Date: Tue, 5 Apr 2005 20:50:00 -0500 From: Karl Denninger <karl@denninger.net> To: "Matthew N. Dodd" <mdodd@freebsd.org> Cc: freebsd-stable@freebsd.org Subject: Re: DANGER WILL ROBINSON! SERIOUS problem with current 5.4-PRERELEASE - FURTHER UPDATE Message-ID: <20050405205000.A805@denninger.net> In-Reply-To: <20050405202504.A6216@denninger.net>; from Karl Denninger on Tue, Apr 05, 2005 at 08:25:04PM -0500 References: <20050329200841.A772@denninger.net> <20050329233843.L328@sasami.jurai.net> <20050329230830.A3222@denninger.net> <20050329234318.A3883@denninger.net> <20050330210830.A46956@denninger.net> <20050330230046.A68235@denninger.net> <20050331120100.P328@sasami.jurai.net> <20050331110608.A81295@denninger.net> <20050405202504.A6216@denninger.net>
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On Tue, Apr 05, 2005 at 08:25:04PM -0500, Karl Denninger wrote: > > This patch appears to be "safe". > > I have about 2 hours on the production machine right now post-rebuild (which > had to complete first) with the added "callout_drain" in, have taken two DMA > WRITE retries, and have not yet seen any evidence of destabilization. > > This is good evidence but not proof - before I took out the original line > the FIRST write retry would immediately cause the system to become unstable. I have forced over a dozen errors (high rate I/O) and still no stability problems. Patch looks good. -- -- Karl Denninger (karl@denninger.net) Internet Consultant & Kids Rights Activist http://www.denninger.net My home on the net - links to everything I do! http://scubaforum.org Your UNCENSORED place to talk about DIVING! http://www.spamcuda.net SPAM FREE mailboxes - FREE FOR A LIMITED TIME! http://genesis3.blogspot.com Musings Of A Sentient Mind
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