Hello Jeff,

Monday, December 17, 2007, 10:42:18 AM, you wrote:

JB> In short, yes.  The enabling technology for all of this is something
JB> we call bp rewrite -- that is, the ability to rewrite an existing
JB> block pointer (bp) to a new location.  Since ZFS is COW, this would
JB> be trivial in the absence of snapshots -- just touch all the data.
JB> But because a block may appear in many snapshots, there's more to it.
JB> It's not impossible, just a bit tricky... and we're working on it.

JB> Once we have bp rewrite, many cool features will become available as
JB> trivial applications of it: on-line defrag, restripe, recompress, etc.



Cool.
Do you have some estimates on time frames? Last time it was said to be
late this year...

-- 
Best regards,
 Robert Milkowski                            mailto:[EMAIL PROTECTED]
                                       http://milek.blogspot.com

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