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Date:      Wed, 8 Aug 2012 11:27:51 -0400
From:      "Brian Gold" <bgold@simons-rock.edu>
To:        <freebsd-fs@freebsd.org>
Subject:   undoing zfs deduplication
Message-ID:  <0c8801cd757a$601018e0$20304aa0$@simons-rock.edu>

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I've got a system running 9.0-release w/ a zfs v28 pool. Within that pool I have 3 datasets, two of which have deduplication
enabled. I've recently been having a lot of performance issues with deduplication and have determined that I need far more ram that
I currently have in order to support dedupe. I don't have the budget for the ram necessary so I would like to move away from
deduplication. I'm aware  that you can't simply turn dedupe off, you need to completely nuke the filesystem. 

What I'm wondering is, would it be possible for me to create new datasets within the same pool (I have a ton of available space) and
use a combination of "zfs send" & "zfs receive" to migrate my deduped datasets and all of their snapshots (daily, weekly, & monthly)
over to the new dataset? 

Brian Gold
System Administrator
Bard College at Simon's Rock






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