Dolphin file copy question

[Duncan]

James Colby posted on Sat, 24 Sep 2011 22:44:08 -0400 as excerpted:

> Another questions that I can't seem to find the answer to.  Is it
> possible to set up rsync to auto retry on failure?  The resume option
> work great, but I would like rsync to retry after a network failure
> automatically. The other night my connection dropped out shortly after I
> started my rsync session and an entire night was wasted, and I would
> like to avoid that in the future.

You're challenging me a bit, too. =:^)

My first instinct, and a look at the rsync manpage appears to confirm it, 
is that at a minimum, retries should be scriptable.  Simply stick the 
call to rsync in a loop that tests whether the exit value was 0/success 
and then exits, or something else.  The manpage lists the exit values and 
their meaning, and you can check for specific values and behave 
accordingly.  So for instance, exit code 30 (timeout in data send/
receive) and exit code 35 (timeout waiting for daemon connection) look to 
be likely for network issues, and you can have the scripted loop retry 
the rsync in those cases, but not for instance with exit code 1 (syntax 
or usage error), where a verbatim retry is very likely to result in the 
same exit code 100% of the time.  (See also the --timeout and --contimeout 
options.)  I'd suggest verifying the actual error codes you get, and 
testing for them to decide whether to try again, or not.

Of course the above assumes you know enough about shell scripting to be 
able to manage setting up the loop, etc.  If not, I can probably help 
with that too, but that gets complex enough and the assumption is likely 
enough to be true to be worth making it, initially.

-- 
Duncan - List replies preferred.   No HTML msgs.
"Every nonfree program has a lord, a master --
and if you use the program, he is your master."  Richard Stallman

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