Date: Mon, 11 Aug 2014 14:38:59 +0200 From: Bengt Ahlgren <bengta@sics.se> To: Garrett Wollman <wollman@bimajority.org> Cc: freebsd-scsi@freebsd.org, freebsd-stable@freebsd.org Subject: Re: 9.3-RELEASE still instapanics on multi-mps(4) servers Message-ID: <uh7ha1jryjg.fsf@P142s.sics.se> In-Reply-To: <21474.34330.572142.206098@hergotha.csail.mit.edu> (Garrett Wollman's message of "Wed, 6 Aug 2014 15:46:34 -0400") References: <21474.34330.572142.206098@hergotha.csail.mit.edu>
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Garrett Wollman <wollman@bimajority.org> writes: > Remember about six months ago when I tested 9-stable on one of my big > NFS servers, and had it panic in the middle of the USB probe, but > ultimately bisected the problem to an update to the mps(4) driver? I > had to stop investigating and get the server working (which I did, by > installing 9.2 instead of something newer and presumably faster). I'm > at the point now where I'd like to upgrade my file servers to 9.3, and > I can't, because of this issue, so it's time to start tracking down > the bug again. > > I have two test servers now. 9.3 works just fine on one of them, and > panics on the other. The one it works on is slightly older, and has > an mpt(4) controller for the boot drives, as opposed to the system > where the panic happens, which is mps(4)-only. Both systems have two > SAS2116 controllers for external drives; the ones on the working > system have drives attached, and the ones on the non-working system > are not connected to anything (and in fact disabled in the BIOS for > now). > > Any experts want to suggest where to start (besides, obviously, > attaching a serial console, which I haven't done yet)? I saw one > change in the svn logs for 9.3 prior to the release which looked like > it might be a relevant fix, but it clearly hasn't improved anything > for my servers. I have a dual-mps (one Dell H200 and one LSI 9207) system now running 9.1 (w patched sys/kern/kern_intr.c) that I intend to upgrade to 9.3 shortly. Is it enough to boot a 9.3 memstick to provoke the issue? Bengt
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