Date: Wed, 16 Dec 2009 06:04:40 -0600 From: "James R. Van Artsdalen" <james-freebsd-fs2@jrv.org> To: Matt Simerson <matt@corp.spry.com> Cc: freebsd-fs@freebsd.org Subject: Re: ZFS RaidZ2 with 24 drives? Message-ID: <4B28CCD8.2090406@jrv.org> In-Reply-To: <42952D86-6B4D-49A3-8E4F-7A1A53A954C2@spry.com> References: <568624531.20091215163420@pyro.de> <42952D86-6B4D-49A3-8E4F-7A1A53A954C2@spry.com>
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Results like this indicate a problem with the disk system. There is a problem with the driver, card, cables or disks, etc. The Areca probably has problems with JBOD mode (I was unable to get a different Areca RAID card to work reliably in JBOD mode this spring so I'm not surprised). If these are SATA drives try a card using the Silicon Image 3124 controller and the SIIS driver: for SAS try the LSI 3801e or 3081E-R cards. > $ ssh back02 zpool status > pool: back02 > state: ONLINE > status: One or more devices has experienced an error resulting in data > corruption. Applications may be affected. > action: Restore the file in question if possible. Otherwise restore the > entire pool from backup. > see: http://www.sun.com/msg/ZFS-8000-8A > scrub: none requested > config: > > NAME STATE READ WRITE CKSUM > back02 ONLINE 0 0 934K > raidz1 ONLINE 0 0 0 > da0 ONLINE 0 0 0 > da1 ONLINE 0 0 0 > da2 ONLINE 0 0 0 > da3 ONLINE 0 0 0 > da4 ONLINE 0 0 0 > da5 ONLINE 0 0 0 > da6 ONLINE 0 0 0 > raidz1 ONLINE 0 0 1.83M > da8 ONLINE 0 0 0 > da9 ONLINE 0 0 0 > da10 ONLINE 0 0 0 > da11 ONLINE 0 0 0 > da12 ONLINE 0 0 0 > da13 ONLINE 0 0 0 > da14 ONLINE 0 0 0 > raidz1 ONLINE 0 0 1.83M > da16 ONLINE 0 0 0 > spare ONLINE 0 0 0 > da17 ONLINE 0 0 0 > da7 ONLINE 0 0 0 > da18 ONLINE 0 0 0 > da19 ONLINE 0 0 0 > da20 ONLINE 0 0 0 > da21 ONLINE 0 0 0 > da22 ONLINE 0 0 0 > spares > da15 AVAIL > da23 AVAIL > da7 INUSE currently in use > > errors: 241 data errors, use '-v' for a list
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