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Code Releases Activity

report: query lvmlockd for lv_active_exclusively

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Query LV lock state in lvmlockd to report lv_active_exclusively
for active LVs in a shared VGs.  As with all lvmlockd state,
it is from the perspective of the local node.

Signed-off-by: corubba <corubba@gmx.de>
This commit is contained in:
corubba 2022-11-01 22:23:47 +01:00 committed by David Teigland
parent 779fc3c045
commit e0ea0706dc
3 changed files with 28 additions and 5 deletions
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14
lib/locking/lvmlockd.c
View File

@ -2298,9 +2298,8 @@ int lockd_vg_update(struct volume_group *vg)
return ret;
}
static int _query_lock_lv(struct cmd_context *cmd, struct volume_group *vg,
const char *lv_name, char *lv_uuid,
const char *lock_args, int *ex, int *sh)
int lockd_query_lv(struct volume_group *vg, const char *lv_name, char *lv_uuid,
const char *lock_args, int *ex, int *sh)
{
daemon_reply reply;
const char *opts = NULL;
@ -2308,6 +2307,13 @@ static int _query_lock_lv(struct cmd_context *cmd, struct volume_group *vg,
int result;
int ret;
if (!vg_is_shared(vg))
return 1;
if (!_use_lvmlockd)
return 0;
if (!_lvmlockd_connected)
return 0;
log_debug("lockd query LV %s/%s", vg->name, lv_name);
reply = _lockd_send("query_lock_lv",
@ -2386,7 +2392,7 @@ int lockd_lv_name(struct cmd_context *cmd, struct volume_group *vg,
!strcmp(cmd->name, "lvchange") || !strcmp(cmd->name, "lvconvert")) {
int ex = 0, sh = 0;
if (!_query_lock_lv(cmd, vg, lv_name, lv_uuid, lock_args, &ex, &sh))
if (!lockd_query_lv(vg, lv_name, lv_uuid, lock_args, &ex, &sh))
return 1;
if (sh) {
log_warn("WARNING: shared LV may require refresh on other hosts where it is active.");

9
lib/locking/lvmlockd.h
View File

@ -103,6 +103,9 @@ int lockd_lv_uses_lock(struct logical_volume *lv);
int lockd_lv_refresh(struct cmd_context *cmd, struct lvresize_params *lp);
int lockd_query_lv(struct volume_group *vg, const char *lv_name, char *lv_uuid,
const char *lock_args, int *ex, int *sh);
#else /* LVMLOCKD_SUPPORT */
static inline void lvmlockd_set_socket(const char *sock)
@ -258,6 +261,12 @@ static inline int lockd_lv_refresh(struct cmd_context *cmd, struct lvresize_para
return 0;
}
static inline int lockd_query_lv(struct volume_group *vg, const char *lv_name,
char *lv_uuid, const char *lock_args, int *ex, int *sh)
{
return 0;
}
#endif /* LVMLOCKD_SUPPORT */
#endif /* _LVMLOCKD_H */

10
lib/report/report.c
View File

@ -24,6 +24,7 @@
#include "lib/cache/lvmcache.h"
#include "lib/device/device-types.h"
#include "lib/datastruct/str_list.h"
#include "lib/locking/lvmlockd.h"
#include <stddef.h> /* offsetof() */
#include <float.h> /* DBL_MAX */
@ -3854,13 +3855,20 @@ static int _lvactiveexclusively_disp(struct dm_report *rh, struct dm_pool *mem,
const void *data, void *private)
{
const struct logical_volume *lv = (const struct logical_volume *) data;
int active_exclusively;
int active_exclusively, _sh = 0;
if (!activation())
return _binary_undef_disp(rh, mem, field, private);
active_exclusively = lv_is_active(lv);
if (active_exclusively && vg_is_shared(lv->vg)) {
active_exclusively = 0;
if (!lockd_query_lv(lv->vg, lv->name, lv_uuid_dup(NULL, lv),
lv->lock_args, &active_exclusively, &_sh))
return _binary_undef_disp(rh, mem, field, private);
}
return _binary_disp(rh, mem, field, active_exclusively, GET_FIRST_RESERVED_NAME(lv_active_exclusively_y), private);
}