Nicolas Williams wrote:
On Fri, Feb 02, 2007 at 03:17:17PM -0500, Torrey McMahon wrote:
Nicolas Williams wrote:
But a continuous zfs send/recv would be cool too. In fact, I think ZFS
tightly integrated with SNDR wouldn't be that much different from a
continuous zfs send/recv.
Even better with snapshots, and scoreboarding, and synch vs asynch and
and and and .....
Right. I hadn't thought of that. A replication system that is well
integrated with ZFS should have very similar properties whether designed
as a journalling scheme or as a scoreboarding scheme.
Here's an other thing to think about: ZFS is a COW filesystem. Even if
I'm changing one piece of data over and over, which in the past might be
a set of blocks, I'm going to be writing out new blocks on disk. Many
replication strategies take into account the fact that even through your
data is changing quite a bit the actual block storage level changes are
much smaller.
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