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Date: Wed, 21 Mar 2001 17:50:39 -0600
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From: rand@meridian-enviro.com
To: Mike Smith <msmith@FreeBSD.ORG>
Cc: freebsd-stable@FreeBSD.ORG, Mike Tancsa <mike@sentex.net>,
	bryanh@meridian-enviro.com
Subject: Re: 3ware problems 
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Mike> If you can add another function like twe_printstate that invokes
Mike> twe_print_request on each of the requests on the busy queue and
Mike> let me know what they look like, that might give me some clues.

OK, I haven't written the twe_printstate function yet, but I think I
have the request. I got the filesystem wedged first, and then browsing
the datastructures with DDB, I think I've found the busy queue. Here's
the request:

db> call twe_print_request(0xc1529800)
twe0: CMD: request_id 89  opcode <READ>  size 7  unit 0  host_id 0
twe0:  status 0  flags 0x0  count 16  sgl_offset 3
twe0:  lba 264703
twe0:   0: 0xce4f000/4096
twe0:   1: 0x2ab0000/4096
twe0:  tr_command 0xc1529800/0x1749d800  tr_data 0xcb928000/0xce4f000,8192
twe0:  tr_status 2  tr_flags 0x1  tr_complete 0xc011f170  tr_private 0

I'm rebuilding the kernel now with the function twe_printstate, after
I figured it out with the debugger. (This reminds me of a saying that
has to do with horses and carriages, hmm.)

Oh, btw, it took over 3 million rows to get it stuck this time. Gotta
love a test cycle of 6 hours or so.  Sigh.

I also paniced the kernel from DDB, so I have a core file too.

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