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metadata: add find_historical_glv fn

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The find_historical_glv is helper function that looks up historical
LV in struct volume_group's historical_lvs list and returns it if
found.
This commit is contained in:
Peter Rajnoha 2016-03-01 15:21:21 +01:00
parent a0842d1f25
commit c45af2df4e
2 changed files with 31 additions and 0 deletions
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5
lib/metadata/metadata-exported.h
View File

@ -1026,6 +1026,11 @@ struct lv_list *find_lv_in_vg(const struct volume_group *vg,
/* FIXME Merge these functions with ones above */
struct logical_volume *find_lv(const struct volume_group *vg,
const char *lv_name);
struct generic_logical_volume *find_historical_glv(const struct volume_group *vg,
const char *historical_lv_name,
struct glv_list **glvl_found);
struct physical_volume *find_pv_by_name(struct cmd_context *cmd,
const char *pv_name,
int allow_orphan, int allow_unformatted);

26
lib/metadata/metadata.c
View File

@ -2120,6 +2120,32 @@ struct logical_volume *find_lv(const struct volume_group *vg,
return lvl ? lvl->lv : NULL;
}
struct generic_logical_volume *find_historical_glv(const struct volume_group *vg,
const char *historical_lv_name,
struct glv_list **glvl_found)
{
struct glv_list *glvl;
const char *ptr;
/* Use last component */
if ((ptr = strrchr(historical_lv_name, '/')))
ptr++;
else
ptr = historical_lv_name;
dm_list_iterate_items(glvl, &vg->historical_lvs) {
if (!strcmp(glvl->glv->historical->name, ptr)) {
if (glvl_found)
*glvl_found = glvl;
return glvl->glv;
}
}
if (glvl_found)
*glvl_found = NULL;
return NULL;
}
struct physical_volume *find_pv(struct volume_group *vg, struct device *dev)
{
struct pv_list *pvl;