>>>>> On Mon, 08 May 2006 11:16:18 +0800, Troy Daniels <[EMAIL PROTECTED]> said: > > Greetings, > > I have a question about Verification Jobs that I thought I'd throw to > the community. > > Basically I need to know how fast a verification job should be compared > to the backup it's verifying. > > Here's the setup: > > I run a full backup of several servers on Friday nights to an LTO-2 > Autochanger. > I then go back and verify 4 of these backups with Volume to catalog > verify jobs. > > The full backup of my file server took 7 hours 15 minutes on the weekend > just gone. The verify of the same job took 6 hours 58 minutes (almost as > long as the backup!) > > I expected it to be faster than the backup (well more than 17 minutes > faster anyway) because I'm not dealing with the FD at all, and am just > scanning the tape. > > Am I mistaken in this, or is this verify job taking longer than you'd > expect? > > Can anyone who performs these jobs confirm whether I should expect them > to take as long as the backup?
For me, the time ratio of backup:verify is about 2:1, but the backup time includes software compression so your 1:1 doesn't look unreasonable. Verify has to query the database as well as the tape, so that can slow it down. Check that you have the correct indexes in the catalog. > On a related note - A couple of weeks ago I had a server unexpectantly > offline over the weekend and the verify job failed because it couldn't > connect to the File Daemon! This confused me as the system was comparing > the volume to the catalog and shouldn't have needed to talk to the file > daemon at all. > > Would the FD have been contacted as part of a standard job handshake > process and then left out of the loop, or is it actually used when > performing the volume -> catalog compare? Yes, the FD does actually runs the verification, passing certain information from the SD back to the Director. __Martin ------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
