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Re: [Xen-users] iSCSI and LVM

To: Javier Guerra Giraldez <javier@xxxxxxxxxxx>
From: Jonathan Dye <jdye@xxxxxxxxxxxxxxxxxxxxx>
Date: Wed, 16 Jun 2010 09:18:21 -0600 (MDT)
Cc: xen-users@xxxxxxxxxxxxxxxxxxx, Igor Shalakhin <igor@xxxxxxxxx>
Delivery-date: Thu, 24 Jun 2010 08:40:47 -0700
List-id: Xen user discussion <xen-users.lists.xensource.com>

> unless it is doing them even when there's no snapshot in place.
> 
> -- 
> Javier


in fact that's exactly right.  ZFS is build around copy-on-write semantics.   
snapshot writes are no more expensive than filesystem writes.

- jonathan

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