On Wed, Feb 10, 2010 at 05:36:10PM -0600, David Dyer-Bennet wrote: > That's all about *ME* picking the suitable base snapshot, as I understand > it.
Correct. > I understood the recent reference to be suggesting that I didn't have > to, that zfs would figure it out for me. Which still appears to me to be > impossible; the receive node cannot communicate with the sending node Correct. There is, however, a wrinkle: if you have s...@foo s...@bar s...@baz d...@foo d...@bar and you do a send -RI s...@foo s...@baz then you well send both @foo->@bar and @bar->@baz However, the receiver will skip over the @foo->@bar part of the stream, since it already has @bar, and pick up receiving @bar->@baz. This doesn't save you read or network traffic, but does save you write traffic and having to be exactly correct about picking the right base. -- Dan.
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