[zfs-discuss] [RFC] Improved versioned pointer algorithms

Akhilesh Mritunjai
Mon, 14 Jul 2008 15:29:47 -0000

Still reading, but would like to correct one point.

> * It would seem that ZFS is deeply wedded to the
> concept of a single,
> linear chain of snapshots.  No snapshots of
> snapshots, apparently.
>    http://blogs.sun.com/ahrens/entry/is_it_magic

Writable snapshots are called "clones" in zfs. So infact, you have
trees of snapshots and clones. Snapshots are read-only, and you can create any
number of "writable" clones from a snapshot, that behave like a normal
filesystem and you can again take snapshots of the clones.


This message posted from opensolaris.org