Arno Lehmann wrote:
> Hi,
>
> On 6/30/2006 6:18 PM, Jeff Dickens wrote:
>
>> I have an IBM VS160 tape drive.
>>
>> First I exercised the drive with tar & it seems to work fine.
>>
>> I added the following device definition to my bacula-sd.conf:
>>
>> Device {
>> Name = VS160-1 #
>> Media Type = VS160
>> Archive Device = /dev/nst0
>> AutomaticMount = yes; # when device opened, read it
>> AlwaysOpen = yes;
>> RemovableMedia = yes;
>> RandomAccess = no;
>> # Enable the Alert command only if you have the mtx package loaded
>> Alert Command = "sh -c 'tapeinfo -f %c |grep TapeAlert|cat'"
>> }
>>
>
> Looks good so far.
>
>
>> I then restarted the sd.
>>
>> I did "btape -c /usr/bin/bacula/bacula-sd.conf /dev/nst0"
>>
>> and got the
>>
>> Tape block granularity is 1024 bytes.
>> btape: btape.c:XXX Using device: /dev/nst0
>>
>> (I put in the XXX because I think it was a different line number)
>>
>> I don't think the asterisk prompt ever appeared. I typed "test" and hit
>> return.
>> Nothing happened for several minutes and the tape didn't move.
>>
>> Eventually I control-C'd out of it.
>>
>> Subsequent tape accesses (mt or tar) yield:
>>
>> /dev/nst0: Device or resource busy
>>
>
> Yup.
> The SD holds the tape drive open ("AlwaysOpen = yes;") so no other
> program can access it. Either unmount the device using bconsole, or stop
> the SD to run other programs accessing the tape drive.
>
>
>> I looked in my messages log and see this:
>>
>> Jun 30 11:36:43 otter kernel: st0: MTSETDRVBUFFER only allowed for root.
>>
>
> This is - more or less - only informational. Searching the list, you
> will find many mails with this message, but you won't find any
> indication that the reported limitation causes any real problems. AFAIK etc.
>
>
>> Any ideas ? This tape drive is used nightly by Backup Edge and gets
>> successful bit-level verifies of sets over 100GB.
>>
>> I'm thinking I'll have to reboot to get my tape drive back now.
>>
>
> No. Definitely not. Either 'kill `cat /var/run/bacula-sd.etc.`' or
> 'umount DEVICENAME' in bconsole, for example.
>
> Arno
>
>
Thanks for the background.. I will have to remember to unmount or maybe
not automatically mount, as long as I'm depending on Backup Edge.
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