https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=42028

Michał <[email protected]> changed:

           What    |Removed                     |Added
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                 CC|                            |[email protected],
                   |                            |[email protected]
                   |                            |om
             Status|NEW                         |Needs Signoff

--- Comment #4 from Michał <[email protected]> ---
Test plan:

PATCH 1:

1. Before applying run `time koha-dump INSTANCE`

2. Apply patch

3. Run #1 again and compare the times, run `ls -lh /var/spool/koha/INSTANCE`
and compare the file sizes for .gz and .zst

Optionally you may run `koha-run-backups --days 7 --exclude-indexes
--exclude-logs --output /var/spool/koha` to make sure it works as expected,
altering file name and date with `touch -d` or so, to make sure the --days
option still works as expected and old files are getting removed.

PATCH 2:

1. Run old cron command: `koha-run-backups --days 2 --output /var/spool/koha`

2. Look at the generated file size of .tar.zst in /var/spool/koha/INSTANCE

3. Run new command: `koha-run-backups --days 7 --exclude-indexes --exclude-logs
--output /var/spool/koha`

4. Compare the sizes. Note that production installations with sizable Zebra
index and log files will only yield the proper difference effect.

PATCH 3:

Run `koha-dump INSTANCE` and in another terminal use a tool like htop and you
can sort by "NI" column to make sure koha-dump and its children processes have
value of 10. You may also check ionice with: ionice -p `pidof zstd` (or replace
zstd with mysqldump or tar). Be quick, since zstd backup finished much more
quickly, you'd need to check these values before it finishes.

The error messages for renice and ionice should not be shown at the top of your
koha-dump terminal output (own process normally can adjust own values, and also
these scripts are in sbin to only run as root...).

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