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Description of problem:
The Red Hat 2.4.20-13.7smp kernel update for Red Hat Linux 7.2 includes an
updated cciss driver (HP CISS Driver (v 2.4.42)) which renders the AIT-1 tape
unit unusable.  The tape unit cannot be managed via mt commands, nor can dump
read/write data.  Any attempt to access the tape unit produces the following
output to the console:
---
st0: Error on write filemark.
st0: Error 10000 (sugg. bt 0x0, driver bt 0x0, host bt 0x1).
st0: Error with sense data: Info fld=0x1, Current st09:00: sense key Unit Attention
---

Rebooting into the previous kernel version of 2.4.18-27.7.x with cciss driver
version 2.4.30 corrects this issue.

This particular problem is seen on three different servers (all Compaq DL380s)
and all the media has been independently verified.

Version-Release number of selected component (if applicable):
kernel-smp-2.4.20-13.7

How reproducible:
Always

Steps to Reproduce:
1.Using Red Hat Linux 7.2 with kernel 2.4.20-13.7smp on a Compaq DL380 G3 with
an AIT-1 tape unit, issue "mt -f /dev/nst0 status"
2.
3.
    

Actual Results:  Received: "/dev/nst0: Input/output error"

Expected Results:  mt should have reported the tape status, something similar to:
SCSI 2 tape drive:
File number=0, block number=0, partition=0.
Tape block size 0 bytes. Density code 0x30 (AIT-1 or MLR3).
Soft error count since last status=0
General status bits on (41010000):
 BOT ONLINE IM_REP_EN


Additional info:

Compaq/HP's latest version of the cciss driver is 2.4.44 and was
released on 4/23/2003, however, this has not been tested with a 2.4.20 kernel.