Gitweb: http://git.fedorahosted.org/git/?p=lvm2.git;a=commitdiff;h=58713d34dd71873ab... Commit: 58713d34dd71873ab97378e96d7ab0b8e9bda8ef Parent: 32e22a00378192f226932258d9c5b55b073b4528 Author: David Teigland teigland@redhat.com AuthorDate: Wed Aug 26 14:55:27 2015 -0500 Committer: David Teigland teigland@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
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