From: | Andreas Pflug <pgadmin(at)pse-consulting(dot)de> |
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To: | |
Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, PostgreSQL Development <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: logfile rotation |
Date: | 2004-06-13 18:47:47 |
Message-ID: | 40CCA153.8060203@pse-consulting.de |
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Thread: | |
Lists: | pgsql-hackers |
Andreas Pflug wrote:
>
>> We agreed long ago that the
>> postmaster should never depend on the correctness of any shared memory
>> data structure; but this patch would make it do so.
>>
>>
> I understand that, so what's the suggested way to store data common
> for all backends?
Answering my own question, the distribution of the current logfile name
could be done trough a file handle. So the only thing remaining in
shared mem would be the "reopen logfile" flag, which seems
nonproblematic. In case of garbled sharedmem, a backend would reopen the
logfile, which does no harm at all, or continue writing the outdated
logfile which would be annoying but not harmful either.
Acceptable?
Regards,
Andreas
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