Date: Mon, 17 May 2010 11:24:11 -0700 From: Jeremy Chadwick <freebsd@jdc.parodius.com> To: Todd Wasson <tsw5@duke.edu> Cc: freebsd-fs@freebsd.org Subject: Re: zfs drive replacement issues Message-ID: <20100517182411.GA14251@icarus.home.lan> In-Reply-To: <53F15A8B-77DA-4CEF-A790-2902BEC91002@duke.edu> References: <0B97967D-1057-4414-BBD4-4F1AA2659A5D@duke.edu> <4BF0F231.9000706@mapper.nl> <53F15A8B-77DA-4CEF-A790-2902BEC91002@duke.edu>
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On Mon, May 17, 2010 at 02:17:48PM -0400, Todd Wasson wrote: > Hi Mark, I was about to try this, but I just tried putting the "old" > (damaged) drive back in the pool and detaching the "new" drive from > the pool, which I've tried before, but for some reason this time it > succeeded. I was then able to "zpool offline" the old drive, > physically replace it with the new one, and "zpool replace" the old > one with the new one. It just finished successfully resilvering, and > apparently everything is working well. I'm going to initiate a scrub > to be sure that everything is alright, but I'm fairly sure that the > problem is solved. I didn't do anything that I hadn't already tried, > so I don't know why it worked this time, but I'm not complaining. > Thanks to everyone for your help; at the very least, the idea of > putting the original drive back into the machine and mucking around > with it led me in the right direction. Next time I'll be sure to > issue an offline command before replacing a device! Todd, Can you provide some details about the controller you have these disks attached to? "dmesg | egrep -i 'ata|ahci'" should be sufficient at this point. SMART statistics for the drive(s) you feel might be bad would also help. I can try my best to describe the conditions of the disk(s) based on output from "smartctl -a /dev/adX". You can install smartmontools from ports/sysutils/smartmontools. Thanks. -- | 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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