Date: Fri, 28 May 2010 06:49:26 -0700 From: Jeremy Chadwick <freebsd@jdc.parodius.com> To: "James R. Van Artsdalen" <james-freebsd-fs2@jrv.org> Cc: freebsd-fs <freebsd-fs@freebsd.org> Subject: Re: ZFS: how to replace a dead disk? Message-ID: <20100528134926.GB75411@icarus.home.lan> In-Reply-To: <4BFFC6E6.2070505@jrv.org> References: <4BFFC6E6.2070505@jrv.org>
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On Fri, May 28, 2010 at 08:36:38AM -0500, James R. Van Artsdalen wrote: > What's the right way to replace a dead disk under ZFS? > > When ada1 failed I tried "zpool replace jwrc ada1" and when it finished > I got this: > > root@cyclone ~]# zpool status > pool: jwrc > state: DEGRADED > 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: resilver completed after 14h55m with 11 errors on Fri May 28 > 04:28:56 2010 > config: > > NAME STATE READ WRITE CKSUM > jwrc DEGRADED 0 0 11 > raidz1 DEGRADED 0 0 23 > ada2 ONLINE 0 0 0 889M resilvered > replacing DEGRADED 0 0 0 > ada1/old UNAVAIL 0 256K 0 cannot open > ada1 ONLINE 0 0 0 1.47T resilvered > ada3 ONLINE 0 0 0 879M resilvered > ada4 ONLINE 0 0 0 808M resilvered > > errors: 5 data errors, use '-v' for a list > > --- > > It says "replacing" and that the device, vdev and pool are degraded, yet > the "resilver" finished hours ago. I cannot detach the ada1/old entry. > > Is there some other command I should have used to remove the dead ada1 > device? What version of FreeBSD? Please provide uname -a output and not "8.0" or something equally as terse. Some clarification: you didn't remove the device, you simply told ZFS to assuming that the device had been replaced. What did you do (both physically and software/command-line-wise) *prior* to issuing "zpool replace jwrc ada1"? -- | Jeremy Chadwick jdc@parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB |
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