Re: Trimming transaction logs after extended WAL archive failures

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От Adrian Klaver
Тема Re: Trimming transaction logs after extended WAL archive failures
Дата
Msg-id 53320AEF.4050305@aklaver.com
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Ответ на Re: Trimming transaction logs after extended WAL archive failures  (Steven Schlansker <steven@likeness.com>)
Ответы Re: Trimming transaction logs after extended WAL archive failures  (Steven Schlansker <steven@likeness.com>)
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On 03/25/2014 03:54 PM, Steven Schlansker wrote:
>
> On Mar 25, 2014, at 3:52 PM, Adrian Klaver <adrian.klaver@aklaver.com> wrote:
>
>> On 03/25/2014 01:56 PM, Steven Schlansker wrote:
>>> Hi everyone,
>>>
>>> I have a Postgres 9.3.3 database machine.  Due to some intelligent work on the part of someone who shall remain
nameless,the WAL archive command included a ‘> /dev/null 2>&1’ which masked archive failures until the disk entirely
filledwith 400GB of pg_xlog entries. 
>>>
>>> I have fixed the archive command and can see WAL segments being shipped off of the server, however the xlog remains
ata stable size and is not shrinking.  In fact, it’s still growing at a (much slower) rate. 
>>
>> So what is wal_keep_segments set at in postgresql.conf?
>>
>
> 5000.  There are currently about 18000 WAL segments in pg_xlog.

I guess what I should have also asked previously is what exactly are you
doing, are you streaming as well as archiving?


>
>>>
>>> I’ve seen references to people just deleting “old” segment files or using pg_resetxlog to fix this situation,
howeverI already know that the response from the mailing list will be “that’s insane, don’t do that”. 
>>>
>>> So what is the correct solution to pursue here?  The steady state of the machine should have enough space, I just
needto reclaim some of it...  Thanks for any guidance! 
>>>
>>> Steven
>>>
>>>
>>>
>>
>>
>> --
>> Adrian Klaver
>> adrian.klaver@aklaver.com
>
>
>


--
Adrian Klaver
adrian.klaver@aklaver.com


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