Re: pg_standby stuck on a wal file size <16MB

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От Gurjeet Singh
Тема Re: pg_standby stuck on a wal file size <16MB
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Msg-id 65937bea0805171939r3e11985ekddd5dbdc50542483@mail.gmail.com
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Ответ на Re: pg_standby stuck on a wal file size <16MB  (Vlad Kosilov <vkosilov@contigo.com>)
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On Sun, May 18, 2008 at 5:48 AM, Vlad Kosilov <vkosilov@contigo.com> wrote:
is this wrong of me to expect that postgres would not make a wal file available to archive_command unless it was completely ready to let go of that wal file?

thats a perfectly reasonable expectation; and thats exactly how it works.



Ioannis Tambouras wrote:
 archive_command = 'test ! -f /usr/local/wal_archive_local/%f && cp %p
 /usr/local/wal_archive_local/%f'
   

 The archive command tests if the wal segment exists and is a file, but it does not check if the file is still being written. You need to copy the file after writing has finished (it reached 16777216 bytes). I don't have sources of pg_standby near me, but I remember in the
C code checks for complete segment sizes.


thanks
Ioannis Tambouras


 


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Vladimir (Vlad) Kosilov
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Contigo Systems Inc.
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www.contigo.com
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