On Wednesday 06 April 2005 09:34, Vicki Stanfield wrote:
>I am still trying to understand and improve my inherited amanda
>configuration. I notice that in the disklist, there are parent
>directories listed before their children. Here is an example:
>
>myhost / comp-low-tar
>myhost /usr comp-low-tar
>myhost /var comp-med-tar
>myhost /net/myhost/home comp-med-tar
Hoo boy! Vicky, do you not understand that / and /usr are very likely
two entirely seperate filesystems, mounted individually?
>Does Amanda backup the subdirectories of an item listed in the
> disklist?
Unless you explicitely exclude a subdir, it will be recursively backed
up by tar. dump OTOH, can only do the full filesystem. Thats why we
like tar, much better control.
> And does that mean that I am backing up /usr twice? I
> suspect that the answer is no, but I would like to confirm this.
Look at the /etc/fstab on that machine Vicky, and if there are
seperate entries for each, then they are indeed seperate filesystems,
and the disklist is correct.
>I also notice that some things in the disklist sometimes show up in
>amadmin balance as being extraordinarily overdue (like 131 days).
>due-date #fs orig KB out KB balance
>----------------------------------------------
> 4/06 Wed 5 56836750 46326642 +384.2%
> 4/07 Thu 2 13680830 13680830 +43.0%
> 4/08 Fri 0 0 0 ---
> 4/09 Sat 3 7928350 6604199 -31.0%
> 4/10 Sun 3 9011080 9011080 -5.8%
> 4/11 Mon 5 14117700 8890351 -7.1%
> 4/12 Tue 6 11165980 10039560 +4.9%
> 4/13 Wed 6 11057670 9254644 -3.3%
>
> 4/16 Sat 8 9326350 8127764 -15.1%
> 4/17 Sun 4 11941010 10722435 +12.1%
> 4/18 Mon 1 14422360 14422360 +50.7%
> 4/19 Tue 3 14011020 11719132 +22.5%
> 4/20 Wed 6 11232850 8034076 -16.0%
>
> 4/23 Sat 32 10841180 10841180 +13.3%
> 4/24 Sun 1 14116820 14116820 +47.5%
>----------------------------------------------
>TOTAL 85 209689950 181791073 9567951
> (estimated 19 runs per dumpcycle)
> (3 filesystems overdue, the most being overdue 131 days)
Thats a bonafide notice that one or more of the filesystems has grown
so big that a level 0 on it will no longer fit on the storage medium.
When that happens, the backups on that filesystem cease.
The former administrators account should contain emails notifying the
admin of that problem. I suspect they haven't been read in quite
some time. As root, change the ownership from the previous account
holder to your's, and then mv the whole thing to your home directory
so you can peruse them for clues.
So now, your job is to find out which partition has outgrown the
media, and convert that disklist entry into a list of subdirs that
are each within the capacity of the media to do a level 0 on.
I would, at this time, edit only the amanda.conf file and change only
the mailto: data so you get these emails. You probably want to
inspect the crontab entry for the user who actually executes amanda,
and change the mailto: in that, just to make sure you get all the
emails it generates and don't have to go charging off into the
wilderness without a suitable map of what it is you need to do.
>I am suspicious that it is the parent directories that are so much
>overdue, but I don't know how to confirm what is overdue.
> Additionally, I am looking for a way to determine which disklist
> item is going to be fully backed up when. They don't seem to
> correspond that way. Is there an option to amadmin that I missed?
Probably, but I haven't had occasion to use it for that, so I'm "not a
guru(TM)" on amadmins other features.
When you do find the perp, then comment that line of the disklist out,
and make entries in it for each subdir, doing about half of them for
tonight, and the other half tomorrow.
As a philosophical thing, I like to keep a disklist entry below 1/2 a
tape, and many of mine are much smaller than that. Amanda will
slowly juggle the schedule until amanda is useing about the same
amount of tape for every run. But when the disklist entries are all
half a tape or more in size, then amanda has relatively little wiggle
room to do those adjustments. Smaller disklist entries result in the
ability to do a much finer granularity of adjustment toward that same
amount of tape every night goal. It will take amanda 2 or more runs
thru the tapecycles worth of tapes before this schedule settles down
to only a minor tweek from time to time. You'll get advised of these
actions after the fact in the email report mailed to you when amanda
is done.
>Vicki
This seems like its your first encounter with a *nix like system, so
things are a wee bit different from the way a winderz box might do
it. But you are not rebooting it 4x a day either in case you haven't
noted that yet. No BSOD's allowed in this society. :)
Good luck.
--
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)
99.34% setiathome rank, not too shabby for a WV hillbilly
Yahoo.com and AOL/TW attorneys please note, additions to the above
message by Gene Heskett are:
Copyright 2005 by Maurice Eugene Heskett, all rights reserved.
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