On Thursday 28 September 2006 16:47, Jon LaBadie wrote:
>On Thu, Sep 28, 2006 at 11:09:37AM -0700, Steven Kurylo wrote:
>> Hi,
>>
>> Right now we run a weekly full backup, rotating through several tapes.
>> As well we run a full monthly backup, rotating through the tapes
>> yearly.
>>
>> Running a weekly backup and then a monthly backup is rather wasteful,
>> the data will almost be identical. Is there anyway I can take the
>> weekly backup which just finished and copy it to the monthly tapes?
>>
>> I could use dd, but then amanda wouldn't know about these monthly
>> tapes. That would make restoring data troublesome. Is there a way to
>> make amanda copy data from a tape labeled "weekly1" to "monthly1"? Or
>> can I manually copy certain files from the weekly index/info
>> directories to the monthly directory to make amrestore work after I dd
>> the tapes?
>>
>> Is there a better solution?
>
>It has been suggested as an excellent enhancement to amanda.
>No one has yet taken up the task of implementing it.
What do you mean "no one", Jon? Gee, don't I count? :-)
Lets take a 2 minute commercial break here:
That becomes a non-issue if my wrapper scripts are being used, as each tape
(or an archival copy of it) then contains ALL the info needed to restore
from it, or any previous tape in that "tapecycle". All appended to the
regular backup where on a real tape its a long mt -f /dev/ice fsf #of
dle's to get to it, but it is there. On a vtape, much handier because its
just a couple more files in each slots directory and therefore instantly
available for a tar based recovery, of both the indices, and the amanda
config info that generated THAT backup.
Because its a wrapper script, it does part of its work AFTER amdump has
completed, and all file locks amanda may have set are cleared, so there
are NO missing files in the tarballs of your */etc/amanda/Daily tree, or
your */var/amanda/Daily/indice directory that are shown below as the last
2 files of the listing.
If anyone is interested, see GenesAmandaHelper-0.5.tar.gz on the
www.zmanda.org site. Tain't purty, has the dregs of 3 years development
commented out in it, but "it works for me".
The directory of a vtape these scripts make looks like this:
[root@coyote example]# ls -l /amandatapes/Dailys/data/
total 7347216
-rw------- 1 amanda disk 10 Sep 10 00:42 00000-Dailys-14
-rw------- 1 amanda disk 32768 Sep 10 00:42 00000.Dailys-14
-rw------- 1 amanda disk 12 Sep 10 00:46 00001-coyote._var.2
-rw------- 1 amanda disk 7471104 Sep 10 00:46 00001.coyote._var.2
-rw------- 1 amanda disk 14 Sep 10 00:54 00002-coyote._root.2
-rw------- 1 amanda disk 601554944 Sep 10 00:54 00002.coyote._root.2
-rw------- 1 amanda disk 14 Sep 10 00:56 00003-coyote._usr_local.0
-rw------- 1 amanda disk 581533696 Sep 10 00:56 00003.coyote._usr_local.0
[...]
-rw------- 1 amanda disk 11 Sep 10 03:43 00045-gene._etc.0
-rw------- 1 amanda disk 2195456 Sep 10 03:43 00045.gene._etc.0
-rw------- 1 amanda disk 10 Sep 10 03:43 00046-TAPEEND
-rw------- 1 amanda disk 32768 Sep 10 03:43 00046.TAPEEND
-rw-r--r-- 1 amanda disk 81920 Sep 10 03:44 configuration.tar
-rw-r--r-- 1 amanda disk 117688320 Sep 10 03:44 indices.tar
Humm, looks like amcheck has already run and its set to overwrite the
oldest vtape. But you get the idea I hope.
The last 2 files are the magic twanger. They might be squeezable with
gzip, but the indices are already gzipped files, so gaining anything there
isn't worth the cpu horsepower to try.
I now return you to your regularly scheduled programming. :)
--
Cheers, Gene
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Yahoo.com and AOL/TW attorneys please note, additions to the above
message by Gene Heskett are:
Copyright 2006 by Maurice Eugene Heskett, all rights reserved.
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