>>>>> On Tue, 17 Apr 2012 07:53:58 +0000, Chris Ord said: > > Greetings list. > > Whilst doing a restore I have discovered a failure on an LTO4 tape in one of > my pools. The error message indicated that the tape drive had changed from > variable to fixed block size. > The tape changer(HP ML4048) can read the barcode correctly. However bacula > claimed that it was not a valid bacula volume. > After a day of googling and reading the manual I tried to recover or list > using bls/bscan/bextract. > In all instances bacula refused to move forward once it had identified that > there was no tape label. > I resorted to btape(always slight scary). Once I had verified that the tape > didn't actually have a label I applied the label to the tape through the > command line tools.** > > > **this was a big mistake - i was in the wrong terminal window and wasn't > concentrating > > A btape status produces this: > btape: btape.c:578 Rewound "Drive_0" (/dev/nst0) > *status > Bacula status: file=0 block=0 > Device status: BOT ONLINE IM_REP_EN file=0 block=0 > btape: btape.c:2138 Device status: 645. ERR= > > And a bextract attempt produces: > [root@fileserver06 ~]# bextract -p -V VARCA038 /dev/nst0 > /mnt/storview/restores/bextract/ > bextract: butil.c:287 Using device: "/dev/nst0" for reading. > 17-Apr 17:36 bextract JobId 0: No slot defined in catalog (slot=0) for Volume > "VARCA038" on "Drive_0" (/dev/nst0). > 17-Apr 17:36 bextract JobId 0: Cartridge change or "update slots" may be > required. > 17-Apr 17:36 bextract JobId 0: 3301 Issuing autochanger "loaded? drive 0" > command. > 17-Apr 17:36 bextract JobId 0: 3302 Autochanger "loaded? drive 0", result is > Slot 1. > 17-Apr 17:36 bextract JobId 0: Ready to read from volume "VARCA038" on device > "Drive_0" (/dev/nst0). > 17-Apr 17:36 bextract JobId 0: End of Volume at file 1 on device "Drive_0" > (/dev/nst0), Volume "VARCA038" > 17-Apr 17:36 bextract JobId 0: End of all volumes. > 0 files restored. > > So that's great because it's labelled correctly,right?
Yes. > So my understanding is btape has written an EOD or EOF? Yes. > Is there a way to 'unmark' it to get at the existing blocks of data? No. Possibly a data recovery company could do it. __Martin ------------------------------------------------------------------------------ Better than sec? Nothing is better than sec when it comes to monitoring Big Data applications. Try Boundary one-second resolution app monitoring today. Free. http://p.sf.net/sfu/Boundary-dev2dev _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
