ZFS (also ext3 snapshots)

[Ben Scott]

On 4/20/07, Michael ODonnell <michael.odonnell at comcast.net> wrote:
> Further adventures of ZFS, GPL and friends:
>    http://kerneltrap.org/node/8066

  Oh, goodie, and a license flamewar going on in the comments.  So
productive.  :-/

> Also, did I hear somebody at last night's meeting refer to
> (what sounded like) an "ext3 snapshot" capability?

  I heard that, too.

> is that anything beyond copying the raw bits of an active
> ext3 filesystem

  At the time, I assumed they meant LVM snapshots, which is a little
bit beyond that.  LVM implements COW (copy-on-write) functionality.
However, the filesystem doesn't really know about that, so you're not
far off.

 However, a Google for "ext3 snapshot" yielded some interesting
looking results, including this:

http://www.ext3cow.com/

  Anyone here played with the above?

-- Ben