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After synchronization is complete we should make primary counters be

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equal to secondary counters:

  primary_localcnt = secondary_remotecnt
  primary_remotecnt = secondary_localcnt

Previously it was done wrong and split-brain was observed after
primary had synchronized up-to-date data from secondary.

Approved by:	pjd (mentor)
MFC after:	1 week
This commit is contained in:
Mikolaj Golub 2011-03-22 20:27:26 +00:00
parent 999d680c92
commit 9237aa3fa5
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=219882
1 changed files with 3 additions and 3 deletions
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6
sbin/hastd/primary.c
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@ -1757,13 +1757,13 @@ sync_thread(void *arg __unused)
mtx_lock(&metadata_lock);
res->hr_syncsrc = HAST_SYNCSRC_UNDEF;
res->hr_primary_localcnt =
res->hr_secondary_localcnt;
res->hr_primary_remotecnt =
res->hr_secondary_remotecnt;
res->hr_primary_remotecnt =
res->hr_secondary_localcnt;
pjdlog_debug(1,
"Setting localcnt to %ju and remotecnt to %ju.",
(uintmax_t)res->hr_primary_localcnt,
(uintmax_t)res->hr_secondary_localcnt);
(uintmax_t)res->hr_primary_remotecnt);
(void)metadata_write(res);
mtx_unlock(&metadata_lock);
}