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SubjectRe: SCSI deadlock
I saw the same type of problems as well with all of the current kernels,
with my AHA-2940 (also aic7xxx) until I used the 5.0.7 driver that was
floating around here. This fixed the problems with the 2940 that was
causing deadlocks while doing a find on my SCSI drives.

-Ron McCormick

PS - Take this as another shameless endorsement of this new driver.

On Fri, 20 Mar 1998, Roland Hautz wrote:

> Hi,
>
> It seems that I have still SCSI-Lockups. I can force lockups by reading
> some 50MB from by /dev/sda1. There are no messages in the logs. There is a
> message on the console, reading "(date)(hostname) kernel: (scsi0:0:0)
> Target busy)".
>
> Lockups occured with 2.1.88, 2.1.89 and 2.1.90 and, if I remember
> correctly, also with 2.0.3[23], each with SMP on a Dual Pentium. Some
> other data:
>
> --------------
> hostname:/proc/scsi # cat scsi
> Attached devices:
> Host: scsi0 Channel: 00 Id: 00 Lun: 00
> Vendor: SEAGATE Model: ST34501W Rev: 0018
> Type: Direct-Access ANSI SCSI revision: 02
> Host: scsi0 Channel: 00 Id: 05 Lun: 00
> Vendor: TEAC Model: CD-ROM CD-532S Rev: 1.0A
> Type: CD-ROM ANSI SCSI revision: 02
> Host: scsi1 Channel: 00 Id: 00 Lun: 00
> Vendor: ICP Model: Host Drive #00 Rev:
> Type: Direct-Access ANSI SCSI revision: 02
>
> hostname:/proc/scsi # cat aic7xxx/0
> Adaptec AIC7xxx driver version: 4.1/3.2
> Compile Options:
> AIC7XXX_RESET_DELAY : 15
> AIC7XXX_TAGGED_QUEUEING: Enabled
> AIC7XXX_PAGE_ENABLE : Disabled
> AIC7XXX_PROC_STATS : Disabled
>
> Adapter Configuration:
> SCSI Adapter: Adaptec AIC-7880 Ultra SCSI host adapter
> (AIC-788x chipset)
> Host Bus: Wide
> Base IO: 0xd000
> Base IO Memory: 0xe2000000
> IRQ: 10
> SCBs: Used 8, HW 16, Page 16
> Interrupts: 27688
> Serial EEPROM: True
> Extended Translation: Enabled
> SCSI Bus Reset: Enabled
> Ultra SCSI: Enabled
> Disconnect Enable Flags: 0xffff
>
> hostname:/proc/scsi # cat gdth/1
> GDT6117RP/GDT6517RP (PCI) SCSI Disk Array Controller
> Firmware Version: 2.19 Driver Version: 1.02
> ------------------
>
> With that "target busy" message, I suspect the aic-7880 module is the
> culprit.
>
> What could I check? Are there any patches I could try?
>
> On Thu, 19 Mar 1998, MOLNAR Ingo wrote:
>
> > the fixes are in 2.1.90 now. I have a quite complex SCSI setup, and i've
> > been running with the NMI watchdog that also checks for the above cli/sti
> > bug (and other spinlock bugs), and i saw no problems so far. Any SCSI
> > lockup with 2.1.90 should thus be considered a major bug, mail me and i
> > get it fixed ASAP.
>
>
> --
> Dipl.-Phys. Roland Hautz Evolution Systems GmbH
> Network Administration Mobil-Oil-Str. 42
> mailto:rh@evosys.net http://www.esib.net/ D-84539 Ampfing
> Tel.:(49)(8636)9830-32 Fax: (49)(8636)9830-99
>
>
>
> -
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>


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