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When asked to drop cached committed VG metadata, invalidate cached PV labels.

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This commit is contained in:
Alasdair Kergon 2008-05-08 18:28:27 +00:00
parent d9c0105fef
commit 3835ad6b1c
2 changed files with 28 additions and 1 deletions
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1
WHATS_NEW
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@ -5,6 +5,7 @@ Version 2.02.38 -
Version 2.02.37 -
=================================
When asked to drop cached committed VG metadata, invalidate cached PV labels.
Drop metadata cache before writing precommitted metadata instead of after.
Don't touch /dev in vgrename if activation is disabled.

28
lib/cache/lvmcache.c vendored
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@ -22,6 +22,9 @@
#include "filter.h"
#include "memlock.h"
#include "str_list.h"
#include "format-text.h"
#include "format_pool.h"
#include "format1.h"
static struct dm_hash_table *_pvid_hash = NULL;
static struct dm_hash_table *_vgid_hash = NULL;
@ -130,16 +133,39 @@ static void _update_cache_lock_state(const char *vgname, int locked)
_update_cache_vginfo_lock_state(vginfo, locked);
}
void lvmcache_drop_metadata(const char *vgname)
static void _drop_metadata(const char *vgname)
{
struct lvmcache_vginfo *vginfo;
struct lvmcache_info *info;
if (!(vginfo = vginfo_from_vgname(vgname, NULL)))
return;
/*
* Invalidate cached PV labels.
* If cached precommitted metadata exists that means we
* already invalidated the PV labels (before caching it)
* and we must not do it again.
*/
if (!vginfo->precommitted)
list_iterate_items(info, &vginfo->infos)
info->status |= CACHE_INVALID;
_free_cached_vgmetadata(vginfo);
}
void lvmcache_drop_metadata(const char *vgname)
{
/* For VG_ORPHANS, we need to invalidate all labels on orphan PVs. */
if (strcmp(vgname, VG_ORPHANS)) {
_drop_metadata(FMT_TEXT_ORPHAN_VG_NAME);
_drop_metadata(FMT_LVM1_ORPHAN_VG_NAME);
_drop_metadata(FMT_POOL_ORPHAN_VG_NAME);
} else
_drop_metadata(vgname);
}
void lvmcache_lock_vgname(const char *vgname, int read_only __attribute((unused)))
{
if (!_lock_hash && !lvmcache_init()) {