shaba/lvm2
1
0
Fork 0
mirror of git://sourceware.org/git/lvm2.git synced 2024-12-21 13:34:40 +03:00
Code Releases Activity

lvmlockd: detect when dlm lvb is invalidated

Browse Source 
The lvb content can be lost during dlm recovery,
and we need to detect when this happens to revalidate.
This commit is contained in:
David Teigland 2015-08-26 14:55:27 -05:00
parent 32e22a0037
commit 58713d34dd
1 changed files with 12 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
daemons/lvmlockd/lvmlockd-core.c
View File

@ -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