On Thu, 2004-03-25 at 22:12, Mayur Patel wrote: > HI... > > This is my first posting so not sure if posting in correct place or not. Please advise if not. > > I want to use HP DAT 24X6 SCSI tape drive with Linux 8.0. I've attached the tape drive with linux but getting following error. > > can someone please educate how the scsi tape drive installation works in linux ? > > can someone please classified below output with his/her suggestion/comments ? > > Thanks in advance for your help. I'd follow up if i need to provide any more information. > > thanks again. please help. > > > [BDC root]# mt -f /dev/st0 status > SCSI 2 tape drive: > File number=-1, block number=-1, partition=0. > Tape block size 0 bytes. Density code 0x0 (default). > Soft error count since last status=0 > General status bits on (50000): > DR_OPEN IM_REP_EN > > [BDC root]# more /proc/scsi/scsi > Attached devices: > Host: scsi0 Channel: 00 Id: 03 Lun: 00 > Vendor: HP Model: C1557A Rev: U812 > Type: Sequential-Access ANSI SCSI > revision: 02 > Host: scsi0 Channel: 00 Id: 03 Lun: 01 > Vendor: HP Model: C1557A Rev: U812 > Type: Medium Changer ANSI SCSI > revision: 02 > [BDC root]# uname -r > 2.4.18-14 > [BDC root]# tar cvf /dev/st0 /etc > tar: Removing leading `/' from member names > etc/ > etc/sysconfig/ > etc/sysconfig/network-scripts/ > etc/sysconfig/network-scripts/ifup-aliases > tar: /dev/st0: Wrote only 0 of 10240 bytes > tar: Error is not recoverable: exiting now > > [BDC root]# mt -f /dev/nst0 status > SCSI 2 tape drive: > File number=-1, block number=-1, partition=0. > Tape block size 0 bytes. Density code 0x0 (default). > Soft error count since last status=0 > General status bits on (50000): > DR_OPEN IM_REP_EN > > [BDC root]# mt -f /dev/nst1 status > /dev/nst1: No such device or address > > [BDC root]# mt -f /dev/nst0 status > SCSI 2 tape drive: > File number=-1, block number=-1, partition=0. > Tape block size 0 bytes. Density code 0x0 (default). > Soft error count since last status=0 > General status bits on (50000): > DR_OPEN IM_REP_EN > **** > File number=-1, block number=-1 <<<<<<< those are negative -1 > Do you Yahoo!? > http://taxes.yahoo.com/filing.html > Yahoo! Finance Tax Center > - File online. File on time. Well, looks to me like either you don't have a tape in the drive or it doesn't know there's a tape there. Did you actually 'load' a tape? I don't mean put tapes in the cart. and load the cart. into the changer, I mean cause the changer to load a tape in the actual tape drive. If there is a tape in the drive (as opposed to the changer) you should get this: gandolf:/# mt -f /dev/nst0 status SCSI 2 tape drive: File number=-1, block number=-1, partition=0. Tape block size 0 bytes. Density code 0x25 (DDS-3). <<< notice this Soft error count since last status=0 General status bits on (1010000): ONLINE IM_REP_EN <<< notice this In order to 'load' a tape from the changer cart. you need to use the mtx command (mtx-1.2.16-2 for 7.3) and in order to use it, you need to know the sg# for the drive & changer. I use 'sgcheck' (scsi-1.7.... ) which will give you something like this: gandolf:/# sgcheck Assignment of generic SCSI devices, device host/channel/ID/LUN type(numeric type) vendor model: /dev/sg0 0/0/0/0 Direct-Access SEAGATE ST34501W /dev/sg1 1/0/4/0 Sequential-Access HP C1557A /dev/sg2 1/0/4/1 Medium Changer HP C1557A /dev/sg3 1/0/5/0 CD-ROM YAMAHA CRW8824S /dev/sg4 1/0/6/0 CD-ROM TOSHIBA DVD-ROM SD-M1401 /dev/sg5 2/0/1/0 Processor HP C2520A Note that the drive and the changer have the same scsi id, but different luns. The changer is usually 1 while the drive is 0. The syntax to load a tape with mtx is (for my situation): mtx -f /dev/sg2 load 1 0; this loads the first tape from the changer into the drive mtx -f /dev/sg2 status ; gives a status, this: gandolf:/# mtx -f /dev/sg2 status Storage Changer /dev/sg2:1 Drives, 6 Slots ( 0 Import/Export ) Data Transfer Element 0:Full (Storage Element 1 Loaded) Storage Element 1:Empty Storage Element 2:Full Storage Element 3:Full Storage Element 4:Full Storage Element 5:Full Storage Element 6:Full Now that there's a tape in the actual drive, you cat tar to it in the normal way. mtx -f /dev/sg2 unload ; put the tape back Best Cokey -- ------------------------------------------------------------------ F. 'Cokey' de Percin, DBA Email: CSC Work - cdeperci@xxxxxxx Columbia, South Carolina Home - fdepercin@xxxxxxxxx -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. Mailscanner thanks transtec Computers for their support. -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
