Date: Thu, 19 May 2011 17:20:22 -0400 From: John D <jwd@SlowBlink.Com> To: mj@feral.com Cc: freebsd-geom@freebsd.org Subject: Re: LSI 9200-8e/gmultipath/ZFS cable pull kernel crash Message-ID: <20110519212022.GA84918@slowblink.com> In-Reply-To: <alpine.BSF.2.00.1105190852280.92179@ns1.feral.com> References: <20110519143935.GA83122@slowblink.com> <alpine.BSF.2.00.1105190852280.92179@ns1.feral.com>
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----- mjacob@freebsd.org's Original Message ----- > > On Thu, 19 May 2011, John D wrote: > > >.. > > Not a zfs issue I believe, so dropping them -fs the thread. > > When you do the cable pull, is any I/O active? Yes, I have about 600MB/s running to the array: dd if=/dev/zero bs=1m | mbuffer -m 64m -o /lsi/bigfile with mbuffer reporting the following in @ 697 MiB/s, out @ 697 MiB/s, 11.8 GiB total, buffer 100% full when I pull the cable. Playing with it today, I'm wondering if the 1st cable actually has any active providers on it (luck of the draw that I pulled it first), and the 2nd has all the active providers on it. I have not explicity tried to balance the i/o on the two cables with gmultipath rotate. Having a bit of trouble getting a good objdump of g_multipath.o so I may do a new src update. Thx
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