So a few weeks ago, I finally got around to implementing (as recorded
either here in amanda-users or in -hackers; I forget) a separate
"Offsite" configuration that runs on Sundays, and does a full backup of
everything (with "no-record"). Since I had been able to (just barely!)
run amanda with a dumpcycle of 2 days, I figured that I should normally
be able to get the full ("Offsite") backup in 2 tapes... so I defined a
runtapes value of 3.
Well, as it happened, one of the file systems I back up is hovering right
around 12 GB. And as luck would have it, amanda would typically get about
30 - 35 GB on the first tape before this file system was ready to be taped.
Then taper would try to write this backup image to tape, and eventually
fail, only to re-start on the next tape (all as expected). But that would
leave a bunch of wasted space on the end of that first tape, with the
result that the Offsite backups would actually require all 3 tapes.
Friday, I added another system to the set of backups -- one that is on
our perimeter net (and thus, subject to firewall restrictions). I was
able to use the "Firewall" entry in the FAQ-o-matic (thank you!), and
then today, for the Offsite backup -- as I half-suspected -- the timing
was such that the 12 GB file system wasn't ready to be taped until amanda
had switched to the second tape already.
So now, because I added another bunch of file systems (including one that
is 3.5 GB used), the Offsite backup only used 2 tapes.
Go figure. :-)
(Tape chunking should address this rather nicely, of course....)
Anyway, I thought that some folks might find that vaguely amusing:
>These dumps were to tapes E000015, E000016.
>The next 3 tapes Amanda expects to used are: E000017, E000018, E000019.
>
>
>STATISTICS:
> Total Full Daily
> -------- -------- --------
>Estimate Time (hrs:min) 0:36
>Run Time (hrs:min) 15:25
>Dump Time (hrs:min) 213:22 213:22 0:00
>Output Size (meg) 74162.4 74162.4 0.0
>Original Size (meg) 141433.4 141433.4 0.0
>Avg Compressed Size (%) 44.3 44.3 --
>Filesystems Dumped 150 150 0
>Avg Dump Rate (k/s) 98.9 98.9 --
>
>Tape Time (hrs:min) 3:49 3:49 0:00
>Tape Size (meg) 74167.1 74167.1 0.0
>Tape Used (%) 211.9 211.9 0.0
>Filesystems Taped 150 150 0
>Avg Tp Write Rate (k/s) 5517.6 5517.6 --
Cheers,
david
--
David Wolfskill [EMAIL PROTECTED] UNIX System Administrator
Desk: 650/577-7158 TIE: 8/499-7158 Cell: 650/759-0823
I need help: http://www.whistle.com/employment/employ-engg.html#K030391
>From [EMAIL PROTECTED] Sun Jan 14 17:20:37 2001
>Date: Sun, 14 Jan 2001 17:18:37 -0800 (PST)
>From: System Operator <[EMAIL PROTECTED]>
>To: [EMAIL PROTECTED]
>Subject: Whistle Communications AMANDA MAIL REPORT FOR January 14, 2001
>
