Date: Wed, 20 Jan 1999 10:37:59 -0500 (EST) From: spork <spork@super-g.com> To: freebsd-scsi@FreeBSD.ORG Subject: CMD 5440 - timeouts Message-ID: <Pine.BSF.4.00.9901201030330.25680-100000@super-g.inch.com>
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Hi,
I posted this a while back and have also tried to take up the issue with
CMD tech support. Basically, I have a CMD CRD-5440 scsi-scsi raid
controller hanging off a 2940UW. It has 4 channels, 2 for drives, 2 for
hosts. There are 2 hosts connected to it. A quirk entry has been added
to lower the number of tags to a level recommended by Ken and CMD.
CMD sees nothing wrong, but can't explain what would cause their device to
not respond for >60 seconds... Logs from the raid controller show nothing
but the resets the host sends after it loses contact with the raid box.
I'm waiting to resolve this to put the box in production, so it doesn't
necessarily look to be triggered by load. I've run up to 5 concurrent
bonnies on it at once without triggering this; sometimes it will just
happen in the middle of the day, sometimes at the 2am daily run...
Not being a expert, what can I do to gather more data? Is there some
extra debugging I can turn on in the cam code? This is a -stable snap
from late august running the cam patches.
Snippet of logs below...
Thanks for any help,
Charles
Jan 18 10:59:38 newshell /kernel: (da0:ahc0:0:0:0): SCB 0xa - timed out
while idle, LASTPHASE == 0x1, SCSISIGI == 0x0
Jan 18 10:59:41 newshell /kernel: SEQADDR == 0xb
Jan 18 10:59:41 newshell /kernel: SSTAT1 == 0xa
Jan 18 10:59:41 newshell /kernel: (da0:ahc0:0:0:0): Queuing a BDR SCB
Jan 18 10:59:41 newshell /kernel: (da0:ahc0:0:0:0): Bus Device Reset
Message Sent
Jan 18 10:59:41 newshell /kernel: (da0:ahc0:0:0:0): no longer in timeout,
status = 34b
Jan 18 10:59:41 newshell /kernel: ahc0: Bus Device Reset Sent. 6 SCBs
aborted
---
Charles Sprickman
spork@super-g.com
---
"...there's no idea that's so good you can't
ruin it with a few well-placed idiots."
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