Hi. Currently zfs send has -D flag, which allows to deduplicate blocks in single stream.
I'm wondering if it would be possible not to send blocks in incremental stream if we know they are part of the given dataset already and were sent to the remote site with some earlier snapshots. I know deduplication is pool-wide mechanism and the block might be part of many different datasets. In my case I'd need to know that the block I'm about to send is part of this particular dataset. With the current ZFS design, is something like this even possible to implement in some clean way or would there be a need for heavy modifcations of ZFS internals? If it is doable, could you suggest a good starting point? -- Pawel Jakub Dawidek http://www.wheelsystems.com [email protected] http://www.FreeBSD.org FreeBSD committer Am I Evil? Yes, I Am!
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