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Re: [Bacula-users] Bacula-SD hang using IBM Ultrium 3581 Library
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From: jay <tit...@gm...> - 2007-10-23 19:09:16
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I was using unmount from bconsole to unmount the tape. It was not releasing
it. That is what is confusing me. But your saying it should. So its even
more perplexing now. Release seems to do what I want. It unmounts the
tape, and releases the drive. But the word" unmount" seems more intuitive
to me than "release".
Jay
On 10/23/07, Arno Lehmann <al...@it...> wrote:
>
> Hi,
>
> 23.10.2007 20:21,, jay wrote::
> > Thanks Blake,
> >
> > You are correct, it seems when I run an unmount, the drive goes into
> > this state
> >
> > Jobs waiting to reserve a drive:
> > 3604 JobId=25 device "Drive-0" (/dev/nst0) is BLOCKED due to user
> > unmount.
> >
> > Device status:
> > Autochanger "Autochanger" with devices:
> > "Drive-0" (/dev/nst0)
> > Device "FileStorage" (/tmp) is not open.
> > Device "Drive-0" (/dev/nst0) is not open.
> > Device is BLOCKED. User unmounted.
> > Drive 0 status unknown.
> >
> >
> > If i restart the bacula-sd daemon, the status is now
> >
> > Device status:
> > Autochanger "Autochanger" with devices:
> > "Drive-0" (/dev/nst0)
> > Device "FileStorage" (/tmp) is not open.
> > Device "Drive-0" (/dev/nst0) is not open.
> > Drive 0 status unknown.
> >
> > So that appears to be the problem. And my next question is, "release"
> > is the proper way to unmount a tape from the drive? It appears to work,
> > I'm just trying to understand the difference. Thanks a lot
>
> The difference is that 'umount' unloads the tape and then releases the
> drive for use by other programs. 'release' only releases the drive and
> informs the SD of the fact that it has to ensure proper tape
> positioning when it starts using the tape again.
>
> Your original problem seems to be that you didn't notice you have to
> mount the storage after manually unmounting it. Bacula does not send a
> reminder mail in these cases, because the operator is expected to know
> if the tape was manually unmounted :-)
>
> So, in general: If you unmount a storage device, you have to mount it
> again. The current status is, as stated, easily checked with the 'sta
> sd' command.
>
> Arno
>
> > Jay
> >
> >
> > On 10/23/07, *Blake Dunlap* <bl...@is... <mailto:bl...@is...>>
> wrote:
> >
> > If you run a "status storage" when this is occurring, I believe you
> > will see that the drive is unmounted and offline by user. Mounting a
> > tape, or instead using the "release" command to unmount tapes should
> > solve your problem if this is the case.
> >
> >
> >
> > *From:* bac...@li...
> > <mailto:bac...@li...>
> > [mailto:bac...@li...
> > <mailto:bac...@li...>] *On Behalf Of
> *jay
> > *Sent:* Tuesday, October 23, 2007 11:16 AM
> > *To:* bac...@li...
> > <mailto:bac...@li...>
> > *Subject:* [Bacula-users] Bacula-SD hang using IBM Ultrium 3581
> Library
> >
> >
> >
> > Hello,
> >
> > I'm having a peculiar problem with an IBM Ultrium 3581 autochanger
> > and the SD daemon. I have to restart the SD daemon after I unmount
> > a tape, or the next job hangs and never starts.
> >
> > We currently have a single LTO2 drive in the library, and are
> > running Bacula 2.2.5 on a Redhat Enterprise Linux 4 update 5 IBM
> > server. I ran all the btape tests, including the multiple tape test
> > for autochangers, and they all worked flawlessly. Not a single
> > problem or error reported. I am able to use the mtx script and mt
> > successfully as well. Mtx reports all the proper tapes in the
> > library, and I can mount a tape and WEOF and REWIND it using mt.
> > Things look great at this point. Next, I ran "label barcodes" and
> > it labeled all the tapes in the library properly. Again, no
> > problems. I decided at this point to modify the "Full OS Set"
> > backup for our environment and run some tests. I can successfully
> > run the backup the first time. It pulls a tape from the proper pool
> > inside the library, backup works. But if I unmount the tape in
> > bconsole, and try and run the same backup again, it hangs. Nothing
> > happens. I have waited several hours and nothing ever times out. I
> > finally have to cancel the job manually. I discovered that by
> > restarting bacula-sd that I can then re-run the job immediately
> > without any problems.
> >
> > I'm not sure what could be causing this, or how to even
> > troubleshoot. Things seem to work great during all tests and doing
> > a backup, Bacula just doesn't like it when I unmount a tape
> manually.
> >
> > Could someone offer some advice or debugging steps I could take to
> > figure this out? Below is a copy of my bacula-sd.conf file. I can
> > post other config files if I need to. Thanks
> >
> > Jay
> >
> >
> > ---- bacula-sd.conf ---
> >
> > Storage {
> > Name = server1-sd
> > SDPort = 9103
> > WorkingDirectory = "/var/lib/bacula"
> > Pid Directory = "/var/run"
> > Maximum Concurrent Jobs = 20
> > SDAddress = 192.168.1.20 <http://192.168.1.20>
> > }
> >
> > Director {
> > Name = server1-dir
> > Password = "xxxx1234xxxx"
> > }
> >
> > Director {
> > Name = server1-mon
> > Password = "xxxx1234xxxx"
> > Monitor = yes
> > }
> >
> > Device {
> > Name = FileStorage
> > Media Type = File
> > Archive Device = /tmp
> > LabelMedia = yes;
> > Random Access = Yes;
> > AutomaticMount = yes;
> > RemovableMedia = no;
> > AlwaysOpen = no;
> > }
> >
> > Autochanger {
> > Name = Autochanger
> > Device = Drive-0
> > Changer Device = /dev/sg1
> > Changer Command = "/etc/bacula/mtx-changer %c %o %S %a %d"
> > }
> >
> > Device {
> > Name = Drive-0
> > Drive Index = 0
> > Media Type = LTO2
> > Archive Device = /dev/nst0
> > AutomaticMount = yes;
> > AlwaysOpen = yes;
> > RemovableMedia = yes;
> > RandomAccess = no
> > AutoChanger = yes
> > }
> >
> > Messages {
> > Name = Standard
> > director = server1-dir = all
> > }
> >
> >
> >
> > ------------------------------------------------------------------------
> >
> >
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> >
> > ------------------------------------------------------------------------
> >
> > _______________________________________________
> > Bacula-users mailing list
> > Bac...@li...
> > https://lists.sourceforge.net/lists/listinfo/bacula-users
>
> --
> Arno Lehmann
> IT-Service Lehmann
> www.its-lehmann.de
>
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