On Wed, Sep 07, 2011 at 08:47:36AM -0600, Lori Alt wrote: > On 09/ 6/11 11:45 PM, Daniel Carosone wrote: >> My understanding was that 'zfs send -D' would use the pool's DDT in >> building its own, if present. > It does not use the pool's DDT, but it does use the SHA-256 checksums > that have already been calculated for on-disk dedup, thus speeding the > generation of the send stream.
Ah, thanks for the clarification. Presumably the same is true if the pool is using checksum=sha256, without dedup? Still a moot point for now :) -- Dan.
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