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From: "Bret Ford" <bford@uop.cs.uop.edu>
To: <freebsd-current@FreeBSD.ORG>
Subject: Seagate drive lockup
Date: Thu, 8 Oct 1998 08:22:03 -0700
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Greetings,

I'm using a recent (around Sep 29) -current world with a kernel
compiled fresh today.  I'm having some "lock-up" problems with
my Seagate 9gb drive.  This occurs whenever the disk gets used with
some intensity (eg. rm -fr obj or most 'cvsup's). I will get a couple
iterations of kernel messages like these:

Oct  8 07:51:31 plover /kernel.test: (da1:ahc0:0:3:0): SCB 0xc - timed out
in dataout phase, SCSISIGI == 0x4
Oct  8 07:51:31 plover /kernel.test: SEQADDR == 0x10d
Oct  8 07:51:31 plover /kernel.test: SSTAT1 == 0x2
Oct  8 07:51:31 plover /kernel.test: (da1:ahc0:0:3:0): BDR message in
message buffer
Oct  8 07:51:33 plover /kernel.test: (da1:ahc0:0:3:0): SCB 0x9 - timed out
in dataout phase, SCSISIGI == 0x14
Oct  8 07:51:33 plover /kernel.test: SEQADDR == 0x10e
Oct  8 07:51:33 plover /kernel.test: SSTAT1 == 0x2
Oct  8 07:51:33 plover /kernel.test: (da1:ahc0:0:3:0): no longer in timeout,
status = 34b
Oct  8 07:51:33 plover /kernel.test: ahc0: Issued Channel A Bus Reset. 47
SCBs aborted

...and then my ^C or ^Z command will finally take.  It usually takes
a minute or more to get out of this lock-up condition.

Below is a dmesg description of my SCSI hardware.  Hope this is helpful.

Bret Ford

ahc0: <Adaptec 274X SCSI host adapter> at 0x4c00-0x4cff irq 15 on eisa0 slot
4
ahc0: aic7770 >= Rev E, Wide Channel A, SCSI Id=7, 4/255 SCBs
aha0 at 0x130-0x133 irq 11 drq 7 on isa
aha0: AHA-1542C FW Rev. 0.1 (ID=44) SCSI Host Adapter, SCSI ID 7, 17 CCBs
da1 at ahc0 bus 0 target 3 lun 0
da1: <SEAGATE ST410800N 7110> Fixed Direct Access SCSI2 device
da1: 10.0MB/s transfers (10.0MHz, offset 15), Tagged Queueing Enabled
da1: 8347MB (17096357 512 byte sectors: 64H 32S/T 8347C)
da0 at aha0 bus 0 target 0 lun 0
da0: <FUJITSU M2624F-512 0405> Fixed Direct Access SCSI2 device
da0: 3.333MB/s transfers (3.333MHz, offset 8)
da0: 496MB (1015812 512 byte sectors: 64H 32S/T 496C)
cd0 at aha0 bus 0 target 5 lun 0
cd0: <TOSHIBA CD-ROM XM-3401TA 0283> Removable CD-ROM SCSI2 device
cd0: 3.300MB/s transfers
cd0: cd present [191673 x 2048 byte records]
da2 at aha0 bus 0 target 2 lun 0
da2: <HP C2257 0BC4> Fixed Direct Access SCSI2 device
da2: 3.300MB/s transfers
da2: 1910MB (3912172 512 byte sectors: 64H 32S/T 1910C)



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