In message , A. Dumas
 writes
>Adrian  wrote:
>> Following another failure overnight, I've tried strace.
>>
>> execve("/usr/bin/rsync", ["rsync", "-av", "--delete", "--exclude=/run",
>> "--exclude=/tmp", "--exclude=/proc", "--exclude=/dev", "--exclude=/sys",
>> "--exclude=/var/swap", "--exclude=/var/backups", "--exclude=/var/cache",
>> "--exclude=/media", "/", ":"...], [/* 35 vars */]) =
>> 0
>> ...
>> 
>
>I didn't read that :) but my guess would certainly be that it has nothing
>to do with rsync and everything with a lost connection/route. Maybe a flaky
>ethernet cable or jack? It could happen. Try & set up a ping log from both
>to both and to the router.
>

I've already got a ping log (cron job, every minute) going from each
machine to the router, and they are not reporting any drops, and are
usually ~0.4mS.  The source machine uses a switch which has two other
Pis attached to it, and they are also pinging away every minute without
problem.  The scripts running he pings have a delay in them, so each one
pings at a different time (assuming that the clocks are precisely
synced).


Adrian
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