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Re: How to recover from compressed wal archieve in windows

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On 5/20/20 11:43 AM, Paul Förster wrote:
Hi Andrus, hi Adrian,

see:

25.3.6.2. Compressed Archive Logs
https://www.postgresql.org/docs/12/continuous-archiving.html#BACKUP-TIPS

Hope this helps in dealing with compressed WAL files.

Yeah, the issue would be getting a version of gunzip that works on Windows. In the past I have had luck with:

https://www.7-zip.org/

Not sure how well it works with redirects/pipes.


Cheers,
Paul


On 20. May, 2020, at 20:36, Adrian Klaver <adrian.klaver@xxxxxxxxxxx> wrote:

On 5/20/20 8:08 AM, Andrus wrote:
In windows 10
pg_receivewal --directory="d:\wallog" --verbose --compress=9
is used to archieve WAL.
This creates .gz files
For restore
restore_command='copy "D:\\wallog\\%f" "%p"'

I'm guessing:

restore_command='copy "D:\\wallog\\%f.gz" "%p"'

will get you the file.

The next problem is that I'm pretty sure a WAL file with *.gz extension will not be able to be processed directly by the server. So you are going to have to uncompress it at some point before it gets restored.


is used.
Restore shows "file not found" errors in console. Thi sis probably because %f argument is WAL file name without extension.
How to use compressed WAL files for WAL archieve and restore in windows ?
Andrus.


--
Adrian Klaver
adrian.klaver@xxxxxxxxxxx





--
Adrian Klaver
adrian.klaver@xxxxxxxxxxx





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