After shrinking the FullMaxAge there were two days of backuppc "deletation", but only 3% free space gain while "Prior to pooling and compression" size decreased significantly, real space remained occupied.

There are now no V3 backups left as per
grep version /var/lib/backuppc/pc/*/*/backupInfo

5 days later, some 40GB are removed from "cpool4". I am still confused how this works. At least the disk is not "full" now and backups are performed as should, but there remains a big discrepancy between df/du reports and backuppc (762GB vs 388GB). If it is occuied by v4 or v3 (undeleted?) backups is not obvious to me and I am not sure how to find if there are any orpahned files. I also did fsck - no issues.

Adam Pribyl

On Wed, 25 Sep 2024, Adam Pribyl wrote:

On Wed, 25 Sep 2024, Richard Shaw wrote:

On Wed, Sep 25, 2024 at 8:11 AM Adam Pribyl <pri...@lowlevel.cz> wrote:

2/2024 I did upgrade of debian to 12 with a new backuppc version 4. Now
after several month of further backups the backuppc reports a full disk.


This is from memory so take it for what it's worth...

The V3 pools are not converted to V4, over time the V3 backups expire based
on your retention settings, so it looks like in your case having both is
taking up more room than you have.

As far as what to do about that other than potentially adding more disk
space temporarily I'm not sure there are a lot of good options.

Hm the cpool is 736GB by "df". Interesting enought I found the Schedule setup is to do every 14 day a full backup and store 12 full backups, but FullMaxAge is set to 365 days. Now there is 25 full backups oldest 365 days old - it looks like the V3 backups are only expiring at FullMaxAge but are not counted as regular full backups.. I tried to lower the FullMaxAge, let's see what nigthly does. Thanks for the hint.

Thanks,
Richard

Adam Pribyl

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