I've always had a problem with mtx-changer regarding this issue. Even
when I'm running the SD as root, my tape drives always show "Device
busy" when I do an 'mt -f /dev/rmt/0cbn status'. The drives are always
busy while bacula-sd is running, with or without tapes in the drives and
not performing any backups.
Therefore, I'm always stuck waiting 180 seconds for the timeout when I
want to load a tape. The tapes load just fine, but the drive won't ever
settle down and show "ONLINE" ("0x0" in my case) while the SD is
running. I've changed the timeout to 60 seconds to ease the pain.
This problem affects other parts of Bacula that request the drive
status. When I first start the SD, I have to wait for the timeout
period for both drives before I can do anything. Does Bacula put some
kind of lock or hog resources of the tape drives that prevents showing
the tape status correctly? When I was running Legato Networker, I was
always able to do mt -f /dev/rmt/0cbn status while Legato was running
and the drive was idle.
My setup is:
Solaris 9
L25 Autochanger with two SDLT 320 drives
Bacula 1.38.5
Thanks,
Ray
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Arno
Lehmann
Sent: Friday, March 10, 2006 5:13 AM
To: bacula-users@lists.sourceforge.net
Subject: Re: [Bacula-users] tape will not eject after finishing backup
Hello,
On 3/10/2006 11:00 AM, david robert wrote:
> these are the two places i can see this function can we increse these
> time or
You'd use this snippet in your script.
> wait_for_drive() {
> for i in $(seq 180); do # Wait max 180 seconds
> if mt -f $1 status | grep ONLINE >/dev/null 2>&1; then
# and, before you implement this, make sure your tape drive status
# is actually ONLINE after unmount from Bacula.
> break
> fi
> # echo "Device $1 - not ready, retrying..."
> sleep 1
> done
> }
Also, one thing I overlooked in my previous post: With a DLT drive, you
can't usually eject the cartridge after rewinding, you have to offline
the drive, too. The combined command 'mt rewoffline' might thus already
solve your problem.
Arno
> ------------
>
> # wait_for_drive $device
> sleep 15
> exit $rtn
> ;;
>
> thanks for your help
>
> */Arno Lehmann <[EMAIL PROTECTED]>/* wrote:
>
> Hello,
>
> On 3/10/2006 10:29 AM, Gavin Conway wrote:
> > Hi,
> >
> > I'm seeing the same problem using a very similar script. Also
using
> > Debian Sarge 3.1 with the latest version of Bacula. I think
this
> is more
> > to do with Bacula not having finished with the tape drive when
the
> > script runs.
> >
> > If anyone knows how this goes let me know.
>
> If you are right with your suspicion, you could wait for the tape
to
> become available before executing the commands. In the mtx-changer
> script, there's a function wait_for_drive which you could use as a
> template. Basically, it checks if the drive is ready, and if it
> isn't it
> waits some time and loops.
>
> Arno
>
> > Thanks,
> > Gavin
> >
>
> --
> IT-Service Lehmann [EMAIL PROTECTED]
> Arno Lehmann http://www.its-lehmann.de
>
>
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