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Code Releases Activity

more cleanup

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This commit is contained in:
Alasdair Kergon 2008-05-09 19:26:58 +00:00
parent 98fd1ce332
commit 3dfd8f12dc
4 changed files with 22 additions and 9 deletions
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2
daemons/clvmd/clvmd-command.c
View File

@ -119,7 +119,7 @@ int do_command(struct local_client *client, struct clvm_header *msg, int msglen,
/* Check to see if the VG is in use by LVM1 */
status = do_check_lvm1(lockname);
/* P_#global causes a full cache refresh */
if (!strcmp(lockname, "P_#global"))
if (!strcmp(lockname, "P_" VG_GLOBAL))
do_refresh_cache();
else
drop_metadata(lockname + 2);

4
daemons/clvmd/lvm-functions.c
View File

@ -472,8 +472,8 @@ static void drop_vg_locks()
popen
("lvm pvs --config 'log{command_names=0 prefix=\"\"}' --nolocking --noheadings -o vg_name", "r");
sync_unlock("P_#orphans", LCK_EXCL);
sync_unlock("P_#global", LCK_EXCL);
sync_unlock("P_" VG_ORPHANS, LCK_EXCL);
sync_unlock("P_" VG_GLOBAL, LCK_EXCL);
if (!vgs)
return;

8
lib/locking/file_locking.c
View File

@ -210,10 +210,14 @@ static int _file_lock_resource(struct cmd_context *cmd, const char *resource,
switch (flags & LCK_SCOPE_MASK) {
case LCK_VG:
if (flags & LCK_CACHE) {
/* Skip cache refresh for VG_GLOBAL - the caller handles it */
if (strcmp(resource, VG_GLOBAL))
lvmcache_drop_metadata(resource);
/* LCK_CACHE does not require a real lock */
if (flags & LCK_CACHE)
break;
}
if (*resource == '#')
dm_snprintf(lockfile, sizeof(lockfile),
"%s/P_%s", _lock_dir, resource + 1);

17
lib/locking/locking.h
View File

@ -27,9 +27,11 @@ int locking_is_clustered(void);
/*
* LCK_VG:
* Lock/unlock on-disk volume group data
* Use VG_ORPHANS to lock orphan PVs
* char *vol holds volume group name
* Lock/unlock on-disk volume group data.
* Use VG_ORPHANS to lock all orphan PVs.
* Use VG_GLOBAL as a global lock and to wipe the internal cache.
* char *vol holds volume group name.
* Set the LCK_CACHE flag to invalidate 'vol' in the internal cache.
*
* LCK_LV:
* Lock/unlock an individual logical volume
@ -37,6 +39,13 @@ int locking_is_clustered(void);
*/
int lock_vol(struct cmd_context *cmd, const char *vol, uint32_t flags);
/*
* Internal locking representation.
* LCK_VG: Uses prefix V_ unless the vol begins with # (i.e. #global or #orphans)
* or the LCK_CACHE flag is set when it uses the prefix P_.
* If LCK_CACHE is set, we do not take out a real lock.
*/
/*
* Does the LVM1 driver have this VG active?
*/
@ -69,7 +78,7 @@ int check_lvm1_vg_inactive(struct cmd_context *cmd, const char *vgname);
#define LCK_HOLD 0x00000020U /* Hold lock when lock_vol returns? */
#define LCK_LOCAL 0x00000040U /* Don't propagate to other nodes */
#define LCK_CLUSTER_VG 0x00000080U /* VG is clustered */
#define LCK_CACHE 0x00000100U /* Operation on cache using P_ lock */
#define LCK_CACHE 0x00000100U /* Operation on cache only using P_ lock */
/*
* Additional lock bits for cluster communication