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Date:      Wed, 08 Jul 2009 08:32:12 +1000
From:      Andrew Snow <andrew@modulus.org>
To:        "Mahlon E. Smith" <mahlon@martini.nu>, freebsd-stable@freebsd.org
Subject:   Re: ZFS: drive replacement performance
Message-ID:  <4A53CCEC.7010808@modulus.org>
In-Reply-To: <20090707222631.GA70750@martini.nu>
References:  <20090707195614.GA24326@martini.nu>	<b269bc570907071354r36015689ha362ba83413efc46@mail.gmail.com> <20090707222631.GA70750@martini.nu>

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Mahlon E. Smith wrote:

> Strangely, the ETA is jumping all over the place, from 50 hours to 2000+
> hours.  Never seen the percent complete over 0.01% done, but then it
> goes back to 0.00%.

Are you taking snapshots from crontab?  Older versions of the ZFS code 
re-started scrubbing whenever a snapshot was taken.



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