Date: Mon, 10 Dec 2012 22:20:45 +0100 From: Tom <freebsdlists@bsdunix.ch> To: freebsd-fs@freebsd.org Subject: Re: ZFS mirrored separate log device replacement scans entire pool? Message-ID: <50C6522D.6080808@bsdunix.ch> In-Reply-To: <CADUQDp8aM0LmZFvFjii_h-26E5CH0Asu5F4KNUTN%2BZ37jne9UA@mail.gmail.com> References: <CADUQDp8aM0LmZFvFjii_h-26E5CH0Asu5F4KNUTN%2BZ37jne9UA@mail.gmail.com>
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Hi Andrew Use remove and add for log devices instead of replace. This prevents the pool from resilvering and takes only a couple of seconds. Regards, Tom Am 10.12.12 20:38, schrieb Andrew Leonard: > This is likely more of a curiosity than an issue, unless it indicates I did > something wrong: Why does replacing half of a mirrored ZFS separate log > cause the entire zpool to be scanned? To wit: > >> zpool status > pool: tank01 > state: DEGRADED > status: One or more devices is currently being resilvered. The pool will > continue to function, possibly in a degraded state. > action: Wait for the resilver to complete. > scan: resilver in progress since Mon Dec 10 11:15:49 2012 > 7.54T scanned out of 27.0T at 3.12G/s, 1h46m to go > 0 resilvered, 27.93% done > config: > > NAME STATE READ WRITE CKSUM > tank01 DEGRADED 0 0 0 > raidz2-0 ONLINE 0 0 0 > da2 ONLINE 0 0 0 > da3 ONLINE 0 0 0 > da4 ONLINE 0 0 0 > da5 ONLINE 0 0 0 > da6 ONLINE 0 0 0 > da7 ONLINE 0 0 0 > da8 ONLINE 0 0 0 > da9 ONLINE 0 0 0 > da10 ONLINE 0 0 0 > da11 ONLINE 0 0 0 > raidz2-1 ONLINE 0 0 0 > da12 ONLINE 0 0 0 > da13 ONLINE 0 0 0 > da14 ONLINE 0 0 0 > da15 ONLINE 0 0 0 > da16 ONLINE 0 0 0 > da17 ONLINE 0 0 0 > da18 ONLINE 0 0 0 > da19 ONLINE 0 0 0 > da20 ONLINE 0 0 0 > da21 ONLINE 0 0 0 > raidz2-2 ONLINE 0 0 0 > da22 ONLINE 0 0 0 > da23 ONLINE 0 0 0 > da24 ONLINE 0 0 0 > da32 ONLINE 0 0 0 > da26 ONLINE 0 0 0 > da27 ONLINE 0 0 0 > da33 ONLINE 0 0 0 > da29 ONLINE 0 0 0 > da30 ONLINE 0 0 0 > da31 ONLINE 0 0 0 > logs > mirror-3 DEGRADED 0 0 0 > da34 ONLINE 0 0 0 > replacing-1 OFFLINE 0 0 0 > 1754652639903581713 OFFLINE 0 0 0 was /dev/da35 > da25 ONLINE 0 0 0 > > errors: No known data errors >> zpool get version tank01 > NAME PROPERTY VALUE SOURCE > tank01 version 28 default >> zfs get version tank01 > NAME PROPERTY VALUE SOURCE > tank01 version 5 - >> uname -a > FreeBSD zfs12.sbri.org 8.3-STABLE FreeBSD 8.3-STABLE #0: Sun Aug 12 > 07:31:24 PDT 2012 root@zfs12.sbri.org:/usr/obj/usr/src/sys/GENERIC > amd64 > > Thanks, > Andy > _______________________________________________ > freebsd-fs@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-fs > To unsubscribe, send any mail to "freebsd-fs-unsubscribe@freebsd.org" >
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