On Mon, Jan 16, 2017 at 2:13 PM, John Spitzer <johned9999 AT comcast DOT net> 
wrote:
> I have BackupPC setup with three host configurations to backup three
> separate areas of one system. Two of the hosts configurations are
> working. One repeatedly fails with the messages:
>
> Can't write 33792 bytes to socket
> Can't write 35328 bytes to socket
> ...
> Got fatal error during xfer (aborted by signal=PIPE)

This basically means you lost the connection to the client or the
remote side crashed.

> The first time this happened I deleted the entire backup for this host.
> It then works for a few backup cycles but then fails again. The back
> cycles were able to make a full, two incremental, a full, two
> incremental. Then it failed again with these same errors on a full backup.

Do you have NAT gateways or stateful firewalls in the network path?
These can time out connections if they are idle for a certain amount
of time, and backuppc can spend a long time comparing unchanged files
without transferring anything.

> I have set the logging level to 8 to try and capture more data. There is
> the portion of the log for the file that is failing and the previous file:

You probably won't see a cause on the backuppc side.  Just the PIPE
signal when the connection drops.

-- 
   Les Mikesell
     lesmikesell AT gmail DOT com

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