On Fri, 12 Feb 2010 16:59:46 +0100
Daniel Kamm <ylz AT ylz DOT ch> wrote:
> Dear all,
>
> I need some hints, ideas whatever. I have a Quantum Scalar i40 with two
> separate LTO-4 SAS drives. I've conneced the drives with two SAS cables
> to two separate SAS controller within the backup server.
>
> # cat /proc/scsi/scsi
> Attached devices:
> Host: scsi4 Channel: 00 Id: 00 Lun: 00
> Vendor: HP Model: Ultrium 4-SCSI Rev: U51Z
> Type: Sequential-Access ANSI SCSI revision: 05
> Host: scsi4 Channel: 00 Id: 00 Lun: 01
> Vendor: QUANTUM Model: Scalar i40-i80 Rev: 100G
> Type: Medium Changer ANSI SCSI revision: 03
> Host: scsi5 Channel: 00 Id: 00 Lun: 00
> Vendor: HP Model: Ultrium 4-SCSI Rev: U51Z
> Type: Sequential-Access ANSI SCSI revision: 05
>
> So far, so good, but mtx is not willing to see the second drive:
>
> # mtx -f /dev/sg1 status
> Storage Changer /dev/sg1:1 Drives, 29 Slots ( 5 Import/Export )
> Data Transfer Element 0:Full (Storage Element 20 Loaded):VolumeTag =
> MZ2019
> Storage Element 1:Empty:VolumeTag=
> Storage Element 2:Empty:VolumeTag=
> [..]
>
Yes, there should be a "Data Transfer Element 1" there.
> And mtx is not willing to load a tape into the second drive:
>
> # mtx -f /dev/sg1 load 22 1
> illegal <drive-number> argument '1' to 'load' command
>
> Any ideas what I did wrong? Any hints where I can start debugging?
> Because since Baculas mtx-changer is using mtx, I think I am not able to
> use the second drive.
>
Check dmesg for relevant messages and do something like
ls -lah /dev/*st*
to see if they're there?
Regards,
--
Alex Chekholko chekh AT pcbi.upenn DOT edu
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