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| author | David Teigland <teigland@redhat.com> | 2015-08-26 14:55:27 -0500 |
|---|---|---|
| committer | David Teigland <teigland@redhat.com> | 2015-08-27 10:27:24 -0500 |
| commit | 58713d34dd71873ab97378e96d7ab0b8e9bda8ef (patch) | |
| tree | 23925c976fdc5f1310d68255af762258ada3518d | |
| parent | 32e22a00378192f226932258d9c5b55b073b4528 (diff) | |
| download | lvm2-58713d34dd71873ab97378e96d7ab0b8e9bda8ef.tar.gz | |
lvmlockd: detect when dlm lvb is invalidated
The lvb content can be lost during dlm recovery,
and we need to detect when this happens to revalidate.
| -rw-r--r-- | daemons/lvmlockd/lvmlockd-core.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/daemons/lvmlockd/lvmlockd-core.c b/daemons/lvmlockd/lvmlockd-core.c index 3d41bd2b4..ac2d224c6 100644 --- a/daemons/lvmlockd/lvmlockd-core.c +++ b/daemons/lvmlockd/lvmlockd-core.c @@ -1057,7 +1057,18 @@ static int res_lock(struct lockspace *ls, struct resource *r, struct action *act /* lm_lock() reads new r_version */ - if ((r_version > r->version) || (!r->version && !r->version_zero_valid)) { + if ((r_version != r->version) || (!r->version && !r->version_zero_valid)) { + + /* + * r_version only increases, so if it goes down, it means the + * dlm lvb became invalid (happens during recovery if the + * resource master leaves). + */ + if (r_version < r->version) { + log_debug("S %s R %s res_lock lvb invalid r_version %u prev %u", + ls->name, r->name, r_version, r->version); + } + /* * New r_version of the lock: means that another * host has changed data protected by this lock |