>What does `mt -f /dev/nst0 datcompression` say?
>mt -f /dev/nst0 datcompression
mt: unknown command "datcompression"
usage: mt [-v] [--version] [-h] [ -f device ] command [ count ]
commands: weof, wset, eof, fsf, fsfm, bsf, bsfm, fsr, bsr, fss, bss, rewind,
offline, rewoffl, eject, retension, eod, seod, seek, tell, status,
erase, setblk, lock, unlock, load, compression, setdensity,
drvbuffer, stwrthreshold, stoptions, stsetoptions, stclearoptions,
defblksize, defdensity, defdrvbuffer, defcompression, stsetcln,
sttimeout, stlongtimeout, densities, setpartition, mkpartition,
partseek, asf, stshowopt.
So I tried:
>mt -f /dev/nst0 compression
/dev/nst0: Input/output error
And tried:
>mt -f /dev/nst0 defcompression
No output there. Here are the messages after I ran those two commands:
>dmesg | tail
st0: Sense Key : Aborted Command [current]
st0: Add. Sense: Initiator response timeout
st0: Sense Key : Aborted Command [current]
st0: Add. Sense: Initiator response timeout
>tail /var/log/syslog
Oct 31 14:10:03 backup kernel: st0: Sense Key : Aborted Command [current]
Oct 31 14:10:03 backup kernel: st0: Add. Sense: Initiator response timeout
Oct 31 14:10:52 backup kernel: st0: Sense Key : Aborted Command [current]
Oct 31 14:10:52 backup kernel: st0: Add. Sense: Initiator response timeout
>Have you tried dump?
Yes. This was also suggested by another person, see below:
<quote from my bacula-users post>
>>Try
>>
>>dd if=/dev/sda of=/dev/nst0 bs=1M count=1000
Tried it.
>d if=/dev/sda of=/dev/nst0 bs=1M count=1000
dd: writing `/dev/nst0': Invalid argument
1+0 records in
0+0 records out
0 bytes (0 B) copied, 10.048 s, 0.0 kB/s
Not sure why /dev/nst0 was invalid. After I ran this I checked out dmesg and
syslog:
>tail /var/log/syslog
Oct 31 13:58:31 backup kernel: st0: Sense Key : Aborted Command [current]
Oct 31 13:58:31 backup kernel: st0: Add. Sense: Initiator response timeout
Oct 31 13:58:31 backup kernel: st0: Can't set default compression.
>dmesg | tail
st0: Sense Key : Aborted Command [current]
st0: Add. Sense: Initiator response timeout
st0: Can't set default compression.
</end quote>
>What happens if you use /dev/st0 instead of /dev/nst0?
>tar cvf /dev/st0 .
./
./exclude
./logs
./z_backupall
./backup2tape.sh
./backupNetwork.sh
tar: /dev/st0: Cannot write: Invalid argument
tar: Error is not recoverable: exiting now
Syslog and dmesg after running this:
> tail /var/log/syslog
Oct 31 14:17:44 backup kernel: st0: Sense Key : Aborted Command [current]
Oct 31 14:17:44 backup kernel: st0: Add. Sense: Initiator response timeout
Oct 31 14:17:44 backup kernel: st0: Can't set default compression.
>dmesg | tail
st0: Add. Sense: Initiator response timeout
st0: Can't set default compression.
^^^^ No dates in dmesg... so not sure if that was from the original "mt -f
/dev/nst0 defcompression" that I tried.
Thanks for looking! :)
Michael
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