Re: [Bacula-users] bextract - How To Eject and Load Next Volume?

Mon, 03 Oct 2005 12:14:33 -0700

I also have have learned I have to stop bacula (likely the bacula-sd daemon) to use either 'mt -t /dev/st0 COMMAND' or 'btape ... ' for testing. It appears that bacula has the device in use because I defined it already in the bacula-sd.conf file. It is likely documented some where but I didn't see it near the "Testing your Tape Drive with Bacula" section. It took me a little while to realize that.  :) That seems to take care of the resource busy error for me. However, as Maria notes, it likely doesn't help the rest...

Dean


On Oct 3, 2005, at 11:40 AM, Maria McKinley wrote:

You've probably already tried this, but I have had a problem occasionally before of getting the device busy error when trying to use mt-st, and just stopping the bacula daemons has gotten rid of it.  Worth a shot, anyhow, if you haven't tried already.  Doesn't answer the rest of your question, though.

-m

Arno Lehmann wrote:

Hello,
On 02.10.2005 17:50, Drew Tomlinson wrote:

I'm still stuck on this.  Any attempts to eject the tape with 'mt' or 'camcontrol' result in 'device busy' errors.  Thus I assume that bextract has a hold of the device and won't let the tape eject.  Is there some config or command line option that I need to add so bextract will eject the tape at the end of each volume?

I'd really appreciate any thoughts, suggestions, or RTFM pointers as I lost a couple drives and just want to put all the data stored on these tapes back on my system.  Unfortunately the catalog was lost as well.

Unfortunately, I don't remember any information usefule for you, and I never tried bextract like that...
Now, I assume you're in sort of an emergency. You could try the development version - there were some changes in drive locking and release, and hopefully they also affect bextract. Or you use your drive's "emergency eject" feature if it has one - the drives I know do this after holding the eject button a long time.
An easier solution might be to bextract from the volumes one at a time, ignore the problems at tape traversal, hope everything works, and then restore the jobs crossing tape boundaries again.
Or you set up a "full" bacula install first and bscan all the tapes into the catalog - that might take longer, though.
Arno

Thanks,

Drew

On 9/29/2005 12:03 PM Drew Tomlinson wrote:


I'm running FreeBSD 5.4 and using bextract 1.36.3 to restore multiple tape volumes to a drive I lost.  It's giving me the following message:

29-Sep 10:39 bextract: End of Volume at file 16 on device /dev/nsa0, Volume "TAPE-0003|TAPE-0004|TAPE-0005|TAPE-0006|TAPE-0010|TAPE-0011|TAPE-0012"
29-Sep 10:39 bextract: bextract Warning: Wrong Volume mounted on device /dev/nsa0: Wanted TAPE-0004 have TAPE-0003
Mount Volume "TAPE-0004" on device /dev/nsa0 and press return when ready:

OK, I understand it wants me to mount the next volume.  However I can not get the drive to eject the tape.  It's an HP DLT-30 drive.  I press the eject button on the drive but get no response.  Any attempts to use the 'mt' program from FreeBSD result in a "device busy" error.  What should I try next?

Here's the relevant part of my storage daemon conf file:

---BEGIN---
Device {
 Name = "HP DLT 30"
 Media Type = DLT
 Archive Device = /dev/nsa0
 LabelMedia = yes;                   # lets Bacula label unlabeled media
 AutomaticMount = yes;               # when device opened, read it
 AlwaysOpen = yes;
 RemovableMedia = yes;
 RandomAccess = no;
# From the port info:
# Due to lack of some features in the FreeBSD tape driver
# implementation you MUST add some OS dependent options to
# the bacula-sd.conf file:

 Hardware End of Medium = no;
 Backward Space Record = no;
 Backward Space File = no;

# With 2 filemart at EOT (see man mt):
 Fast Forward Space File = no;
 BSF at EOM = yes;
 TWO EOF = yes;

}
---END---

Any ideas?

Thanks,

Drew







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