Date: Mon, 12 Nov 2007 09:26:38 -0800 From: David Newman <dnewman@networktest.com> To: freebsd-questions@freebsd.org Subject: Re: dealing with a failing drive Message-ID: <47388CCE.6080201@networktest.com> In-Reply-To: <20071112161416.GB98697@gizmo.acns.msu.edu> References: <4736593E.1090905@networktest.com> <64c038660711102109x2ea186afjdd219292d8eed700@mail.gmail.com> <47372644.4060201@networktest.com> <20071112161416.GB98697@gizmo.acns.msu.edu>
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 11/12/07 8:14 AM, Jerry McAllister wrote: > An update: After doing what you suggest (leaving in the "good" disk, > adding a new disk, RAID rebuilding) I still got soft write errors -- > with *either one* of the disks I tried. > > Then I tried putting both disks in an identical server and they came up > fine, no read or write errors. > > Ergo, the bad RAID controller is bad and the disks may be OK. > >> Probably not. >> Generally, if the RAID controller is bad, you will see errors >> all over and not it just one place, tho I suppose it is possible. >> Check and see what it reports as error locations and see if they >> move around any. Jerry, thanks for your response. After 36 hours of running the same disks in a different, identical machine there hasn't been a single read or write error. I'm hardly a storage expert but from the evidence I have I'm inclined to believe the root cause was a bad RAID controller and not failed disks. I'm aware of CLI tools to monitor 3Ware SATA RAID controllers. Anyone know if there are similar tools for HP/Compaq SCSI RAID controllers? thanks dn -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.3 (Darwin) iD8DBQFHOIzOyPxGVjntI4IRAmMWAJ4grMR6mcL/j9qbcGY/fJfDEqv3KgCg8BVW wcHVDkZPykFcQzVYnp8mx+g= =8rws -----END PGP SIGNATURE-----
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