Hi,

On 02/11/15 05:56, František Starý wrote:
> Hello backuppc gurus.
>
> I've upgraded backuppc from 3.3.0-1ubuntu1 to 4.0.0alpha3. Now I have
> the following issues with some of my backuped hosts since the update.
> All my hosts are the same machine on the same network - just different
> folders with different backup settings.
> Host "mail" that backups about 190GB of small files (maildirs) has never
> successfully backed up since the upgrade (14 days). The error is:

Some generic comments that I found when doing the same upgrade:
1) Make sure you are not overriding the new default rsync arguments. 
Changing/adding/removing them can definitely cause problems. Start with 
the default, and then adjust after you know it is working. Also, use the 
new RsyncArgsExtra (or similar) variable instead of overwriting the default.

2) I found backups do not always work properly when backing up files 
that existed in an old v3.x backup. My solution was to delete the backup 
folders, and allow new backups to start with v4.x.

Those two changes have solved most of my problems with v4.x

My one remaining problem is that backups of very large number of files 
(in one directory, or just per host, not sure) means that the backup 
never succeeds. I often get these errors:
[4851230.076630] rsync_bpc[16712]: segfault at 7f573b73eb28 ip 
00000000004473af sp 00007ffce3b9c080 error 4 in rsync_bpc[400000+75000]
[4854892.163951] rsync_bpc[16935]: segfault at 7f375b0dbb28 ip 
00000000004473af sp 00007ffc0ffa4f50 error 4 in rsync_bpc[400000+75000]
[4856658.987895] rsync_bpc[17043]: segfault at 7f5130151b28 ip 
00000000004473af sp 00007ffedc7983b0 error 4 in rsync_bpc[400000+75000]
[4858478.492391] rsync_bpc[17268]: segfault at 7fb1c53beb28 ip 
00000000004473af sp 00007fff55d1cff0 error 4 in rsync_bpc[400000+75000]
[4860262.896093] rsync_bpc[17486]: segfault at 7f0f3bad0b28 ip 
00000000004473af sp 00007fffb82e86f0 error 4 in rsync_bpc[400000+75000]
[4862071.079868] rsync_bpc[17718]: segfault at 7fa6a7cdbb28 ip 
00000000004473af sp 00007ffcca0f7050 error 4 in rsync_bpc[400000+75000]
[4864030.543342] rsync_bpc[17969]: segfault at 7efcf242db28 ip 
00000000004473af sp 00007ffd5d4dd830 error 4 in rsync_bpc[400000+75000]
[4880848.314076] rsync_bpc[18779]: segfault at 7efe490b4e28 ip 
00000000004473af sp 00007ffc3fda1050 error 4 in rsync_bpc[400000+75000]

Which seem to happen each time the backup fails.

So, check dmesg output and see if you have this issue too.

Regards,
Adam

-- 
Adam Goryachev
Website Managers
P: +61 2 8304 0000                    adam AT websitemanagers.com DOT au
F: +61 2 8304 0001                     www.websitemanagers.com.au


-- 
Adam Goryachev Website Managers www.websitemanagers.com.au

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