Dan Langille wrote:
> ganiuszka wrote:
>> Here is a instruction about Dell PowerVault 124T and LUNs under Linux.
>>
>> http://support.dell.com/support/edocs/stor-sys/124t/en/124tvs16/install.html#enabling_lun_linux
>>
>> Subject "Enabling LUN Support in Linux"
>>
>> Maybe this is the solution.
>
> This is what I see now (output slightly altered to make it easier to read):
>
> # cat /proc/scsi/scsi
> Attached devices:
> Host: scsi0 Channel: 00 Id: 08 Lun: 00
>     Vendor: DP       Model: BACKPLANE        Rev: 1.05
>     Type:   Enclosure                        ANSI SCSI revision: 05
>
> Host: scsi0 Channel: 02 Id: 00 Lun: 00
>     Vendor: DELL     Model: PERC 5/i         Rev: 1.03
>     Type:   Direct-Access                    ANSI SCSI revision: 05
>
> Host: scsi1 Channel: 00 Id: 17 Lun: 00
>     Vendor: DELL     Model: MD1000           Rev: A.03
>     Type:   Enclosure                        ANSI SCSI revision: 05
>
> Host: scsi1 Channel: 02 Id: 00 Lun: 00
>     Vendor: DELL     Model: PERC 5/E Adapter Rev: 1.03
>     Type:   Direct-Access                    ANSI SCSI revision: 05
>
> Host: scsi1 Channel: 02 Id: 01 Lun: 00
>     Vendor: DELL     Model: PERC 5/E Adapter Rev: 1.03
>     Type:   Direct-Access                    ANSI SCSI revision: 05
>
>
> ## pretty sure this is the tape drive
>
> Host: scsi2 Channel: 00 Id: 06 Lun: 00
>     Vendor: IBM      Model: ULTRIUM-TD3      Rev: 6B20
>     Type:   Sequential-Access                ANSI SCSI revision: 03
>
>
> ## and that this is the tape changer
>
> Host: scsi2 Channel: 00 Id: 06 Lun: 01
>     Vendor: DELL     Model: PV-124T          Rev: 0043
>     Type:   Medium Changer                   ANSI SCSI revision: 02

Dan, is the changer attached to one of the PERC controllers (which I 
believe are RAID controllers)?

If so, the note in the above mentioned Dell doc (SCSI Bus Requirements) 
  may be the answer:

"NOTE: The autoloader may not work with multiple SCSI LUNS when attached 
to a redundant array of independent disks (RAID) controller. The 
autoloader is not recommended for use with a RAID controller. If this 
problem occurs, it is recommended that the autoloader be attached to a 
separate SCSI bus controller on the server."

"

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