[nycbug-talk] large scale zfs backup howto

[Miles Nordin]

>>>>> "mg" == Max Gribov <max at neuropunks.org> writes:

    mg> http://forums.freebsd.org/showthread.php?t=3689

very nice.

btw among many details I see he has used --inplace.  --inplace is
important for rsync/ZFS when the destination is a snapshotted ZFS and
the files being backed up are large ones that change in the middle
like .vmdk/.vdi/.db.  By defauly rsync sends only changes over the
wire, but when it WRITES the destination it does the copy/fsync/rename
dance which will use more space in the ZFS snapshot/clone tree than
--inplace.  for the restore onto ext3/ufs --inplace should make no
difference.
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