On Monday 17 April 2006 16:47, Ross Vandegrift wrote: > On Mon, Apr 17, 2006 at 12:15:07PM +0100, Anne Wilson wrote: > > The DLEs are set to a 4-day rotation, but in practice I > > am seeing level 0 backups almost every other day, for all of them. > > > > It would seem reasonable, to me, based on the small amount of changes, > > to have a level0 weekly, for all of them, I think. > > Hi Anne, > > If you want a level0 weekly why not set your dumpcycle to 7 days? This > basically tells Amanda to try and do weekly level0 backups and > incrementals are okay in between. > > Another thing you can do that helped me out a lot - change the bump > parameters! I work with a fairly large Amanda setup where disk space > is usually at a premium. I was able to save a lot of space by tuning > the bump parameters to do more higher-level incremental backups. > > While the system previously wasted a lot of diskspace in the second > half of the cycle doing level 1 and 2 backups, now it usually bumps > every day, hitting level 5 or 6 by the end of the week. > > Of course you take a hit on restore time, but restores are pretty > decent from virtual tape as it is, so I'm not too concerned about > there being five or six steps instead of two or three.
Here's an example of what I meant about bumping things. home had a level0 on the 7th, 9th, and 10th of April, then Friday, 14th borg /Public 1 0 0 71.1 0:0 165.8 0:0 3740.5 borg /home 0 23329 21026 90.1 83:1 4308.8 82:2 4352.8 borg /home/anne/Photos 1 3 4 -- 0:0 15043.1 0:0 40255.2 with no mention of bumping or promoting. Then Saturday 15th planner: Full dump of borg:/home/anne/Photos promoted from 2 days ahead. planner: Full dump of borg:/Public promoted from 2 days ahead. taper: tape Dailys-17 kb 1968832 fm 3 [OK] Sunday 16th planner: Incremental of borg:/home bumped to level 2. planner: Full dump of borg:/home/anne/Photos promoted from 3 days ahead. planner: Full dump of borg:/Public promoted from 3 days ahead. Monday 17th planner: Full dump of borg:/home/anne/Photos promoted from 3 days ahead. planner: Full dump of borg:/Public promoted from 3 days ahead. I doubt if there has been any change at all in either Photos or Public during that three days. I wish I could see what's going on :-( Anne
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