On Apr 4, 2012, at 12:08 PM, Jan-Aage Frydenbø-Bruvoll wrote: > Dear List, > > I am struggling with a storage pool on a server, where I would like to > offline a device for replacement. The pool consists of two-disk stripes set > up in mirrors (yep, stupid, but we were running out of VDs on the controller > at the time, and that's where we are now...).
Which OS and release? There was a bug in some releases circa 2010 that you might be hitting. It is harmless, but annoying. -- richard > > Here's the pool config: > > root@storage:~# zpool status -v tank > pool: tank > 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 > scan: resilvered 321G in 36h58m with 1 errors on Wed Apr 4 06:46:10 2012 > config: > > NAME STATE READ WRITE CKSUM > tank ONLINE 0 0 0 > mirror-0 ONLINE 0 0 0 > c1t14d0 ONLINE 0 0 0 > c1t15d0 ONLINE 0 0 0 > mirror-1 ONLINE 0 0 0 > c1t19d0 ONLINE 0 0 0 > c1t18d0 ONLINE 0 0 0 > mirror-2 ONLINE 0 0 0 > c1t20d0 ONLINE 0 0 0 > c1t21d0 ONLINE 0 0 0 > mirror-3 ONLINE 0 0 0 > c1t22d0 ONLINE 0 0 0 > c1t23d0 ONLINE 0 0 0 > logs > mirror-4 ONLINE 0 0 0 > c2t2d0p7 ONLINE 0 0 0 > c2t3d0p7 ONLINE 0 0 0 > cache > c2t2d0p11 ONLINE 0 0 0 > c2t3d0p11 ONLINE 0 0 0 > > errors: Permanent errors have been detected in the following files: > > <0xeb78a>:<0xa8be6b> > > What I would like to do is offline or detach c1t19d0, which the server won't > let me do: > > root@storage:~# zpool offline tank c1t19d0 > cannot offline c1t19d0: no valid replicas > > The errored file above is not important to me; it was part of a snapshot > since deleted. Could that be related to this? > > How can I find more information about why it simultaneously seems to think > mirror-1 above is ok and broken? > > Any ideas would be greatly appreciated. Thanks in advance for your kind > assistance. > > Best regards > Jan > > > _______________________________________________ > zfs-discuss mailing list > zfs-discuss@opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss -- DTrace Conference, April 3, 2012, http://wiki.smartos.org/display/DOC/dtrace.conf ZFS Performance and Training richard.ell...@richardelling.com +1-760-896-4422
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