Date: Sat, 15 May 2010 09:14:45 +0200 From: Pieter de Boer <pieter@thedarkside.nl> To: Terry Kennedy <TERRY@tmk.com> Cc: freebsd-stable@FreeBSD.org Subject: Re: Read / write timeouts on SATA disks connected to ICH9 Message-ID: <4BEE49E5.1040005@thedarkside.nl> In-Reply-To: <01NN4A2NF0M4006QOF@tmk.com>
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Hi Terry, > I have a bunch of R300's here. From one that is using the on-board SATA > and 2 drives in a gmirror setup (very similar to the OP) after 18 hours > of uptime: > > [0:2] speedtest:~> vmstat -i > interrupt total rate > irq23: atapci0 254116 3 Interesting. Which version of FreeBSD is this system running? I guess you didn't experience any of the timeouts I'm seeing? > I also have another R300 with Dell's "SAS 6/iR" card (a re-branded LSI > 1068-something, seen as "mpt" by FreeBSD). While Dell only sells that as > part of a package deal with the hot-swap backplane and redundant power > supplies, there's no reason you couldn't pick one up on eBay and add it > yourself. You'll need some sort of breakout cable to get from the big > connector on the SAS 6 to individual SATA ports. Yeah, this R300 was bought second-hand and unfortunately the owner pulled the RAID card out. It's something to consider, getting one of those cards. Do you use the RAID-features of the drive and if so, does that work well? I'm a bit hesitant to use hardware raid; it would be a big plus if the RAID disks could also be used stand-alone if need be (which is easy with gmirror because of its metadata being stored in the drive's last sector). Thanks, Pieterhome | help
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