No subject

[Christoph Müller]

Hi everybody,

I've got a problem with my Adaptec 2940 AU that I've been trying to fix since
about a year now. It's been the same with Linux-Versions 2.0.30 - 2.0.35, different
disks, two controllers (of the same kind), new cables and about any adapter setting
that is possible (with or without reconnection, synchronous mode, reduced speed 
etc.))
Currently I'm using a Quantum Fireball 3210 S disk and Linux 2.0.35.
At times when the disk is heavily used, I get a queue full message which leeds to 
a reset of the scsi-bus.
If this happens during backup to a tape (HP SCSI DAT Streamer) it leeds to a system
crash or sometimes just to errors which are detected when verifying the tape.
The strange thing is, that any change of settings does not seem to have any effect.
Using an old AHA 1502 controller everything works fine (but slower).
Any help would be greatly appriciated.

Christoph Mueller
mueller-dlg at t-online.de

system messages before crash listed below

Oct 24 00:04:27 linux kernel: (scsi0:0:4:0) Queue full received; queue depth 32, active 8
Oct 24 01:14:11 linux kernel: Unable to handle kernel NULL pointer dereference at virtual address c0000022
Oct 24 01:14:11 linux kernel: current->tss.cr3 = 03bab000, Xr3 = 03bab000
Oct 24 01:14:11 linux kernel: *pde = 00102067
Oct 24 01:14:11 linux kernel: *pte = 00000000
Oct 24 01:14:11 linux kernel: Oops: 0000
Oct 24 01:14:11 linux kernel: CPU:    0
Oct 24 01:14:11 linux kernel: EIP:    0010:[lookup+157/272]
Oct 24 01:14:11 linux kernel: EFLAGS: 00010206
Oct 24 01:14:11 linux kernel: eax: 0009ed58   ebx: 00a64f00   ecx: 00a64f00   edx: 030ef005
Oct 24 01:14:11 linux kernel: esi: 00fcef74   edi: 00fcef74   ebp: 00000002   esp: 00fcef40
Oct 24 01:14:11 linux kernel: ds: 0018   es: 0018   fs: 002b   gs: 002b   ss: 0018


To Unsubscribe: send mail to majordomo at FreeBSD.org
with "unsubscribe freebsd-aic7xxx" in the body of the message