Hi all,
I have a problem during remote VM backup, with BackupPc 3.3.2 on
Raspbian 10. The VM is running debian 8 (i know it's old... :), and I'm
backupping it via rsync/ssh. I worked for years, but I guess that
something changed cluster side, and since it's managed I've not got full
control over networking stuff.
The problem is that incremental backups stopped working 207 days ago,
and since there are no fresh incremental they have schedule precedence
over full backups, so the only way I have to backup my data is doing
manual full backups.
They simply always fails after 31/32 minutes with the following logs:
2025-07-09 07:00:10 Started incr backup on xxx.net (pid=3331, share=/)
2025-07-09 07:31:37 Backup failed on xxx.net (Child exited prematurely)
2025-07-09 08:00:00 Next wakeup is 2025-07-09 09:00:00
Full backup works like a charm in less than 1h 30m:
2025-07-07 09:31:39 User backuppc requested backup of xxx.net (xxx.net)
2025-07-07 09:31:50 Started full backup on xxx.net (pid=23685, share=/)
2025-07-07 10:00:01 Next wakeup is 2025-07-07 11:00:00
2025-07-07 10:54:17 Finished full backup on xxx.net
2025-07-07 10:54:17 Running BackupPC_link xxx.net (pid=30281)
2025-07-07 10:54:53 Finished xxx.net (BackupPC_link xxx.net)
2025-07-07 1:00:00 Next wakeup is 2025-07-07 12:00:00
I've searched for logs VM side, but I didn't found nothing intresting.
My suspects are on RsyncArgs config, but I can't figure which are the
differencies between full and incremental backups:
$Conf{RsyncArgs} = [
'--numeric-ids',
'--perms',
'--owner',
'--group',
'-D',
'--links',
'--hard-links',
'--times',
'--block-size=2048',
'--recursive'
];
Following BackupPc configuration for this machine:
$Conf{PingMaxMsec} = 800;
$Conf{FullAgeMax} = 60;
$Conf{FullPeriod} = '6.97';
$Conf{BackupFilesExclude} = {
'*' => [
'/proc',
'/sys',
'/var/lib/mysql',
'/var/lib/php/sessions',
'/mnt/data/mysql',
'/tmp',
'/run'
]
};
$Conf{IncrPeriod} = '0.97';
$Conf{BlackoutPeriods} = [
{
'hourEnd' => '23.5',
'hourBegin' => 8,
'weekDays' => [
0,
1,
2,
3,
4,
5,
6
]
}
];
$Conf{IncrKeepCnt} = 15;
My questions are two:
[1] How can I debug what's killing my incremental backups? Is it
possible to let them be more ligthweight, maybe letting them finish,
working on RsyncArgs or maybe elsewhere?
[2] If [1] fails, how can I completly disable incremental scheduling
only full backups?
Thanks a lot
g4b0
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