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Add further consistency checking to vg_validate, ensuring that all segment

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areas point to LVs or PVs that are listed in the respective VG.
This commit is contained in:
Petr Rockai 2010-12-14 17:51:09 +00:00
parent d6d4e462a4
commit ebfe96cad5
3 changed files with 65 additions and 0 deletions
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60
lib/metadata/metadata.c
View File

@ -2153,6 +2153,61 @@ void lv_calculate_readahead(const struct logical_volume *lv, uint32_t *read_ahea
}
}
/*
* Check that an LV and all its PV references are correctly listed in vg->lvs
* and vg->pvs, respectively. This only looks at a single LV, but *not* at the
* LVs it is using. To do the latter, you should use _lv_postorder with this
* function. C.f. vg_validate.
*/
static int _lv_validate_references_single(struct logical_volume *lv, void *data)
{
struct volume_group *vg = lv->vg;
struct lv_segment *lvseg;
struct pv_list *pvl;
struct lv_list *lvl;
int s;
int r = 1;
int ok = 0;
dm_list_iterate_items(lvl, &vg->lvs) {
if (lvl->lv == lv) {
ok = 1;
break;
}
}
if (!ok) {
log_error(INTERNAL_ERROR
"Referenced LV %s not listed in VG %s.",
lv->name, vg->name);
r = 0;
}
dm_list_iterate_items(lvseg, &lv->segments) {
for (s = 0; s < lvseg->area_count; ++s) {
if (seg_type(lvseg, s) == AREA_PV) {
ok = 0;
/* look up the reference in vg->pvs */
dm_list_iterate_items(pvl, &vg->pvs) {
if (pvl->pv == seg_pv(lvseg, s)) {
ok = 1;
break;
}
}
if (!ok) {
log_error(INTERNAL_ERROR
"Referenced PV %s not listed in VG %s.",
pv_dev_name(seg_pv(lvseg, s)), vg->name);
r = 0;
}
}
}
}
return r;
}
int vg_validate(struct volume_group *vg)
{
struct pv_list *pvl, *pvl2;
@ -2319,6 +2374,11 @@ int vg_validate(struct volume_group *vg)
}
}
dm_list_iterate_items(lvl, &vg->lvs) {
if (!_lv_postorder(lvl->lv, _lv_validate_references_single, NULL))
r = 0;
}
dm_list_iterate_items(lvl, &vg->lvs) {
if (!(lvl->lv->status & PVMOVE))
continue;

4
tools/vgmerge.c
View File

@ -114,6 +114,10 @@ static int _vgmerge_single(struct cmd_context *cmd, const char *vg_name_to,
}
}
dm_list_iterate_items(lvl1, &vg_from->lvs) {
lvl1->lv->vg = vg_to;
}
while (!dm_list_empty(&vg_from->lvs)) {
struct dm_list *lvh = vg_from->lvs.n;

1
tools/vgsplit.c
View File

@ -34,6 +34,7 @@ static int _move_one_lv(struct volume_group *vg_from,
struct logical_volume *lv = dm_list_item(lvh, struct lv_list)->lv;
dm_list_move(&vg_to->lvs, lvh);
lv->vg = vg_to;
if (lv_is_active(lv)) {
log_error("Logical volume \"%s\" must be inactive", lv->name);