Re: recovering from "too many failures" wal error - Mailing list pgsql-general
On Mon, Dec 1, 2014 at 10:59 PM, Andy Colson <andy@squeakycode.net> wrote:
We have a postgresql 9.2 cluster setup to do continuous wal archiving.
We were archiving to a mount point that went offline. As a result the db
could not archive the wal files, we ended up with many many errors in
the logs indicating the file could not be archived:
WARNING: transaction log file "0000000100000FB100000050" could not be
archived: too many failures
So we caught the issue before the file system filled up, fixed the mount
point and I see wal files being added to the target wal archive
directory. However the pg_xlog directory does not seem to be shrinking,
there are currently 27,546 files in the pg_xlog directory and that
number is not changed in some time (since we fixed the mount point.
I assume the db will at some point remove the backed up files in the
pg_xlog dir, is this true? or do I need to intervene?
Thanks in advance
>From what I recall from this list, you should never play in pg_xlog. You'll probably do more damage than good. PG should take care of itself.
+1
Don't ever do that
Are you still getting error messages? Looks like its been a few days, has it shrunk yet?
if you are still getting error try to force an archival with
set synchronous_commit=off; -- needed only if you are replicating to synchronous slavesselect pg_switch_xlog(); -- though not neccessaryselect pg_start_backup('test');select pg_stop_backup();
I use these commands to test if archival is working fine or to force archival
Best Regards,
Sameer Kumar | Database Consultant
ASHNIK PTE. LTD.
101 Cecil Street, #11-11 Tong Eng Building, Singapore 069533
M: +65 8110 0350 T: +65 6438 3504 | www.ashnik.com
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