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Re: Disk full and WALs

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On 10-08-01 03:03 PM, Tom Lane wrote:
The archiver will retry, *if the archive command returns non-zero exit
status*.  It sounds to me like you're using an archive command script
that dutifully logs a failure but is careless about returning the proper
exit status.

That was my first thought, too, but the PostgreSQL log says this...

2010-07-31 06:29:11 EDT LOG:  archive command failed with exit code 1

...so it definitely knew about it. It was also suspicious that 00000001000002BD00000072.00000020.backup hung around in the pg_xlog directory; if the server thought the archive command was successful it would presumably have cleaned it up.

I'm afraid you're probably screwed as far as replaying any data beyond
the lost WAL segment goes.  Even if you forced the system to try to
replay it, you'd have corrupted database state because of the omission
of the changes that were in the lost segment.  If you still have the
original $PGDATA tree (ie you didn't blow it away while trying the PITR
idea) then you might be able to get a closer approximation to current
time by doing resetxlog and starting up --- though the consistency of
the DB would still be questionable, so a dump and reload would be
advisable.

			regards, tom lane

Luckily, we were able to rebuild our data from out-of-band data, but it's good to know about resetxlog.

Thanks for your help.

jk

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