Date: Mon, 7 Jul 2008 17:41:04 -0700 From: "adam radford" <aradford@gmail.com> To: "Mike Andrews" <mandrews@bit0.com> Cc: Manjunath Ranganathaiah <mranganathaiah@amcc.com>, freebsd-hardware@freebsd.org Subject: Re: Debugging 3Ware 9000 series hangs under load Message-ID: <b1bc6a000807071741w2528f16boeb9c7d187b182d08@mail.gmail.com> In-Reply-To: <20080707190237.K70038@beast.int.bit0.com> References: <20080707190237.K70038@beast.int.bit0.com>
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On Mon, Jul 7, 2008 at 4:26 PM, Mike Andrews <mandrews@bit0.com> wrote: > I've occasionally had problems with 3Ware 9550SX, 9650SE, and now 9690SA > cards hanging under load. By "hanging" I mean "swap_pager: indefinite wait > buffer" messages on the console, machine still pingable, etc -- basically a > livelock situation. "Heavy load" usually involves a busy MySQL instance > combined with, say, copying some multi-gigabyte files, maybe also combined > with rsync, all running concurrently. The problem is the hangs are > extremely sporadic and not easily reproducible on demand. It seems to happen > with both ZFS and UFS2; I've been sticking to UFS2 for this for now due to > some weird ZFS+MySQL issues (which are annoying but not relevant to this > particular problem)... > > On a FreeBSD/amd64 7-STABLE system built from less-than-one-week-old source, > with serial console and the kernel debugger compiled in, but being a > complete idiot on how to use KDB, can someone tell me what would be the most > useful info I could gather from KDB the next time this happens? Mike, Can you first run the 3ware command line utility (tw_cli) and post the results of: tw_cli info c0 diag -Adam
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