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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:<br>
<tt>tar cvf /dev/st4 /home/<user> /home/<user></tt><br>
<br>
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. <br>
<br>
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).<br>
<br>
It almost looks like the device changed from /dev/st4 to /dev/st0.
Is that possible? <br>
<br>
Some more info:<br>
<tt>#ls /dev/st*<br>
/dev/st0 /dev/st0a /dev/st0l /dev/st0m /dev/stderr
/dev/stdin /dev/stdout<br>
#lsscsi<br>
[0:0:0:0] cd/dvd PIONEER DVD-RW DVR-106D 1.08 /dev/sr0 <br>
[2:0:0:0] disk ATA WDC WD2500JS-60M 10.0 /dev/sda <br>
[2:0:1:0] disk ATA ST2000DL003-9VT1 CC32 /dev/sdb <br>
[3:0:0:0] disk ATA ST2000DL003-9VT1 CC32 /dev/sdc <br>
[3:0:1:0] disk ATA ST2000DL003-9VT1 CC32 /dev/sdd <br>
[4:0:4:0] tape HP C7438A V312 /dev/st0 <br>
# dmesg |grep tape<br>
[ 25.211496] st 4:0:4:0: Attached scsi tape st0<br>
#cat /proc/scsi/scsi<br>
Attached devices:<br>
Host: scsi0 Channel: 00 Id: 00 Lun: 00<br>
Vendor: PIONEER Model: DVD-RW DVR-106D Rev: 1.08<br>
Type: CD-ROM ANSI SCSI revision: 05<br>
Host: scsi2 Channel: 00 Id: 00 Lun: 00<br>
Vendor: ATA Model: WDC WD2500JS-60M Rev: 10.0<br>
Type: Direct-Access ANSI SCSI revision: 05<br>
Host: scsi2 Channel: 00 Id: 01 Lun: 00<br>
Vendor: ATA Model: ST2000DL003-9VT1 Rev: CC32<br>
Type: Direct-Access ANSI SCSI revision: 05<br>
Host: scsi3 Channel: 00 Id: 00 Lun: 00<br>
Vendor: ATA Model: ST2000DL003-9VT1 Rev: CC32<br>
Type: Direct-Access ANSI SCSI revision: 05<br>
Host: scsi3 Channel: 00 Id: 01 Lun: 00<br>
Vendor: ATA Model: ST2000DL003-9VT1 Rev: CC32<br>
Type: Direct-Access ANSI SCSI revision: 05<br>
Host: scsi4 Channel: 00 Id: 04 Lun: 00<br>
Vendor: HP Model: C7438A Rev: V312<br>
Type: Sequential-Access ANSI SCSI revision: 03<br>
#tar cvf /dev/st4 /root<br>
tar: /dev/st4: Cannot open: No such device or address<br>
tar: Error is not recoverable: exiting now<br>
#tar cvf /dev/st0 /root</tt><big><br>
<does nothing - just times out after a few minutes with
the following message></big><tt><br>
tar: /dev/st0: Cannot open: Input/output error<br>
tar: Error is not recoverable: exiting now<br>
#./rescan-scsi-bus.sh <br>
Host adapter 4 (aic7xxx) found.<br>
./rescan-scsi-bus.sh: line 31: [: too many arguments<br>
Host adapter * (device_info) found.<br>
Scanning hosts 4 * channels 0 for <br>
SCSI target IDs 0 1 2 3 4 5 6 7 , LUNs 0<br>
Scanning for device 4 0 4 0 ...<br>
OLD: Host: scsi4 Channel: 00 Id: 04 Lun: 00<br>
Vendor: HP Model: C7438A Rev: V312<br>
Type: Sequential-Access ANSI SCSI
revision: 03<br>
0 new device(s) found. d.txt 0 7 0 ...<br>
0 device(s) removed. <br>
#MAKEDEV /dev/st4<br>
# ls /dev/st*<br>
/dev/st0 /dev/st0l /dev/st4 /dev/st4l /dev/stderr
/dev/stdout<br>
/dev/st0a /dev/st0m /dev/st4a /dev/st4m /dev/stdin<br>
#tar cvf /dev/st4 /root<br>
tar: /dev/st4: Cannot open: No such device or address<br>
tar: Error is not recoverable: exiting now<br>
# mt -f /dev/st4 status<br>
/dev/st4: No such device or address<br>
#tar cvf /dev/st0 /root<br>
tar: /dev/st0: Cannot open: Input/output error<br>
tar: Error is not recoverable: exiting now<br>
# mt -f /dev/st0 status<br>
SCSI 2 tape drive:<br>
File number=-1, block number=-1, partition=0.<br>
Tape block size 0 bytes. Density code 0x0 (default).<br>
Soft error count since last status=0<br>
General status bits on (10000):<br>
IM_REP_EN<br>
#<Reboot><br>
ls /dev/st*<br>
/dev/st0 /dev/st0a /dev/st0l /dev/st0m /dev/stderr
/dev/stdin /dev/stdout<br>
<br>
</tt> <br>
Does anybody have a clue? Is there some command that I am missing?
What can I do? Thanks for any help!<br>
Bill<br>
<br>
<br>
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