Date: Mon, 1 Mar 2010 21:45:19 -0600 From: Dan Nelson <dnelson@allantgroup.com> To: Aryeh Friedman <aryeh.friedman@gmail.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: <20100302034519.GW70798@dan.emsphone.com> In-Reply-To: <bef9a7921003011615g15198714kc5408cd46eda5a91@mail.gmail.com> References: <bef9a7921003011615g15198714kc5408cd46eda5a91@mail.gmail.com>
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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": 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 -- Dan Nelson dnelson@allantgroup.com
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