On Sat, Dec 5, 2015 at 10:37 AM, David Raison <[email protected]> wrote:
>
> Well I did have ServerAliveInterval set. And as I mentioned, a parallel
> ssh session was still up, even when backuppc/rsync reported a timeout/EOF:
Yes, that is the problem you really need to solve. Why is your
connection breaking before the remote rsync exits? A 'parallel' ssh
would not necessarily do the same thing where session timeouts are
involved. Might be worth snooping with tcpdump/wireshark at both ends
to see if they both end up waiting or if something has sent a reset.
> Running: /usr/bin/ssh -C -o ServerAliveInterval=15 -q -x -l user host
>>
>>> Any thoughts on the partial backups / resume functionality? Or is that
>>> too related to ssh+rsync?
>> Backuppc doesn't exactly 'resume' where a partial stopped. The
>> previous partial is used as the basis for the next full where a
>> complete comparison is done (partials quickly skip files where the
>> timestamp and length match). So, it is still going to take the time
>> to read those files even though only differences will be transmitted.
>> At the end of the next failing partial, the run with the most files
>> will be kept.
>
> I realize that, but the comparison doesn't seem to be happening in this
> case, or is it?
>
> Whereas I see a pattern like this for most other backups:
>
> same
> pool
> same
> …
>
> This one – the failing one – is always listing "pool" or "create" maybe,
> but not a single time do I see a "same".
I'm not sure if the xfer always has the same ordering - maybe it is
just hitting different files first. Are you seeing files logged that
already exist in the partial copy?
--
Les Mikesell
[email protected]
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