Wout Mertens writes:
> FWIW, btrfs and ZFS also do non destructive writes, they're Copy on Write.
>
> As a bonus you get unlimited instant snapshots and lots of other wonderful
> things.
>
> I prefer btrfs as it has more of a desktop focus and feature set as well as
> being in the kernel, but ZFS is more mature.
I shall probably go back to using btrfs.
One nice property of NILFS is that every write results in a new checkpoint,
which makes it very cheap to check whether a filesystem has been modified
(other than via low-level disk-editing).
Tim
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