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Date:      Thu, 22 Apr 2010 18:58:29 +0100
From:      Martin Simmons <martin@lispworks.com>
To:        freebsd-fs@freebsd.org
Subject:   Re: zfs: unexpected resilver of old disk when attaching a new mirror disk
Message-ID:  <201004221758.o3MHwTb2006547@higson.cam.lispworks.com>
In-Reply-To: <4BD0670A.8070205@xpam.de> (message from Adam Nowacki on Thu, 22 Apr 2010 17:11:06 %2B0200)
References:  <201004221441.PAA07296@wratting.cam.lispworks.com> <4BD0670A.8070205@xpam.de>

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>>>>> On Thu, 22 Apr 2010 17:11:06 +0200, Adam Nowacki said:
> 
> My best guess is metadata updates to refer to the 2nd disk. I've seen 
> same behavior when replacing a bad disk in 10 disk raidz2 pool. No data 
> was affected.

I would expect all new writes to automatically go to all disks though, so they
wouldn't be counted as resilvering.

__Martin



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