Gitweb:
http://git.fedorahosted.org/git/?p=lvm2.git;a=commitdiff;h=58713d34dd7187...
Commit: 58713d34dd71873ab97378e96d7ab0b8e9bda8ef
Parent: 32e22a00378192f226932258d9c5b55b073b4528
Author: David Teigland <teigland(a)redhat.com>
AuthorDate: Wed Aug 26 14:55:27 2015 -0500
Committer: David Teigland <teigland(a)redhat.com>
CommitterDate: Thu Aug 27 10:27:24 2015 -0500
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.
---
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 3d41bd2..ac2d224 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