On Tuesday 20 March 2007 14:39, Ekkehard Burkon wrote: > Hi, > > I'm trying to get a backup server up and running with debian sarge as > base system and approx 2TB of disk storage on a raid 5 array on a > 3ware 9000 controller. > > The backups seem to be OK. But each restore fails with something > like: > > 20-Mär 15:08 backup-sd: RestoreFiles.2007-03-20_15.04.19 Error: > block.c:317 Volume data error at 0:1057751179! > Block checksum mismatch in block=47651 len=65536: calc=509e0cbd blk=a7b3df8 > > The volumes are limited to 25GB per file and I tried it with > and without fixed block size. > > I first tried it with a plain vanilla bacula as is distributed > with debian. Then I built 1.38.11 from scratch and now 2.0.3. > > We had quite some trouble with that on FreeBSD which we use > for most of the other stuff and were able to solve it by moving > to Debian. > > But this time this debian box fails too. The client I currently test > with is on a debian box and currently is 2.0.3 too. > > I slowly start to think that this might be a problem related to > the 3ware driver. Since this is the only thing that is the same > on all our boxes. > > Any help is appreciated since I'm pretty desperate right now.
Two things: 1. Something seems wrong (possibly with your configuration). By default Bacula writes blocks of 64,512 bytes and not 65536 as indicated above on the error message. This makes me wonder. In any case, I don't recommend that you change the default -- especially when using disk storage without doing careful performance testing. 2. 99.9% of the time, if you are getting checksum errors on a disk, you have a bad disk, or in this case, possibly a bad disk driver (much less often, bad RAM). I recommend that you try doing a backup/restore of a small amount of data (e.g. 100MB) to a standard Debian fixed disk formatted with ext3. That will give you a good base of information. If you get the same errors, then it is most likely your conf file, and I would *definitely* like to see it. Otherwise you can duplicate the conf on the disk storage device and repeat the test using a small amount of data to start with. ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
