[nflug] mt

David J. Andruczyk djandruczyk at yahoo.com
Tue Jul 25 21:53:00 EDT 2006


Is the device properly terminated? with the proper cable for the scsi
bus speed/type used? i.e. you can't use a regular ultrawide cable when
running LVD, U80, U160 or U320 as those require the twist style (think
lots of twisted pairs in one big honkin cable) cables.  same with
terminators.  a SE terminator causes issues on an LVD bus and vs.
versus.


--- eric <eric at bootz.us> wrote:

> Looks good right?
> 
> >cat /proc/scsi/scsi
> Attached devices:
> Host: scsi1 Channel: 00 Id: 00 Lun: 00
>   Vendor: MegaRAID Model: LD 0 RAID5  173G Rev: 198U
>   Type:   Direct-Access                    ANSI SCSI revision: 02
> Host: scsi1 Channel: 04 Id: 06 Lun: 00
>   Vendor: HP       Model: Ultrium 1-SCSI   Rev: E21V
>   Type:   Sequential-Access                ANSI SCSI revision: 03
> 
> 
> >dmesg | grep scsi
> Attached scsi tape st0 at scsi1, channel 4, id 6, lun 0
> 
> 
> 
> eric wrote:
> 
> >here is more of the fun:
> >
>
>--------------------------------------------------------------------------------------------------------------
> >st0: Error 400f3(sugg. bt 0x0, driver bt 0x0, host bt 0x4)
> >st0: Error with Sense Data: Current st0: Sense Key Unit Attention
> >Additional sense: Power on, reset, or bus device reset occurred
>
>--------------------------------------------------------------------------------------------------------------
> >
> >Maybe I have scsi plugged in wrong? lost...
> >
> >eric wrote:
> >
> >  
> >
>
>>http://lists.us.dell.com/pipermail/linux-poweredge/2003-December/011678.html
> >>this is all I could google and no threads to his question ever came
> about.
> >>
> >>The tape drive I have is a Dell PowerVault 110t -LTO
> >>dang!
> >>
> >>
> >>Cyber Source wrote:
> >>
> >> 
> >>
> >>    
> >>
> >>>eric wrote:
> >>>
> >>>   
> >>>
> >>>      
> >>>
> >>>>Funny thing, I can rewind my tape(mt -f /dev/st0 status), but
> when I try
> >>>>to erase I get this error
> >>>>
> >>>>
> >>>>The Command->      mt -f /dev/st0 erase
> >>>>The Error->              mt: /dev/st0: Input/output error
> >>>>
> >>>>any clues?
> >>>>thanks,
> >>>>eric
> >>>>
> >>>>Cyber Source wrote:
> >>>>
> >>>>
> >>>>
> >>>>     
> >>>>
> >>>>        
> >>>>
> >>>>>eric wrote:
> >>>>>
> >>>>>  
> >>>>>
> >>>>>       
> >>>>>
> >>>>>          
> >>>>>
> >>>>>>I was wondering, does this status look good, the zeros mean
> success
> >>>>>>right? But should I be worried about Density code(unknown)? 
> This
> >>>>>>is my
> >>>>>>first attempt to use linux to back up on a magnetic drive I
> used
> >>>>>>ntbackup before, so I kinda need some help.  Should I be using
> >>>>>>/dev/st0
> >>>>>>instead? Thanx, eric.
> >>>>>>
> >>>>>>
> >>>>>>MYHOSTNAME:/# mt -f /dev/nst0 status
> >>>>>>drive type = Generic SCSI-2 tape
> >>>>>>drive status = 1073741824
> >>>>>>sense key error = 0
> >>>>>>residue count = 0
> >>>>>>file number = 0
> >>>>>>block number = 0
> >>>>>>Tape block size 0 bytes. Density code 0x40 (unknown).
> >>>>>>Soft error count since last status=0
> >>>>>>General status bits on (41010000):
> >>>>>>BOT ONLINE IM_REP_EN
> >>>>>>
> >>>>>>_______________________________________________
> >>>>>>nflug mailing list
> >>>>>>nflug at nflug.org
> >>>>>>http://www.nflug.org/mailman/listinfo/nflug
> >>>>>>
> >>>>>>       
> >>>>>>         
> >>>>>>
> >>>>>>            
> >>>>>>
> >>>>>From the st man page...
> >>>>        
> >>>>
> >>>>>/dev/st*  : the auto-rewind SCSI tape devices
> >>>>>/dev/nst* : the non-rewind SCSI tape devices
> >>>>>
> >>>>>_______________________________________________
> >>>>>nflug mailing list
> >>>>>nflug at nflug.org
> >>>>>http://www.nflug.org/mailman/listinfo/nflug
> >>>>>   
> >>>>>       
> >>>>>
> >>>>>          
> >>>>>
> >>>>_______________________________________________
> >>>>nflug mailing list
> >>>>nflug at nflug.org
> >>>>http://www.nflug.org/mailman/listinfo/nflug
> >>>>
> >>>> 
> >>>>     
> >>>>
> >>>>        
> >>>>
> >>>I have one scsi tape drive that works well (FINALLY) and one that
> >>>still isnt working. The one that is, is a dds4 and the one that
> isnt
> >>>is a dds2 (tapes that is). Reading the man pages on mt and st are
> >>>enough to get the WTF??!! response out of me. Cleaning the drive
> is
> >>>very important, make sure you have a cleaning tape and run it. It
> may
> >>>be incompatible media, etc.. Make sure you have the right media
> and
> >>>the bs is set right. And when/if you find some clues to it, clue
> me in
> >>>will ya? lol Thanks. If I manage to get to the one that isnt
> working
> >>>(when the guy pays me, I might look into it further) and I figure
> it
> >>>out, I will let you know.
> >>>_______________________________________________
> >>>nflug mailing list
> >>>nflug at nflug.org
> >>>http://www.nflug.org/mailman/listinfo/nflug
> >>>   
> >>>
> >>>      
> >>>
> >>_______________________________________________
> >>nflug mailing list
> >>nflug at nflug.org
> >>http://www.nflug.org/mailman/listinfo/nflug
> >> 
> >>
> >>    
> >>
> >
> >_______________________________________________
> >nflug mailing list
> >nflug at nflug.org
> >http://www.nflug.org/mailman/listinfo/nflug
> >  
> >
> 
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> 


Dave J. Andruczyk

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