Date: Mon, 01 Mar 2010 23:03:10 -0500 From: "Aryeh M. Friedman" <aryeh.friedman@gmail.com> To: Dan Nelson <dnelson@allantgroup.com> Cc: freebsd-hackers@freebsd.org, Garrett McNeill <garrett@garrettmcneill.com> Subject: Re: unable to offline a failing drive in a zfs RAIDZ Message-ID: <4B8C8DFE.3010100@gmail.com> In-Reply-To: <20100302034519.GW70798@dan.emsphone.com> References: <bef9a7921003011615g15198714kc5408cd46eda5a91@mail.gmail.com> <20100302034519.GW70798@dan.emsphone.com>
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Dan Nelson wrote: > In the last episode (Mar 01), Aryeh Friedman said: > >> I have a raidz setup as per the handbook but when I attempt to "offline" a >> failing drive it will not let me: >> >> kate# zpool status -c >> invalid option 'c' >> usage: >> status [-vx] [pool] ... >> kate# zpool status -v >> pool: storage >> state: ONLINE >> scrub: resilver completed with 0 errors on Mon Mar 1 17:36:48 2010 >> config: >> >> NAME STATE READ WRITE CKSUM >> storage ONLINE 0 0 0 >> raidz1 ONLINE 0 0 0 >> ad7 ONLINE 0 0 0 >> ad8 ONLINE 0 0 0 >> ad9 ONLINE 0 0 0 >> ad10 ONLINE 0 0 0 >> ad12 ONLINE 0 0 0 >> >> errors: No known data errors >> kate# zpool offline storage ad12 >> cannot offline ad12: no valid replicas >> > > What version of FreeBSD are you running? This looks like a known bug. It > originally worked for mirrors but not RAIDZ vdevs - "zpool offline is a bit > too conservative": > FreeBSD kate.istudentunion.com 7.2-RELEASE-p1 FreeBSD 7.2-RELEASE-p1 #0: Tue Jun 9 21:30:43 UTC 2009 root@i386-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC i386 > http://bugs.opensolaris.org/bugdatabase/view_bug.do?bug_id=2171359 , and > works for me on a 7-stable kernel: > > (root@studio) /root># uname -a > FreeBSD studio.evoy.net 7.3-PRERELEASE FreeBSD 7.3-PRERELEASE #53: Tue Feb 2 17:19:46 CST 2010 zsh@studio.evoy.net:/usr/src-7/sys/amd64/compile/STUDIO amd64 > (root@studio) /root># mdconfig -a -t swap -s 1g ; mdconfig -a -t swap -s 1g ; mdconfig -a -t swap -s 1g > md1 > md2 > md3 > (root@studio) /root># zpool create dummy raidz md1 md2 md3 > (root@studio) /root># zpool offline dummy md2 > (root@studio) /root># zpool status dummy > pool: dummy > state: DEGRADED > status: One or more devices has been taken offline by the administrator. > Sufficient replicas exist for the pool to continue functioning in a > degraded state. > action: Online the device using 'zpool online' or replace the device with > 'zpool replace'. > scrub: none requested > config: > > NAME STATE READ WRITE CKSUM > dummy DEGRADED 0 0 0 > raidz1 DEGRADED 0 0 0 > md1 ONLINE 0 0 0 > md2 OFFLINE 0 0 0 > md3 ONLINE 0 0 0 > > >
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