Date: Thu, 3 Jan 2008 11:18:25 -0600 From: Brooks Davis <brooks@freebsd.org> To: Eric Anderson <anderson@freebsd.org> Cc: freebsd-fs@freebsd.org, ticso@cicely.de Subject: Re: ZFS i/o errors - which disk is the problem? Message-ID: <20080103171825.GA28361@lor.one-eyed-alien.net> In-Reply-To: <477D16EE.6070804@freebsd.org> References: <477B16BB.8070104@freebsd.org> <20080102070146.GH49874@cicely12.cicely.de> <477B8440.1020501@freebsd.org> <200801031750.31035.peter.schuller@infidyne.com> <477D16EE.6070804@freebsd.org>
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--vkogqOf2sHV7VnPd Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Jan 03, 2008 at 11:10:06AM -0600, Eric Anderson wrote: > Peter Schuller wrote: >>> I can believe a problematic SATA controller (it's an add-on PCI board), >>> but does anyone know of a way to ask ZFS which devices in a pool it >>> thinks has issues? >> That is exactly what zpool status is intended to tell you. That is, the= =20 >> disks that you are seeing checksum errors on are the ones seeing the=20 >> faults. In your case both drives show checksum errors (for some reason). >=20 > Yea, I suspect it's the cheesy SATA controller I stuck in the system. I= =20 > suppose I will rebuild my NFS server with different hardware :( We've definitely seen cases where hardware changes fixed ZFS checksum error= s. In once case, a firmware upgrade on the raid controller fixed it. In anoth= er case, we'd been connecting to an external array with a SCSI card that didn't have a PCI bracket and the errors went away when the replacement one arrived and was installed. The fact that there were significant errors caught by Z= FS was quite disturbing since we wouldn't have found them with UFS. -- Brooks --vkogqOf2sHV7VnPd Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (FreeBSD) iD8DBQFHfRjgXY6L6fI4GtQRAuq3AJ936BpveFQhTBHDNJcED+abpsrtNQCg0d78 lVmsueyAeIh9dDHamgndOYU= =XUYN -----END PGP SIGNATURE----- --vkogqOf2sHV7VnPd--
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