3 ms·
> I don't know why turning off CoW on BTRFS disables checksumming Because in-place updates means you need to journal data writes, otherwise you'll get checksum
by blattimwind 9y ago
> I don't know why turning off CoW on BTRFS disables checksumming
Because in-place updates means you need to journal data writes, otherwise you'll get checksum errors for aborted writes. (Which classic file systems don't catch)
The recent (~5 years old) batch of block-deduplicating backup tools (attic, bup, borg, restic etc.) would fit the bill to some extent, but all of them were/are more bug-laden than the file systems discussed so far.