I rebooted and determined the DLT drive is on the 2nd controller on the R= AID perc 3/di card it is the only item on the 2nd controller and it is on= scsi id 6. The problem was that the active terminator had been pressed on (at the fa= ctory) and had fallen off actually the terminator was permanently attache= d but it had become disconnected. So I replaced the scsi cable and them = the dd command worked great. = Thanks goes out to all the people who read the post and provided some gre= at insight. = Jim > = > From: "der.hans" > Date: 2003/08/02 Sat PM 03:19:56 EDT > To: plug-discuss@lists.plug.phoenix.az.us > Subject: Re: Re: DLT and Debian > = > Am 01. Aug, 2003 schw=E4tzte elemint@cox.net so: > = > > I tried the dd command although I got a error message: "/dev/st0': In= put/output error" > > > > dd if=3D/dev/zero of=3D/dev/st0 count=3D1 bs=3D32768 > > 1+0 records in > > 1+0 records out > > dd: closing output file `/dev/st0': Input/output error > = > Does status show the tape as readonly? > = > The previous status you posted didn't. > = > What kernel are you using? ( uname -a ) > = > > Is it possibly because the scsi id of the tape appears to be the same= as > > the scsi card. Although there are multiple scsi cards on the machine = so > = > How does the ID of the tape drive appear to be the same as the ID of th= e > card? If it was you wouldn't be able to see the drive :). > = > In /proc/scsi there are subdirectories for each of the controllers. The= > filenames in the controller subdirectories are numbers reflecting which= SCSI > controller it is. > = > > I am not sure if the tape drive is on the same card that has scsi id = 6; > > although it appears to be. > > > > > = > Do you only have one SCSI controller on the box? > = > The tape drive should generally not be on the same controller as the ha= rd > drives you're backing up. > = > > Attached devices: > > Host: scsi3 Channel: 00 Id: 06 Lun: 00 > > Vendor: DELL Model: 1x6 U2W SCSI BP Rev: 5.35 > > Type: Processor ANSI SCSI revision: 02 > > Host: scsi3 Channel: 01 Id: 06 Lun: 00 > > Vendor: QUANTUM Model: DLT7000 Rev: 2561 > > Type: Sequential-Access ANSI SCSI revision: 02 > = > scsi3 means it's the 4th SCSI controller. Not sure where the first thre= e > are. Maybe it's due to loading the driver, unloading the drive, loading= the > driver, unloading the driver, etc. Channel 01 means the controller has > multiple SCSI chips in it and you're on the second chip. The SCSI ID fo= r the > tape drive is 6. The controller is normally ID 7. LUN is important if y= ou > have multiple devices that all share one SCSI ID. > = > grep "Target IDs" /proc/scsi/*/3 > = > That will show you which SCSI IDs are in use on that controller and sho= w you > which ID the controller is using. > = > grep "Target IDs" /proc/scsi/*/? > = > That'll get ID info for all of your SCSI controllers. > = > > Host: scsi3 Channel: 02 Id: 00 Lun: 00 > > Vendor: MegaRAID Model: LD0 RAID5 34556R Rev: 1.01 > > Type: Direct-Access ANSI SCSI revision: 02 > = > Your RAID device is on a different SCSI chip on the same controller as = the > tape drive. I'm not sure if that's an issue. They should have their own= > bandwidth. As long as the controller can handle both chips getting maxe= d out > you should be fine. I haven't done any testing with this type of scener= io, > so I'm not certain. Controller docs might let you know. > = > ciao, > = > der.hans > -- = > # https://www.LuftHans.com/ http://www.AZOTO.org/ > # The Internet is the front line of the battle > # to protect our freedom. -- Nathaniel Borenstein > = > = > = > --------------------------------------------------- > PLUG-discuss mailing list - PLUG-discuss@lists.plug.phoenix.az.us > To subscribe, unsubscribe, or to change you mail settings: > http://lists.PLUG.phoenix.az.us/mailman/listinfo/plug-discuss > =