On Sun, May 31, 2009 at 05:22:44PM -0700, Hugh E Cruickshank wrote: > From: Gene Heskett Sent: May 31, 2009 11:25 > > On Sunday 31 May 2009, Hugh E Cruickshank wrote: > > >From: Jon LaBadie Sent: May 27, 2009 22:34 > > >> > > >> You got stuck on tape five because your tapecycle is 2. It must > > >> use another tape before reusing tape five and for some reason > > >> it isn't getting to another tape. That is why I question the > > >> changer setup. > > > > > >What should tapecycle be set to? > > > > > The number of tapes available for amanda to use. > > I guess that is where my confusion lies. > > I have 5 tapes in slots 1-5 that I am attempting to use as set of > "weekday" level 0 backups (i.e. a full backup each and every weekday > night). > > When I created the DailySet1 I used the command: > > amserverconfig DailySet1 --template tape-changer \ > ?-tapedev /dev/nst0 --changerdev /dev/sg1 --mailto pgi...@forsoft.com \ > --dumpcycle 0 --runspercycle 1 --tapecycle 2 --runtapes 1 > > However amanda.conf now has: > > dumpcycle 1 week > runspercycle 1 > tapecycle 2 > runtapes 1 > > and changer.conf has: > > firstslot=1 > lastslot=5 > driveslot=0 > havereader=1 > > Should I change dumpcycle back to 0 and tapecycle to 1 or what? >
Dumpcycle is how frequently you want full backups. You want a dumpcycle 0 (no units) to force full backups every run. As your dumpcycle is so short, your runspercycle is only 1. You also want a runtapes of 1 if you don't want want amanda to go to a second tape during the same run. * As you have 5 labeled tapes in rotation tapecycle 5 is reasonable. ** It will then have to use all five tapes before reusing the first. You asked about tapes that had "empty incrementals". If amanda recognized the tape, loaded the tape, but did not write any backup data to the tape, amanda still considers the tape "used". * Setting runtapes greater than the number expected to be used is reasonable. That way if one day you get a monster dump, amanda can write it to the next tape. And if there was a glitch writing the first tape, amanda can go to a second tape. ** Your tapecycle can be lower than the number of tapes actually in rotation. If your tapecycle exactly matches tapes and some glitch makes the next tape unusable, amanda can't write to any tapes. Some amanda admins (myself included) set tapecycle to a value lower than the actual number of tapes in rotation. jl -- Jon H. LaBadie j...@jgcomp.com JG Computing 12027 Creekbend Drive (703) 787-0884 Reston, VA 20194 (703) 787-0922 (fax)
