From: | Niels Kristian Schjødt <nielskristian(at)autouncle(dot)com> |
---|---|
To: | Magnus Hagander <magnus(at)hagander(dot)net> |
Cc: | postgres performance list <pgsql-performance(at)postgresql(dot)org> |
Subject: | Re: Why is my pg_xlog directory so huge? |
Date: | 2013-03-18 15:41:19 |
Message-ID: | 1018C01B-F44B-4E42-AC57-F29EEA840A32@autouncle.com |
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Thread: | |
Lists: | pgsql-performance |
Thanks! it worked! :-)
Den 18/03/2013 kl. 15.38 skrev Magnus Hagander <magnus(at)hagander(dot)net>:
> On Mon, Mar 18, 2013 at 2:08 PM, Niels Kristian Schjødt
> <nielskristian(at)autouncle(dot)com> wrote:
>> Okay, thanks. It' seems you were right! Now I have fixed the issue (it was an ssh key).
>> So I started a:
>> SELECT pg_start_backup('backup', true);
>>
>> And when done, I executed a:
>> sudo -u postgres rsync -av --exclude postmaster.pid --exclude pg_xlog /var/lib/postgresql/9.2/main/ postgres(at)192(dot)168(dot)0(dot)2:/var/lib/postgresql/9.2/main/
>>
>> Then I tried to finish off the backup by doing a:
>> SELECT pg_stop_backup();
>>
>> But It keeps on telling me:
>> WARNING: pg_stop_backup still waiting for all required WAL segments to be archived (480 seconds elapsed)
>> HINT: Check that your archive_command is executing properly. pg_stop_backup can be canceled safely, but the database backup will not be usable without all the WAL segments.
>>
>> And I could see in the log that it's some kind of permission issue. So I canceled it, and started the streaming replication on my slave, and it seems to work fine. However the pg_xlog dir on the master is still HUGE 153G - so how can I get this mess sorted, and cleaned up that directory?
>
> Once you have your archive_command working, it will transfer all your
> xlog to the archive. Once it is, the xlog directory should
> automatically clean up fairly quickly.
>
> If you still have a permissions problem with the archive, you
> obviously need to fix that first.
>
> If you don't care about your archive you could set your
> archive_command to e.g. /bin/true, and that will make it pretend it
> has archived the files, and should clean it up quicker. But that will
> mean you have no valid archive and thus no valid backups, until you
> start over froma new base.
>
>
> --
> Magnus Hagander
> Me: http://www.hagander.net/
> Work: http://www.redpill-linpro.com/
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