Re: [Bacula-users] bscan-problems

[Jonas Mixter]

Hi again... Thanks for your quick answer! I understand the details of my problem better now... I do have some more questions though. 28-Nov 14:42 bscan: bscan Error: block.c:264 Volume data error at 0:1! Wanted ID: "BB02", got "". Buffer discarded. ...and then bscan exits. You should try running the btape "test" command. I've tested my drive when installing this new machine, but ran the command again just to be sure. It says all is OK... I also ran the command on the old machine and it failed! I've been using this installation for over a year so I cannot recall if I ever ran the bscan test when installing (probably not I'm afraid). I can both backup and restore on the old machine though... (Tried to restore some files from one of the old tape a few minutes ago, all went fine.) All the old tapes are written using bacula 1.34.2 (or perhaps an even older version) and I'm now using 1.36.2 (shipped with Debian). Is there a difference in the format on the tapes? No, not that I am aware of. However, Bacula does set your tape drive to variable block format if that is what your Device statement specifies, whereas 1.34.2 does not do that. Depending on how your machine initializes the tape drive, this could create some incompatibilities ... The manual goes into these questions in more detail and suggests some ways of dealing with it. I read http://bacula.org/rel-manual/Testing_Your_Tape_Drive.html and wonder if I could see if variable or fixed blocksize were used on the old machine. I also wonder if I could specify a fixed blocksize in bacula-sd.conf to be able to restore from the old tapes. I cannot change the bootstrap file as suggested since the volume is not in the catalog. I need to use bscan to get it into the catalog first... Are my old tapes useless or is there any way to use them on the new machine? If it's not possible to read the tapes on the new machine, is it a workable solution to use bcopy to get the data into a file on the old machine and then copy it all back to tape on the new machine? Best regards, Jonas Mixter