I figured out the problem, after modifying "amadmin disklist" so that
it prints out the spindle number, at least in amanda-24.4p3.

I had lines in disklist which looked something like this:

localhost //bunting/c$ root-sambatar eth0

eth0 was parsed as a spindle number of 0, in addition to being parsed as
an interface value of eth0.

Here's the output from the modified "amadmin normal disklist"

line 56:
    host localhost:
        interface ETH0
    disk //bunting/c$:
        program "GNUTAR"
        priority 0
        dumpcycle 28
        maxdumps 4
        maxpromoteday 10000
        strategy STANDARD
        compress SERVER BEST
        comprate 0.50 0.50
        auth BSD
        kencrypt NO
        holdingdisk YES
        record YES
        index YES
        skip-incr NO
        skip-full NO
        spindle 0



It looks like maxdumps is picked up correctly, but the spindle value
of 0 may be preventing multiple dumpers from running.  I'll give it
another try soon, and suggest a few patches to the amanda-hackers list.


Kevin Dalley <kevin AT kelphead DOT org> writes:

> "Stefan G. Weichinger" <monitor AT oops.co DOT at> writes:
>
>>
>> Lookup the usage of the parameter maxdumps.
>>
>> man amanda:
>>
>> maxdumps int
>>
>>   Default:  1.
>>   The maximum number of backups from a single host that Amanda will attempt 
>> to run in parallel.
>>
>> Increase this one and tell us the results.
>>
>
>
> That was my starting point.  I set maxdumps to 4, but only in the
> dumptypes for amanda.  I'm still using the default of 1 for other
> backups.
>
> Should I set maxdumps to 4 globally rather than locally.  Here are the
> relevant dumptypes.
>
> define dumptype root-sambatar {
>     program "GNUTAR"
>     comment "Root partitions dumped with tar"
>     options index
>     compress server best
>     maxdumps 4
>     priority low
> }
>
> define dumptype user-sambatar {
>     comment "User partitions dumped with samba"
>     root-sambatar
>     priority medium
> }
>
>
> -- 
> Kevin Dalley
> kevin AT kelphead DOT org
>

-- 
Kevin Dalley
kevin AT kelphead DOT org