Hi!
I would like to report about my successes and remaining problems
with Onstream Di30 tape drives. If anyone knows how to solve the
problems I have incurred, let me know (please mail directly, I am not
subscribing to this list).
My configuration:
* Asus CUV4X-D mainboard with 2 PentiumIII Coppermine, 866MHz
* Internal Onstream Di30 as master on second IDE (/dev/hdc)
* Kernel 2.4.9
Initial issues:
* The 2.4.4-SMP-4GB kernel shipped with SuSE 7.2 did NOT support the
Di30 reliably. mt -f /dev/ht0 status wouldn't work. The kernel
upgrade helped.
Successes:
* It looks I can now create tar archives at least in rewinding mode
(i.e. on /dev/ht0), and can restore that archive (I have tried only
one per tape yet). I backed up ca 13GB uncompressed using tar,
restored some 5% of the files, randomly chosen, and ran diff on the
result: no errors found!
* The --verify switch for tar does not work.
* I can write to tape in non-rewind mode (/dev/nht0), but I have only
been able to restore the first archive stored.
Remaining issues:
* Inserting a new tape and doing
mt -f /dev/nht0 rewind
mt -f /dev/nht0 eod (or eom)
mt -f /dev/nht0 status
makes status take a very long time, and in the end I get a status
report like (note block number -1)
drive type = Generic SCSI-2 tape
drive status = 32768
sense key error = 0
residue count = 0
file number = 0
block number = -1
Tape block size 32768 bytes. Density code 0x0 (default).
Soft error count since last status=0
General status bits on (1000000):
and there are lots of error messages in /var/log/messages, like
kernel: ide-tape: ht0: skipping frame 31, incorrect application signature
kernel: ide-tape: ht0: skipping frame 31, incorrect application signature
kernel: ide-tape: ht0: skipping frame 32, incorrect application signature
kernel: ide-tape: ht0: skipping frame 32, incorrect application signature
:
:
kernel: ide-tape: ht0: skipping frame 1031, incorrect application signature
kernel: ide-tape: ht0: skipping frame 1031, incorrect application signature
kernel: ide-tape: ht0: couldn't find logical block -1, aborting
* Trying to navigate around on a tape with several archives using
status, fsf or fsr commands with mt -f /dev/nht0, I got errors like
kernel: ide-tape: ht0: skipping frame 914, wrt_pass_cntr 1 (expected 2)(logical_blk_num 893)
kernel: ide-tape: ht0: skipping frame 914, wrt_pass_cntr 1 (expected 2)(logical_blk_num 893)
kernel: ide-tape: ht0: skipping frame 915, wrt_pass_cntr 1 (expected 2)(logical_blk_num 894)
* I sometimes get error messages like
kernel: ide-tape: ht0: I/O error, pc = 2b, key = 2, asc = 4, ascq = 1
I hope this info is helpful for further development. If you want more
information, please let me know, although I might take a few days to
get back to you.
Best regards,
Hans
---------------------------------------------------------------------
Dr. Hans Ekkehard Plesser Tel. : +47 6494 8832
Physics Section / ITF Fax : +47 6494 8810
Agricultural University of Norway e-mail: hans.plesser@itf.nlh.no
N-1432 Ås, Norway WWW : arken.nlh.no/~itfhep
---------------------------------------------------------------------
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Fri Sep 07 2001 - 21:00:40 EST