We recently purchased a Seagate AIT Sidewinder drive and are having some
problems with it.
We first tried it on a machine with a BusLogic BT-950 PCI Wide Ultra
SCSI card. The tape drive would work infrequently. Sometimes the drive
would work without errors, other times it would work, but I would get
kernel messages that device 0 on the SCSI chain was resetting (device 0
is my boot drive, the tape drive is on SCSI ID 4). Other times, I would
get messages that the SCSI command failed, the kernel would try to reset
the drive, but get caught in a loop and lock out all SCSI devices. In
the latter case, only a cold reboot would get me back into the machine.
The error messages usually look something like
Aborting CCB #3256134 to Target 0
CCB #3256134 to Target 0 Aborted
aborting command due to timeout : pid 3256113, scsi0, channel 0, id 0,
lun 0 0x28 00 00 38 94 d5 00 00 08 00
My fist suspicioun was that the chain wasn't properly terminated. I
double checked the chain, and everything was terminated fine. Also,
removing the tape drive eliminates the problem entirely (I have other
external devices and they continue to work fine as long as the tape
drive is not attached or is attached but never used).
I tried the AIT drive on another machine with a different SCSI
controller (an Adaptec 7890). On that machine, the tape drive doesn't
work at all. It doesn't lock up the SCSI chain (like it does on the
BusLogic card), but any command sent to the tape drive simply never
returns ('mt status', for example just hangs).
IS the AIT Sidewinder simply not supported under Linux, or does this
sound like a broken tape drive?
thornton
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