Can anyone on-list answer two related ZFS questions? 1) block checksum data in 'sent' snapshots
One of the attractive features of ZFS is that it offers a form of "error correction". My understanding is that what ZFS does actually is checksum its blocks and upon noticing that one has gone bad, checks for a copy *somewhere*, where *somewhere* is documented as a RAID mirror. I'm considering using ZFS for SSD elements of a home network, for which I don't see justification for setting up an NFS or RAID mirror array. Is there an alternative technique to benefit from ZFS error correction? The idea that occurs to me is to perform periodic backups using ZFS send and then to immediately copy the 'sent' snapshots to different media. My thought here is that if the 'sent' data includes the block checksums, then should I ever need to perform a restore and be confronted by a bad block, I could mount the copy as a mirror and have ZFS perform the correction. Is such the case? Is this possible? Is there a 'better' technique? 2) native encryption of 'sent' snapshots For a ZFS pool with native encryption, are its 'sent' data also natively encrypted? If not, are there any known problems or issues related to piping 'sent' data through gpg or other encryptor? -- hkp://keys.gnupg.net CA45 09B5 5351 7C11 A9D1 7286 0036 9E45 1595 8BC0 _______________________________________________ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il
