I had an older box which I was using as the site backup machine. A
friend gave me a HP DAT72 drive and I got it up and working on the
Fedora 11 OS. I did backups and tested everything. The tape drive was
accessed as /dev/st4. This box ran Samba and users copied their files to
the this machine. I did backups using:
tar cvf /dev/st4 /home/<user> /home/<user>
Then I decided to upgrade. I swapped out the motherboard and got a 64
bit cpu and upgraded the OS (complete new install). I now have Fedora 15
running on the box.
The tape drive has been visible as /dev/st4 occasionally. And when it is
I have used it to make a small backup and test the restore. But the
/dev/st4 is not always visible and the file /dev/st4 usually disappears
upon reboot. I don't know what I did to make it appear (if anything).
It almost looks like the device changed from /dev/st4 to /dev/st0. Is
that possible?
Some more info:
#ls /dev/st*
/dev/st0 /dev/st0a /dev/st0l /dev/st0m /dev/stderr /dev/stdin
/dev/stdout
#lsscsi
[0:0:0:0] cd/dvd PIONEER DVD-RW DVR-106D 1.08 /dev/sr0
[2:0:0:0] disk ATA WDC WD2500JS-60M 10.0 /dev/sda
[2:0:1:0] disk ATA ST2000DL003-9VT1 CC32 /dev/sdb
[3:0:0:0] disk ATA ST2000DL003-9VT1 CC32 /dev/sdc
[3:0:1:0] disk ATA ST2000DL003-9VT1 CC32 /dev/sdd
[4:0:4:0] tape HP C7438A V312 /dev/st0
# dmesg |grep tape
[ 25.211496] st 4:0:4:0: Attached scsi tape st0
#cat /proc/scsi/scsi
Attached devices:
Host: scsi0 Channel: 00 Id: 00 Lun: 00
Vendor: PIONEER Model: DVD-RW DVR-106D Rev: 1.08
Type: CD-ROM ANSI SCSI revision: 05
Host: scsi2 Channel: 00 Id: 00 Lun: 00
Vendor: ATA Model: WDC WD2500JS-60M Rev: 10.0
Type: Direct-Access ANSI SCSI revision: 05
Host: scsi2 Channel: 00 Id: 01 Lun: 00
Vendor: ATA Model: ST2000DL003-9VT1 Rev: CC32
Type: Direct-Access ANSI SCSI revision: 05
Host: scsi3 Channel: 00 Id: 00 Lun: 00
Vendor: ATA Model: ST2000DL003-9VT1 Rev: CC32
Type: Direct-Access ANSI SCSI revision: 05
Host: scsi3 Channel: 00 Id: 01 Lun: 00
Vendor: ATA Model: ST2000DL003-9VT1 Rev: CC32
Type: Direct-Access ANSI SCSI revision: 05
Host: scsi4 Channel: 00 Id: 04 Lun: 00
Vendor: HP Model: C7438A Rev: V312
Type: Sequential-Access ANSI SCSI revision: 03
#tar cvf /dev/st4 /root
tar: /dev/st4: Cannot open: No such device or address
tar: Error is not recoverable: exiting now
#tar cvf /dev/st0 /root
<does nothing - just times out after a few minutes with the following
message>
tar: /dev/st0: Cannot open: Input/output error
tar: Error is not recoverable: exiting now
#./rescan-scsi-bus.sh
Host adapter 4 (aic7xxx) found.
./rescan-scsi-bus.sh: line 31: [: too many arguments
Host adapter * (device_info) found.
Scanning hosts 4 * channels 0 for
SCSI target IDs 0 1 2 3 4 5 6 7 , LUNs 0
Scanning for device 4 0 4 0 ...
OLD: Host: scsi4 Channel: 00 Id: 04 Lun: 00
Vendor: HP Model: C7438A Rev: V312
Type: Sequential-Access ANSI SCSI revision: 03
0 new device(s) found. d.txt 0 7 0 ...
0 device(s) removed.
#MAKEDEV /dev/st4
# ls /dev/st*
/dev/st0 /dev/st0l /dev/st4 /dev/st4l /dev/stderr /dev/stdout
/dev/st0a /dev/st0m /dev/st4a /dev/st4m /dev/stdin
#tar cvf /dev/st4 /root
tar: /dev/st4: Cannot open: No such device or address
tar: Error is not recoverable: exiting now
# mt -f /dev/st4 status
/dev/st4: No such device or address
#tar cvf /dev/st0 /root
tar: /dev/st0: Cannot open: Input/output error
tar: Error is not recoverable: exiting now
# 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 (10000):
IM_REP_EN
#<Reboot>
ls /dev/st*
/dev/st0 /dev/st0a /dev/st0l /dev/st0m /dev/stderr /dev/stdin
/dev/stdout
Does anybody have a clue? Is there some command that I am missing? What
can I do? Thanks for any help!
Bill
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