[BackupPC-users] Backup over slow link: endless loop or just missing pat

Hello,

I have a virtual private server hosted at my internet provider. System is CentOS 6.5 with BackupPC 3.3.0.

I use it as offsite backup facility for the most important data on my local NAS. I partioned the data such that each "host" corresponds to one logical data set, like code repository, document storage, etc. of - as I thought - not too big size.

The uplink is a slow DSL line with a maximum of 640 kBit/s towards the BackupPC server. BackupPC server is connected to NAS via openVPN. Transfer method is rsyncd.

Largest data set ("host") so far was about 1 GB. It took a few days to complete the first full backup. Since then daily incrementals and weekly fulls run smoothly.

Next data set added was my home directory with 15 GB. Attempts to complete the first full backup have been lasting 8 days for now. Log says:

2014-09-21 13:04:52 full backup started for directory users-neubert
2014-09-22 22:21:47 Aborting backup up after signal ALRM
2014-09-22 22:21:48 Got fatal error during xfer (aborted by signal=ALRM)
2014-09-22 22:21:48 Saved partial dump 0
2014-09-22 22:22:42 full backup started for directory users-neubert
2014-09-23 18:43:46 Aborting backup up after signal ALRM
2014-09-23 18:43:47 Got fatal error during xfer (aborted by signal=ALRM)
2014-09-23 18:43:47 full backup started for directory users-neubert
2014-09-24 15:03:35 Aborting backup up after signal ALRM
2014-09-24 15:03:36 Got fatal error during xfer (aborted by signal=ALRM)
2014-09-24 15:03:37 full backup started for directory users-neubert
2014-09-25 11:24:20 Aborting backup up after signal ALRM
... (more such stanzas skipped) ...
2014-09-29 06:40:06 Got fatal error during xfer (aborted by signal=ALRM)
2014-09-29 06:40:06 full backup started for directory users-neubert

What bothers me are the fatal errors (signal= ALRM) in combination with the last lines of the "Last bad XferLOG" (right after the list of transferred files):

Child is aborting
Done: 27503 files, 16082763640 bytes
Got fatal error during xfer (aborted by signal=ALRM)
Backup aborted by user signal
Not saving this as a partial backup since it has fewer files than the prior one (got 27503 and 27503 files versus 27628)

Does this mean that I am actually stuck in an endless loop because there is a certain point in time or amount of data beyond which the backup does not go?

What are the reasons for the aborts or where do I need to look? They are not related to regular or irregular disconnects and IP reassignments. That I know from the DSL connection logs.

Kind regards
Boris

------------------------------------------------------------------------------
Slashdot TV.  Videos for Nerds.  Stuff that Matters.
http://pubads.g.doubleclick.net/gampad/clk?id=160591471&iu=/4140/ostg.clktrk

_______________________________________________
BackupPC-users mailing list
BackupPC-users AT lists.sourceforge DOT net
List:    https://lists.sourceforge.net/lists/listinfo/backuppc-users
Wiki:    http://backuppc.wiki.sourceforge.net
Project: http://backuppc.sourceforge.net/

[BackupPC-users] Backup over slow link: endless loop or just missing patience?