Cameron Matheson wrote:
Hi,
I just got my tape library back online, and I thought backups should be good
to go now, but it seems that maybe all those days that i missed out on backups
have confused amanda or something. No backups occured over the weekend (I had
changed my crontab to make it run 7 days a week), but I didn't get any emails
from amanda over the weekend. I tried running 'amadmin DailySet1 balance', and
it reports the following:
due-date #fs orig KB out KB balance
----------------------------------------------
10/24 Mon 0 0 0 ---
10/25 Tue 0 0 0 ---
10/26 Wed 0 0 0 ---
10/27 Thu 0 0 0 ---
10/28 Fri 20 182596290 182596290 +362.5%
10/29 Sat 6 62085930 62085930 +57.3%
10/30 Sun 4 31671340 31671340 -19.8%
----------------------------------------------
TOTAL 30 276353560 276353560 39479080
(estimated 7 runs per dumpcycle)
"amadmin xx balance" takes the last dumpcycle, and projects that in the
future, in the assumption that the dumpcycle will repeat itself again:
at least, that is what amanda expects to do in the next cycle.
Note the date column is labeled "due-date".
When amanda runs, it first assumes a full dump of only those that
are "due". If planner notes that the total of full dumps is a on
the small side, it looks for "hills" in the future in the dumpcycle,
and will promote some dumps from those hills for the current run.
The above shows that, if the current dumpcycle is the same as the last
one, there will be no full dump on the first 4 days, because in the last
dumpcycle, there was neither a dump in the four last days either,
be it because it was weekend or because you tapedrive broke, amanda
doesn't mind: amanda uses the real world facts, and not the theory
of planning.
The planner will start with 0 due dumps, and will note there is room
for some more full dums, it looks "ahead" and notices that 10/28 is
expected to be very busy day, and starts moving full dumps from that
days to this run, up to about 276353560/7 = 39479080 (total full dumps
divided by runspercycle).
After another full cycle, the dumps will already be spread better.
Amanda continuously shuffles the full dumps, aiming at 0% in the
last column.
How come there is nothing scheduled for Monday-Friday? My crontab is set back
to running amanda Monday-Saturday (does this utitity even read the crontab?
I'm not sure how it works). Anyway, I flushed the old backups (from last week)
to tape w/ no difficulty, so I think it should be able to dump stuff to tape...
I'll run amdump manualy tonight if i can't figure this out, but it would be nice
to figure this thing out.
Thanks!
Cameron Matheson
--
Paul Bijnens, Xplanation Tel +32 16 397.511
Technologielaan 21 bus 2, B-3001 Leuven, BELGIUM Fax +32 16 397.512
http://www.xplanation.com/ email: Paul.Bijnens AT xplanation DOT com
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