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Holger Parplies wrote:
> Hi,
> 
> schmoove wrote on 2009-09-14 06:02:16 -0400 [[BackupPC-users]  Client with 
> dynamic IP, backups cut off at 24h]:
>> [...] the backups fail and soon start over from scratch. I have noticed this
>> happening for 5 days when somehow backuppc managed to overcome this 24h
>> problem by itself and was able to resume failed backups all of a sudden.
>> Is this just coincidence, or why do I see these two different behaviors?
> 
> failing full rsync(d) backups result in a partial backup which can be resumed
> (i.e. restarted, taking the already transferred data into account). Failing
> incremental backups (or full backups with other XferMethods) are discarded.
> Are your incremental backups really taking more than 24 hours, or did your
> full backup simply take 5 days to complete (being interrupted and restarted
> four times)? Can you trust backups that seem to regularly take so long?
> 
> If this doesn't apply, you need to give more details on your configuration and
> setup. If it does, you probably do, anyway.
> 
>> Anything I can do to tweak backuppc to always resume incomplete backups?
> 
> Only do full backups? That is probably not a solution. You seem to have a
> basic problem which needs solving (too much regularly changing data over too
> little bandwidth or wrong choice of XferMethod).
> 
> Regards,
> Holger

Or perhaps it was a one-off (never only happens once, but rare event)
where someone changed a large amount of data at once. This would cause
the failing incremental backups, and eventually a full backup with the
help of partials might complete. The big problem is where you have a
single large file which takes more than 24 hours to backup, because the
partially transferred file will be deleted and start again in each
backup attempt....

I'd suggest you review your logs and find out what happened, and then
see if you think it will be a regular problem, and if it needs to be
solved...

Regards,
Adam
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