Hello Iosif,
Thank you for your explanation.
But how can I explain that both backups are identical in size and content as soon as I export them as .zip or .tar?
At most, it happens that the backups differ in one or two lines in a log file, but are otherwise completely identical.
Nevertheless, BackupPC v4 displays something completely different in the overview.
Greetings
Stefan
Gesendet: Montag, 12. Dezember 2022 um 13:27 Uhr
Von: "Iosif Fettich" <ifett...@netsoft.ro>
An: "General list for user discussion, questions and support" <backuppc-users@lists.sourceforge.net>
Betreff: Re: [BackupPC-users] File Size Summary shows too large value for host
Von: "Iosif Fettich" <ifett...@netsoft.ro>
An: "General list for user discussion, questions and support" <backuppc-users@lists.sourceforge.net>
Betreff: Re: [BackupPC-users] File Size Summary shows too large value for host
Hello Stefan,
> here I have the logs from two different hosts, each backed up with v3
> and v4. Unfortunately, both hosts have been set up in BackupPC for a
> while, so they are not completely fresh backups. However, I don't think
> that should make a difference. You can see that despite identical
> numbers of files, the backups have significant differences in size.
Identical number of files != same files
> v3
> 2022-12-12 10:15:15 full backup started for directory / (baseline backup #4521)
> 2022-12-12 10:17:31 full backup 4522 complete, 75368 files, 4031524511 bytes, 1 xferErrs (0 bad files, 0 bad shares, 1 other)
> Remote[2]: file has vanished: "/var/spool/exim4/input/1p4eu4-0002rf-1f-D"
[...]
> Remote[2]: file has vanished: "/mnt/system/tmp/cron-apt.klojST/initlog"
> Remote[2]: file has vanished: "/tmp/cron-apt.klojST/initlog"
Since you're backing up temporary and ephemeral files as well, besides the
ones that you could actually use, it's very possible that
you get some files that are changing allot in size within no time.
Archived logfiles can change from many GBs to just a handful of bytes
whenever logrotate steps in...
Look after /var/log/messages* for example and compare the sizes you see
with the two types of backups.
Just a thought: backups are _not_ like snapshots, if you think about
catching a particular (and reproducible...) state of your machine.
Best regards,
Ioisf Fettich
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> here I have the logs from two different hosts, each backed up with v3
> and v4. Unfortunately, both hosts have been set up in BackupPC for a
> while, so they are not completely fresh backups. However, I don't think
> that should make a difference. You can see that despite identical
> numbers of files, the backups have significant differences in size.
Identical number of files != same files
> v3
> 2022-12-12 10:15:15 full backup started for directory / (baseline backup #4521)
> 2022-12-12 10:17:31 full backup 4522 complete, 75368 files, 4031524511 bytes, 1 xferErrs (0 bad files, 0 bad shares, 1 other)
> Remote[2]: file has vanished: "/var/spool/exim4/input/1p4eu4-0002rf-1f-D"
[...]
> Remote[2]: file has vanished: "/mnt/system/tmp/cron-apt.klojST/initlog"
> Remote[2]: file has vanished: "/tmp/cron-apt.klojST/initlog"
Since you're backing up temporary and ephemeral files as well, besides the
ones that you could actually use, it's very possible that
you get some files that are changing allot in size within no time.
Archived logfiles can change from many GBs to just a handful of bytes
whenever logrotate steps in...
Look after /var/log/messages* for example and compare the sizes you see
with the two types of backups.
Just a thought: backups are _not_ like snapshots, if you think about
catching a particular (and reproducible...) state of your machine.
Best regards,
Ioisf Fettich
_______________________________________________
BackupPC-users mailing list
BackupPC-users@lists.sourceforge.net
List: https://lists.sourceforge.net/lists/listinfo/backuppc-users
Wiki: https://github.com/backuppc/backuppc/wiki
Project: https://backuppc.github.io/backuppc/
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