Debra, Charles, Jon, I had some 'large' vtapes for a while, and had a requirement for N-days of recovery and ran into an issue were I was getting deadlocked on space during backup. If the vtapes were too small I consumed more of them, if they were too large then I'd might not have enough free space when one of them was reused, not certain why but it may have been that level 0 was advanced more frequently because of the "available" tape capacity, which is measured by tape size and does not take vtape pool volume into account.
100% right, vtapes leave unused space in the pool, but some vtape size tuning may be needed. Thanks, Brian -----Original Message----- From: owner-amanda-us...@amanda.org <owner-amanda-us...@amanda.org> On Behalf Of Debra S Baddorf Sent: Friday, September 17, 2021 5:28 PM To: Charles Curley <charlescur...@charlescurley.com> Cc: Debra S Baddorf <badd...@fnal.gov>; amanda-users <amanda-users@amanda.org> Subject: Re: DLE splitting ATTENTION: This email came from an external source. Do not open attachments or click on links from unknown senders or unexpected emails. > On Sep 17, 2021, at 12:57 PM, Charles Curley > <charlescur...@charlescurley.com> wrote: > > On Fri, 17 Sep 2021 11:55:09 -0400 > Jon LaBadie <j...@jgcomp.com> wrote: > >> I'm seeing instances of wasted VTape with amanda switching >> to a new tape for the last DLE even though there is room >> left on the current tape. > > I wouldn't worry about it. Unlike physical tapes, vtapes all pull > storage out of the same pool. You might create some more vtapes so you > have plenty for your storage. > And, as I understand it, vtapes don’t actually require more space than is actually ON them. I.E. Empty space is still owned by the vtape manager. Which is what Charley said, but in different words. Deb Baddorf Fermilab > -- > Does anybody read signatures any more? > > https://urldefense.proofpoint.com/v2/url?u=https-3A__charlescurley.com&d=DwICAg&c=gRgGjJ3BkIsb5y6s49QqsA&r=HMrKaRiCv4jddln9fLPIOw&m=PwvWx6Y9I4KUy_b5D3jsXMnkbLiq7ulFG5J1JzobJeY&s=lljOS8dvUO1Mot2mr72DNZxuu8f_j1tqh0kSizkJc18&e= > https://urldefense.proofpoint.com/v2/url?u=https-3A__charlescurley.com_blog_&d=DwICAg&c=gRgGjJ3BkIsb5y6s49QqsA&r=HMrKaRiCv4jddln9fLPIOw&m=PwvWx6Y9I4KUy_b5D3jsXMnkbLiq7ulFG5J1JzobJeY&s=3vxiQwgUx4Am7JAOXEQ7z-J2yfWqyCtBxy2fvA7FyJs&e=
