Re: strange behavior of WAL files - Mailing list pgsql-general

From Atul Kumar
Subject Re: strange behavior of WAL files
Date
Msg-id CA+ONtZ77=jQvmumHOsyK9g-ppOV8bBeCzV0AMZk1CBfysCM56g@mail.gmail.com
Whole thread Raw
In response to Re: strange behavior of WAL files  (Jehan-Guillaume de Rorthais <jgdr@dalibo.com>)
Responses Re: strange behavior of WAL files  (Vijaykumar Jain <vijaykumarjain.github@gmail.com>)
Re: strange behavior of WAL files  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-general
Hi,


archive_command is 'cp %p /nfslogs/wal/%f'

and no, we are not removing anything from pg_xlog directory.

once old WAL files of pg_xlog directory are archived in
'/nfslogs/wal/' directory then these WAL files are getting generated
with the same name in pg_xlog directory.

my query is Why is this happening ?



please help me with your suggestions.


Regards.




On 6/4/21, Jehan-Guillaume de Rorthais <jgdr@dalibo.com> wrote:
> On Fri, 4 Jun 2021 15:39:30 +0530
> Atul Kumar <akumar14871@gmail.com> wrote:
>
>> HI,
>>
>> We have a centos 6 enviornment where postgres 9.6 is running on it.
>>
>> We have strange behavior of WAL files of pg_xlog directory
>>
>> As we have set archive_command to archive WAL files at different
>> location and the archive_command is working fine.
>>
>> So strange behavior is :
>>
>> We have a WAL file say for example "00000001000036CD000000E2" of
>> 01.06.2021 (1st June 2021) that is getting archive successfully at the
>> archive location and once it is archived, this file with same name
>> (00000001000036CD000000E2) is getting generated with the latest
>> timestamp (as today is 04.06.2021).and all old WAL files are behaving
>> in same manner.
>
> What is you archive_command?
>
> I'm not sure I understand correctly, but keep in mind your
> archive_command must be "read only". Do not remove the WAL file after
> archiving
> it.
>
> Regards,
>



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