles_missing_pvs = vg->cmd->handles_missing_pvs;
vg->cmd->handles_missing_pvs = 1;
if (!vg_write(vg)) {
log_error("Automatic metadata correction failed");
vg->cmd->handles_missing_pvs = saved_handles_missing_pvs;
return 0;
}
vg->cmd->handles_missing_pvs = saved_handles_missing_pvs;
if (!vg_commit(vg)) {
log_error("Automatic metadata correction commit failed");
return 0;
}
return 1;
}
static int _check_mda_in_use(struct metadata_area *mda, void *_in_use)
@ -2951,12 +2978,12 @@ static struct volume_group *_vg_read(struct cmd_context *cmd,
int inconsistent_mdas = 0;
int inconsistent_mda_count = 0;
unsigned use_precommitted = precommitted;
unsigned saved_handles_missing_pvs = cmd->handles_missing_pvs;
struct dm_list *pvids;
struct pv_list *pvl, *pvl2;
struct dm_list all_pvs;
char uuid[64] __attribute__((aligned(8)));
unsigned seqno = 0;
int reappeared = 0;
if (is_orphan_vg(vgname)) {
if (use_precommitted) {
@ -2969,8 +2996,16 @@ static struct volume_group *_vg_read(struct cmd_context *cmd,
}
if (lvmetad_active() && !use_precommitted) {
*consistent = 1;
return lvmcache_get_vg(cmd, vgname, vgid, precommitted);
if ((correct_vg = lvmcache_get_vg(cmd, vgname, vgid, precommitted))) {
dm_list_iterate_items(pvl, &correct_vg->pvs)
if (pvl->pv->dev)
reappeared += _check_reappeared_pv(correct_vg, pvl->pv, *consistent);
if (reappeared && *consistent)
*consistent = _repair_inconsistent_vg(correct_vg);
else
*consistent = !reappeared;
}
return correct_vg;
}
/*
@ -3339,22 +3374,11 @@ static struct volume_group *_vg_read(struct cmd_context *cmd,
* update metadata and remove MISSING flag
*/
dm_list_iterate_items(pvl, &all_pvs)
check_reappeared_pv(correct_vg, pvl->pv);
_check_reappeared_pv(correct_vg, pvl->pv, 1);
cmd->handles_missing_pvs = 1;
if (!vg_write(correct_vg)) {
log_error("Automatic metadata correction failed");
if (!_repair_inconsistent_vg(correct_vg)) {
_free_pv_list(&all_pvs);
release_vg(correct_vg);
cmd->handles_missing_pvs = saved_handles_missing_pvs;
return NULL;
}
cmd->handles_missing_pvs = saved_handles_missing_pvs;
if (!vg_commit(correct_vg)) {
log_error("Automatic metadata correction commit "
"failed");
release_vg(correct_vg);
return NULL;
}

3
lib/metadata/metadata.h
View File

@ -486,7 +486,4 @@ int add_pv_to_vg(struct volume_group *vg, const char *pv_name,
uint64_t find_min_mda_size(struct dm_list *mdas);
char *tags_format_and_copy(struct dm_pool *mem, const struct dm_list *tags);
void check_reappeared_pv(struct volume_group *correct_vg,
struct physical_volume *pv);
#endif