On Wed, Sep 27, 2006 at 09:06:32AM -0400, Jeff Portwine enlightened us: > Hoping somebody can clarify something about amanda for me. > > I have my backups set to run on a 3 day dump cycle with 6 tapes, running > every evening except sunday night. It seems to work fine, we change the > tape each morning so over the course of a week (if I understand how amanda > works right) we get two sets of full backups. Sometimes we forget to change > a tape, and most Saturdays we don't have anybody here to change the tape so > on those days I thought that Amanda just backed up to the holding disk and > then the next morning we could just change the tape, do an amflush, then > change the tape again so that it would be ready for the next night. > > However, I've noticed that every time Amanda doesn't find a writeable tape > (usually due to the tape not being changed that day) there is very little > data written to the holding disk and the amflush is very very small. The > day after this, the dump is much larger than usual compensating for this. > When we change the tapes every day, each tape is usually around 50% full. > On a day when we forget to change the tape or are unable to change the tape > the amflush results in about 0.5% tape useage, and the day following the day > we did the amflush tape useage is usually 85-90%. Is this how it's supposed > to behave? How can I fix it to do a normal dump to the holding disk on days > when either we can't change the tape or we forget to change the tape? > > Thanks for any explanation and/or tips. >
What settings do you have for your holding disk in amanda.conf? Specifically the reserve setting. Matt -- Matt Hyclak Department of Mathematics Department of Social Work Ohio University (740) 593-1263