How is your concurrency configured? If you only have one concurrent job, the
actual dates you have in your schedule aren't related to reality in the first
place. If that is your configuration, your backups aren't going to run on
Saturday anyway, but on Sunday or whenever the full backups are finished. That
means that the exact time you schedule the differentials doesn't matter. Just
schedule them to start five minutes after the fulls (at 22:10), and with a
lower priority.
Kevin Keane
The NetTech
(North County Tech Center, LLC dba The NetTech)
760-721-8339
http://www.4nettech.com
-----Original Message-----
From: hymie! [mailto:hymie AT lactose.homelinux DOT net]
Sent: Monday, April 25, 2011 9:43 AM
To: bacula-users AT lists.sourceforge DOT net
Subject: [Bacula-users] friday vs saturday
So I have four machines whose full backups take more than 24 hours.
As an additional problem, one of those 4 machines takes 12 hours just to do an
Incremental/Differential backup. (The full backup takes 43
hours.)
I had the idea that I would assign each machine its own Friday to do a full
backup, where no other backups would take place. Then on Saturday, each of the
machines that didn't just do a full backup would do a Differential backup.
Finally, incrementals the rest of the week.
I was just about to set up schedules for these boxes that look something like
this:
Schedule {
Name = "1stFridayFull"
Run = Full 1st fri at 22:05
Run = Differential 2nd-5th sat at 22:05
Run = Incremental sun-thu at 22:05
}
Schedule {
Name = "2ndFridayFull"
Run = Full 2nd fri at 22:05
Run = Differential 1st sat at 22:05
Run = Differential 3nd-5th sat at 22:05
Run = Incremental sun-thu at 22:05
}
But then I realized -- sometimes, the day after the 1st Friday is the 2nd
Saturday.
(caution: monospaced font ahead)
October 2011
Su Mo Tu We Th Fr Sa
1
2 3 4 5 6 7 8
9 10 11 12 13 14 15
16 17 18 19 20 21 22
23 24 25 26 27 28 29
30 31
So it seems that, on Fri 7 October, my 1stFriFull machine will do a full
backup; on Sat 8 October, that same machine will do a Differential backup.
Meanwhile, my 2ndFriFull machine will do a Differential on Sat 1 October,
incrementals during the week, nothing at all on the 7th or 8th, more
incrementals, before finally doing a Full backup on the 14th...
again followed immediately by a Differential backup on the 15th.
Is there a way to avoid this problem and accomplish what I want to accomplish?
The only thing that comes to mind is with unusual time math, such as
scheduleing my Differential backups for Friday at 46:05; but I doubt that
Bacula supports this.
--hymie! http://lactose.homelinux.net/~hymie hymie AT lactose.homelinux
DOT net
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The most intuitive, comprehensive, and cost-effective network
management toolset available today. Delivers lowest initial
acquisition cost and overall TCO of any competing solution.
http://p.sf.net/sfu/whatsupgold-sd
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