Date: Sat, 18 Aug 2007 09:09:12 +0100 From: Thomas Hurst <tom.hurst@clara.net> To: Vivek Khera <vivek@khera.org> Cc: FreeBSD Stable <freebsd-stable@freebsd.org> Subject: Re: large RAID volume partition strategy Message-ID: <20070818080912.GA6704@voi.aagh.net> In-Reply-To: <EED39309-A95F-4A2D-8E35-C1650A55E482@khera.org> References: <31BB09D7-B58A-47AC-8DD1-6BB8141170D8@khera.org> <fa5b4v$8e5$1@sea.gmane.org> <EED39309-A95F-4A2D-8E35-C1650A55E482@khera.org>
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* Vivek Khera (vivek@khera.org) wrote: > I'll investigate this option. Does anyone know the stability > reliability of the mpt(4) driver on CURRENT? Is it out of GIANT lock > yet? It was hard to tell from the TODO list if it is entirely free of > GIANT or not. Yes, mpt(4) was made MPSAFE in revision 1.41, about 3 months ago: http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/dev/mpt/mpt.c#rev1.41 I've not seen any stability issues with mpt in either of our test systems, running heavy MySQL load over >20 spindles and a couple of controllers each. > My only fear of this is that once this system is in production, that's > pretty much it. Maintenance windows are about 1 year apart, usually > longer. Best temper your fear with some thorough testing then. If you are going to use ZFS in such a situation, though, I might be strongly tempted to use Solaris instead. Why the long gaps between maintenance? -- Thomas 'Freaky' Hurst http://hur.st/
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