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Hello all. I am looking to be able to verify my zfs backups in the
most minimal way, ie without having to md5 the whole volume.
Is there a way to get a checksum for a snapshot and compare it to
another zfs volume, containing all the same blocks and verify they
contain the same information? Even when I destroy the snapshot on the
source?
kind of like:
zfs create tank/myfs
dd if=/dev/urandom bs=128k count=1000 of=/tank/myfs/TESTFILE
zfs snapshot tank/myfs@snapA
zfs send tank/myfs@snapA | zfs recv tank/myfs_BACKUP
zfs destroy tank/myfs@snapA
zfs snapshot tank/myfs@snapB
someCheckSumVodooFunc(tank/myfs)
someCheckSumVodooFunc(tank/myfs_BACKUP)
is there some zdb hackery which results in a metadata checksum usable
in this scenario?
Thank you all!
Asa
zfs worshiper
Berkeley, CA
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