On Thursday 05 September 2002 11:48, Gene Heskett wrote:
>On Thursday 05 September 2002 09:29, Thomas Kirk wrote:
>>Hey Jim
>>
>>On Thu, Sep 05, 2002 at 08:01:52AM -0500, Jim Summers wrote:
>>
>>First of all thanks for the quick answer! :)
>>
>>> I think you will have to set up multiple disklist / configs to
>>> try and force Amanda to do this.
>>
>>Hmm this seems abit complicated to me as im still trying to grasp
>> the basic concepts of amanda? If you could point me towards some
>> reading or howto i would be very grateful!
>>
>>> Amanda herself determines the level and when that level will be
>>> done within the dumpcycle.  She tries to balance the amount of
>>> data backed up each run so as to maximize tape usage.
>
>Actually, its to equalize tape usage. :-)
>
>>So what you are telling me is that i can't control wich days to
>> do the full backup and which days to do incremental
>
>Not if you let amanda do it without interference.
>
>>> Each fs backed up MUST be able to fit on a tape.  You need to
>>> specify multiple tapes / use of a tape changer would be
>>> desireable.
>>
>>Ok let me get this straight fs here means filesystem ok?
>
>yes, and to further define it, each "partition" is a filesystem.

And to further clarify, if you use tar, then a subdir of a partition 
can be a 'filesystem'.  I do that here with a 30gb /usr.

>> a
>> filesystem is per/machine? or is it per time amanda is running?
>> So when amanda is running and doing a full backup all the
>> filesystems listed in disklist should be able to fit on one
>> tape?
>
>No, each entry's size is limited to one tape's size.  With a
>changer, amanda can use more than one tape if she needs to because
>the current one filled up.  In that event, the failed entry in the
>disklist will be restarted from scratch on the next tape.
>
>> Im using the newest beta which will backup to our NAS box with
>> 400GB available so i guess its just a question to fool amanda to
>> think that im running some big DLT that can have +80GB on one
>> tape or so? Is that right?
>
>No, don't lie to amand about what the tape can hold.  In fact,
> turn off any compression the drive might have and leave it off
> forever, and run the tape-src/tapetype utility after you build
> it.  It takes a while to run, but then amanda has a very good
> idea of the tapes capacity.  Enter that output data as the
> tapetype spec in your amanda.conf if it doesn't already have one
> for your tape. If amanda knows what the tape can hold, the
> schedule will probably be adjusted to prevent overflow if it can
> be done and stay within that 7 day dumpcycle.
>
>Amanda will use your favorite compressor if you use the right
>'dumptype'.  I play mix and match here as some partitions don't
>compress well, see the report to see which ones don't.  But with
> it enabled for about half my system I put 6+ gigs of data on one
> DDS-2 tape last night, and had about 1.5 gigs left on that tape.
>
>With a changer at her disposal, amanda can and will use more than
>one tape per run if need be.  Enabling that will cause your
>magazine reload schedule to be a check it daily operation to make
>sure there is enough tapes left for tonight though.

-- 
Cheers, Gene
AMD K6-III@500mhz 320M
Athlon1600XP@1400mhz  512M
99.14% setiathome rank, not too shabby for a WV hillbilly