Date: Wed, 13 Aug 2003 18:11:11 -0700 From: Chuck Tuffli <chuck_tuffli@agilent.com> To: "Kenneth D. Merry" <ken@kdm.org> Cc: freebsd-scsi@freebsd.org Subject: Re: problem running scsi_target Message-ID: <20030814011111.GB3594@cre85086tuf.rose.agilent.com> In-Reply-To: <20030813034951.GA91644@panzer.kdm.org> References: <20030813034951.GA91644@panzer.kdm.org>
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Aside from the 2 fixes you mention below (without which bad things
happen), most of this was confusion on my part. I expected that isp(4)
would act as both target and initiator on a loop such that
camcontrol rescan all
on the machine running the target would have turned up the FreeBSD
Disk. Once I attached an initiator on a different box, I got the
expected
# camcontrol devlist
...
<FreeBSD Emulated Disk 0.1> at scbus2 target 0 lun 0 (da1,pass1)
I also didn't understand that "main loop beginning" meant that the
target was waiting for something. As soon as I did a rescan with the
other initiator, it was obvious scsi_target wasn't dead.
Thanks for the help Ken!
On Tue, Aug 12, 2003 at 11:49:51PM -0400, Kenneth D. Merry wrote:
[snip]
> One thing I found is that the scsi_target(8) code doesn't entirely play
> well with the isp(4) driver.
>
> I had to make some tweaks to get things working more or less okay, at
> least
> with tagged queueing turned on:
>
> - enable autosense. Fibre channel, and packetized parallel SCSI, do
> autosense, but it is disabled by default. Go into scsi_cmds.c, and
> in
> tcmd_sense(), uncomment the code after if (ctio != NULL) { ... that
> fills in the sense buffer and sets the CAM_SEND_SENSE command.
>
> - go into scsi_target.h and increase the value of MAX_INITIATORS to 256
> instead of 16. I ended up running out of CCBs otherwise, at least
> with
> tagged queueing turned on. (I made some other tweaks to it -- fake
> ramdisk support -- that may have caused that problem, though.)
--
Chuck Tuffli <chuck_tuffli AT NO_SPAM agilent DOT com>
Agilent Technologies, Storage and Networking
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