Date: Mon, 08 Jul 2002 11:51:33 -0700 From: Dave Hayes <dave@jetcafe.org> To: freebsd-scsi@freebsd.org Subject: Random hangs on (at least) SCSI reads Message-ID: <200207081851.g68Ipc069208@hokkshideh2.jetcafe.org>
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Note the following machine:
FreeBSD dns.apolloi.com 4.5-RELEASE-p4
...
ahc0: <Adaptec 29160 Ultra160 SCSI adapter> port 0xd800-0xd8ff mem
0xff8ff000-0xff8fffff irq 10 at device 1.0 on pci1
aic7892: Ultra160 Wide Channel A, SCSI Id=7, 32/255 SCBs
...
ahc1: <Adaptec 29160 Ultra160 SCSI adapter> port 0xd400-0xd4ff mem
0xff8fd000-0xff8fdfff irq 11 at device 3.0 on pci1
aic7892: Ultra160 Wide Channel A, SCSI Id=7, 32/255 SCBs
...
da0 at ahc0 bus 0 target 0 lun 0
da0: <IBM IC35L036UWD210-0 S5BS> Fixed Direct Access SCSI-3 device
da0: 160.000MB/s transfers (80.000MHz, offset 63, 16bit), Tagged Queueing
Enabled
da0: 35003MB (71687340 512 byte sectors: 64H 32S/T 35003C)
da1 at ahc1 bus 0 target 0 lun 0
da1: <IBM IC35L036UWD210-0 S5BS> Fixed Direct Access SCSI-3 device
da1: 160.000MB/s transfers (80.000MHz, offset 63, 16bit), Tagged Queueing
Enabled
da1: 35003MB (71687340 512 byte sectors: 64H 32S/T 35003C)
I can consistently get this to hang (machine locks up, no panic or
anything to console) on multiple machines with the exact same
configuration by reading from the disk at high rates of speed
(e.g. while (1) { find / -exec cat {} \; >/dev/null }).
Anyone have any experience with this problem? Yes, I am working on
upgrading it to 4.6-p1.
------
Dave Hayes - Consultant - Altadena CA, USA - dave@jetcafe.org
>>> The opinions expressed above are entirely my own <<<
The end of the human race will be that it will eventually
die of civilization.
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