Re: [Bacula-users] Can't find the tape changer

Dan Langille wrote:
> I'm helping a client with a Linux system.  I see the tape drive, but 
> cannot find the tape changer.  Clues please.
> 
>  From dmesg:

Also:

Linux version 2.6.9-78.0.8.plus.c4smp (mockbuild AT builder10.centos DOT org) 
(gcc version 3.4.6 20060404 (Red Hat 3.4.6-10)) #1 SMP Thu Nov 27 
19:19:34 EST 2008

And there is no /dev/changer*

> 
> scsi2 : ioc0: LSI53C1030, FwRev=01032700h, Ports=1, MaxQ=255, IRQ=169
>    Vendor: IBM       Model: ULTRIUM-TD3       Rev: 6B20
>    Type:   Sequential-Access                  ANSI SCSI revision: 03
>    Vendor: DELL      Model: PV-124T           Rev: 0043
>    Type:   Medium Changer                     ANSI SCSI revision: 02
> st: Version 20040403, fixed bufsize 32768, s/g segs 256
> Attached scsi tape st0 at scsi2, channel 0, id 6, lun 0
> st0: try direct i/o: yes (alignment 512 B), max page reachable by HBA 
> 4503599627370495
> Attached scsi generic sg0 at scsi0, channel 0, id 8, lun 0,  type 13
> Attached scsi generic sg1 at scsi0, channel 2, id 0, lun 0,  type 0
> Attached scsi generic sg2 at scsi1, channel 0, id 17, lun 0,  type 13
> Attached scsi generic sg3 at scsi1, channel 2, id 0, lun 0,  type 0
> Attached scsi generic sg4 at scsi1, channel 2, id 1, lun 0,  type 0
> Attached scsi generic sg5 at scsi2, channel 0, id 6, lun 0,  type 1
> Attached scsi generic sg6 at scsi2, channel 0, id 6, lun 1,  type 8
> 
> 
> cat /proc/scsi/scsi includes this:
> 
> Host: scsi2 Channel: 00 Id: 06 Lun: 01
>    Vendor: DELL     Model: PV-124T          Rev: 0043
>    Type:   Medium Changer                   ANSI SCSI revision: 02
> 
> The above makes me think sg6 is the changer... but no luck:
> 
>  From mtx and mt:
> 
> # mtx -f /dev/sg6 inquiry
> Product Type: Medium Changer
> Vendor ID: 'DELL    '
> Product ID: 'PV-124T         '
> Revision: '0043'
> Attached Changer: No
> 
> # mt -f /dev/st0 status
> SCSI 2 tape drive:
> File number=0, block number=0, partition=0.
> Tape block size 0 bytes. Density code 0x44 (no translation).
> Soft error count since last status=0
> General status bits on (41010000):
>   BOT ONLINE IM_REP_EN
> 
> 
> ]# mtx -f /dev/sg6 status
> mtx: Request Sense: Long Report=yes
> mtx: Request Sense: Valid Residual=no
> mtx: Request Sense: Error Code=0 (Unknown?!)
> mtx: Request Sense: Sense Key=No Sense
> mtx: Request Sense: FileMark=no
> mtx: Request Sense: EOM=no
> mtx: Request Sense: ILI=no
> mtx: Request Sense: Additional Sense Code = 00
> mtx: Request Sense: Additional Sense Qualifier = 00
> mtx: Request Sense: BPV=no
> mtx: Request Sense: Error in CDB=no
> mtx: Request Sense: SKSV=no
> READ ELEMENT STATUS Command Failed


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