---------- Forwarded message ----------
From: John Drescher <drescherjm AT gmail DOT com>
Date: Fri, Oct 31, 2008 at 2:40 PM
Subject: Re: [Bacula-users] No tar for my tape drive!?!? SAS tape
library help...
To: Michael Kahle <gnunix AT yahoo DOT com>


On Fri, Oct 31, 2008 at 2:13 PM, Michael Kahle <gnunix AT yahoo DOT com> wrote:
> Any help here would be wonderful.  tar will not work on my tape drive!  
> Weirdness...  Here is some background.
>
> I recently purchased a new IBM TS2900 Autoloader:
> http://www-03.ibm.com/systems/storage/tape/ts2900/index.html
>
> I have hooked up this via an Adaptec SAS 58300:
> http://www.adaptec.com/en-US/support/sas/sas/SAS-58300/
>
> After some rough patches getting the Adaptec card to even work.  I built a 
> custom kernel (2.6.27.4)
> with support for this card.  I also upgraded my backup system to lenny
> because I needed some new functionality out of initramfs to load the
> firmware for this card.
>
>> cat /proc/scsi/scsi
> Attached devices:
> Host: scsi2 Channel: 00 Id: 00 Lun: 00
>  Vendor: IBM      Model: ULT3580-HH4      Rev: 85V8
>  Type:   Sequential-Access                ANSI  SCSI revision: 03
> Host: scsi2 Channel: 00 Id: 00 Lun: 01
>  Vendor: IBM      Model: 3572-TL          Rev: 0003
>  Type:   Medium Changer                   ANSI  SCSI revision: 03
>
>> lsscsi
> [2:0:0:0]    tape    IBM      ULT3580-HH4      85V8  /dev/st0
> [2:0:0:1]    mediumx IBM      3572-TL          0003  /dev/sch0
>
> So far so good.
>
>> mtx -f /dev/sg3 status shows:
>  Storage Changer /dev/sg3:1 Drives, 9 Slots ( 0 Import/Export )
> Data Transfer Element 0:Empty
>      Storage Element 1:Full :VolumeTag=389ADOL4
>      Storage Element 2:Full :VolumeTag=385ADOL4
>      Storage Element 3:Full :VolumeTag=386ADOL4
>      Storage Element 4:Empty
>      Storage Element 5:Full :VolumeTag=387ADOL4
>      Storage Element 6:Empty
>      Storage Element 7:Full :VolumeTag=388ADOL4
>      Storage Element 8:Empty
>      Storage Element 9:Full :VolumeTag=CLNU94L1
>
> Very nice.  Let's move a tape into the drive.
>
>> mtx -f /dev/sg3 load 2
> Loading media from Storage Element 2 into drive 0...done
>
> Ok.  Now lets rewind the tape.
>
>> mt -f /dev/nst0 rewind
>
> No errors.  Good.  Do we have a tape in the drive?  Let's make sure.
>
>> mt -f /dev/nst0 status
> SCSI 2 tape drive:
> File number=0, block number=0, partition=0.
> Tape block size 0 bytes. Density code 0x46 (LTO-4).
> Soft error count since last status=0
> General status bits on (41010000):
> BOT ONLINE IM_REP_EN
>
> Looks good.  Time for a sample backup.
>
>> cd /backup/scripts
>> ls -l
> total 44
> -rwxr--r-- 1 root root  623 2006-11-14 03:14 backup2tape.sh
> -rwxr--r-- 1 root root 1862 2007-02-06 15:43 backupMichael.sh
> -rwxr-xr-x 1 root root 6763 2007-10-18 23:58 backupNetwork.sh
> -rwx------ 1 root root 3824 2008-08-26 20:36 backupNetworkTemp.sh
> -rwxr-xr-x 1 root root 1035 2008-01-01 20:03 backupVantageYE.sh
> -rwxr-xr-x 1 root root  752 2006-10-24 19:18 exclude
> lrwxrwxrwx 1 root root   15 2005-12-14 18:57 logs -> /var/log/backup
> -rwx------ 1 root root 7137 2008-10-04 19:41 newNetworkBackup.sh
> -rwxrwxrwx 1 root root 2413 2007-01-04 00:04 testBackupCapitol.sh
> -rwxr-xr-x 1 root root  874 2005-12-09 21:10 z_backupall
>> tar cvf /dev/nst0 .
> ./
> ./exclude
> ./logs
> ./z_backupall
> ./backup2tape.sh
> ./backupNetwork.sh
> tar: /dev/nst0: Cannot write: Invalid argument
> tar: Error is not recoverable: exiting now
>
> HUH?  What happened?
>
>> dmesg | tail
> st0: Sense Key : Aborted Command [current]
> st0: Add. Sense: Initiator response timeout
> st0: Can't set default compression.
>
>> tail /var/log/syslog
> Oct 31 13:01:51 backup kernel: st0: Sense Key : Aborted Command [current]
> Oct 31 13:01:51 backup kernel: st0: Add. Sense: Initiator response timeout
> Oct 31 13:01:51 backup kernel: st0: Can't set default compression.
>
> Any
> thoughts on this?  Is there some kind of SAS module I need to have
> installed?  I should be able to use this SAS device just as I use any
> other SCSI device, correct?
>

Try

dd if=/dev/sda of=/dev/nst0 bs=1M count=1000

BTW, bacula does not use tar.

John

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