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Re: Dump to holding disk only?
2007-09-12 11:54:05
Yu Chen wrote:
Hi,
I am wondering if there is a way to tell amanda to dump to holding
disk only. Then I will amflush it to tape, this way I can keep the
tape busy all time as I understand to prevent shoe-shinning for sure.
I understand if I don't put any tapes in the drive, this will be done.
But I have a tape library can hold 16 tapes, I would like to take
advantage of that without changing tape everyday manually like a
single tape drive.
Not sure if it is the best way to do it, but I do it by running my cron
jobs this way:
0 15 * * 1-5 /usr/local/sbin/amcheck -m daily
45 0 * * 2-6 /usr/local/sbin/amdump daily
45 0 * * 0-1 /usr/local/sbin/amdump daily -o reserve=100 -o
tapedev=/dev/rmt/0n -o tpchanger=""
The last line over-rides the configuration files with those three
parameters.
So, on weekends, when things are not busy here, I'm not wasting a tape.
Things sit on the holding disk and then just get flushed automatically
on Tuesday at 12:45am along with the regular backups.
Note that I am also causing it to fall back to incrementals only. If you
have adequate holding disk and aren't worried about that, you want to
change the reserve= value to allow fulls.
My backups normally go to an AIT5 tape library. By setting
tapedev=/dev/rmt/0n, I'm telling it to use the built in DDS/3 drive. But
there is no tape in it. So, it gives an error and does incrementals only
to the holding disk. The tpchanger="" is required, because otherwise
amanda will ask the tapechanger what drive to use and it will end up
going to the tapelibrary's drive anyway.
---------------
Chris Hoogendyk
-
O__ ---- Systems Administrator
c/ /'_ --- Biology & Geology Departments
(*) \(*) -- 140 Morrill Science Center
~~~~~~~~~~ - University of Massachusetts, Amherst
<hoogendyk AT bio.umass DOT edu>
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Erdös 4
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