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Code Releases Activity

o Added function find_snapshots to snapshot_manip.c that returns a list

Browse Source 
of snapshots whose origin is the lv passed in.
 o Used this new function to make lvdisplay properly display all snapshots
   attached to a origin.
This commit is contained in:
AJ Lewis 2002-05-08 16:57:46 +00:00
parent 0474ad51c2
commit fccc39a3a7
3 changed files with 44 additions and 5 deletions
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15
lib/display/display.c
View File

@ -247,12 +247,17 @@ int lvdisplay_full(struct cmd_context *cmd, struct logical_volume *lv)
log_print("LV Write Access %s",
(lv->status & LVM_WRITE) ? "read/write" : "read only");
/* see if this LV is an origina for a snapshot */
/* see if this LV is an origin for a snapshot */
if ((snap = find_origin(lv))) {
log_print("LV snapshot status source of");
log_print(" %s%s/%s [%s]",
lv->vg->cmd->dev_dir, lv->vg->name, snap->cow->name,
"active");
struct list *slh, *snaplist = find_snapshots(lv);
list_iterate(slh, snaplist) {
snap = list_item(slh, struct snapshot_list)->snapshot;
log_print("LV snapshot status source of");
log_print(" %s%s/%s [%s]",
lv->vg->cmd->dev_dir, lv->vg->name,
snap->cow->name, "active");
}
/* reset so we don't try to use this to display other snapshot
* related information. */
snap = NULL;

1
lib/metadata/metadata.h
View File

@ -394,6 +394,7 @@ int lv_is_cow(struct logical_volume *lv);
struct snapshot *find_cow(struct logical_volume *lv);
struct snapshot *find_origin(struct logical_volume *lv);
struct list *find_snapshots(struct logical_volume *lv);
int vg_add_snapshot(struct logical_volume *origin,
struct logical_volume *cow,

33
lib/metadata/snapshot_manip.c
View File

@ -64,6 +64,39 @@ struct snapshot *find_cow(struct logical_volume *lv)
return NULL;
}
struct list *find_snapshots(struct logical_volume *lv)
{
struct list *slh;
struct list *snaplist;
struct snapshot_list *sl, *newsl;
struct pool *mem = lv->vg->cmd->mem;
if (!(snaplist = pool_alloc(mem, sizeof(*snaplist)))) {
log_error("snapshot name list allocation failed");
return NULL;
}
list_init(snaplist);
list_iterate(slh, &lv->vg->snapshots) {
sl = list_item(slh, struct snapshot_list);
if (sl->snapshot->origin == lv) {
if(!(newsl = pool_alloc(mem, sizeof(*newsl)))) {
log_error("snapshot_list structure allocation"
" failed");
pool_free(mem, snaplist);
return NULL;
}
newsl->snapshot = sl->snapshot;
list_add(snaplist, &newsl->list);
}
}
return snaplist;
return NULL;
}
int vg_add_snapshot(struct logical_volume *origin,
struct logical_volume *cow,
int persistent, uint32_t chunk_size)