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metadata: Make it possible to write partial VGs obtained from lvmetad.

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This commit is contained in:
Petr Rockai 2014-05-26 14:23:33 +02:00
parent 943f3aec3d
commit dba6dec661
2 changed files with 30 additions and 20 deletions
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33
lib/metadata/metadata.c
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@ -2613,6 +2613,7 @@ int vg_write(struct volume_group *vg)
struct dm_list *mdah;
struct pv_to_create *pv_to_create;
struct metadata_area *mda;
int revert = 0, wrote = 0;
if (!vg_validate(vg))
return_0;
@ -2665,20 +2666,23 @@ int vg_write(struct volume_group *vg)
if (!mda->ops->vg_write) {
log_error("Format does not support writing volume"
"group metadata areas");
/* Revert */
dm_list_uniterate(mdah, &vg->fid->metadata_areas_in_use, &mda->list) {
mda = dm_list_item(mdah, struct metadata_area);
if (mda->ops->vg_revert &&
!mda->ops->vg_revert(vg->fid, vg, mda)) {
stack;
}
}
return 0;
revert = 1;
break;
}
if (!mda->ops->vg_write(vg->fid, vg, mda)) {
if (vg->cmd->handles_missing_pvs) {
log_warn("WARNING: Failed to write an MDA of VG %s.", vg->name);
mda->status |= MDA_FAILED;
} else {
stack;
/* Revert */
revert = 1;
break;
}
} else
++ wrote;
}
if (revert || !wrote) {
dm_list_uniterate(mdah, &vg->fid->metadata_areas_in_use, &mda->list) {
mda = dm_list_item(mdah, struct metadata_area);
@ -2689,15 +2693,18 @@ int vg_write(struct volume_group *vg)
}
return 0;
}
}
/* Now pre-commit each copy of the new metadata */
dm_list_iterate_items(mda, &vg->fid->metadata_areas_in_use) {
if (mda->status & MDA_FAILED)
continue;
if (mda->ops->vg_precommit &&
!mda->ops->vg_precommit(vg->fid, vg, mda)) {
stack;
/* Revert */
dm_list_iterate_items(mda, &vg->fid->metadata_areas_in_use) {
if (mda->status & MDA_FAILED)
continue;
if (mda->ops->vg_revert &&
!mda->ops->vg_revert(vg->fid, vg, mda)) {
stack;
@ -2738,6 +2745,8 @@ static int _vg_commit_mdas(struct volume_group *vg)
/* Commit to each copy of the metadata area */
dm_list_iterate_items(mda, &vg->fid->metadata_areas_in_use) {
if (mda->status & MDA_FAILED)
continue;
failed = 0;
if (mda->ops->vg_commit &&
!mda->ops->vg_commit(vg->fid, vg, mda)) {

1
lib/metadata/metadata.h
View File

@ -154,6 +154,7 @@ struct metadata_area_ops {
#define MDA_IGNORED 0x00000001
#define MDA_INCONSISTENT 0x00000002
#define MDA_FAILED 0x00000004
struct metadata_area {
struct dm_list list;