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Why do you do this manual checksumming thing instead of e.g. setting up a ZFS mirror once every n years?
by centimeter 6y ago
Why do you do this manual checksumming thing instead of e.g. setting up a ZFS mirror once every n years?
- chrisseaton 6y agoBecause simple and manually inspectable is better for backups.
- centimeter 6y agoWhat do you do if you find a checksum error? ZFS mirror will fix it for you.
- chrisseaton 6y agoWhat do you think I do? Copy from the last good copy.
- dragontamer 6y agoZFS does that, except with error correction codes applied against bitrot. All you gotta do is turn on a ZFS-system and hit the "scrub" command. That automatically checks all checksums: and error-corrects all data that fails a checksum. If anything, ZFS makes that whole system you just described easier and more automatic. Its not really hard for me to push the "scrub" button on my Nas4Free box every few months.
- pishpash 6y agoWhat do you do with errors within the latest increment? A shelf of annual HDD's doesn't sound too bad otherwise.