The whole read-only business sounds like baloney to me. Read-only ZFS
implies that the file system would be created elsewhere - and I don't know
if there will be continuing compatibility between
Solaris/Linux(FUSE)/FreeBSD implementations - so they would presumably
support read-only of Solaris' reference implementation. How many people use
Solaris on desktop and want to let their Mac read-only their removable ZFS
drive? Obviously Apple would not bother with such a feature.
I see only 2 logical explanations for nonsense coming from Apple on the
topic, and that is:

- It is not going to be ready for Leopard release, so they are pretending
that they really meant to make it read-only all along, because they can't
stand saying that they failed to get a feature ready.
- Jobs is peeved at Sun's boss and his minions now are struggling to
reconcile the fact that ZFS is showing up in beta, while wanting to pretend
that Sun and ZFS don't exist.

On a related topic, does anyone know if there is built-in iSCSI support in
latest Leopard beta? I saw some Disk Utility screenshots in the past that
had a "Mount iSCSI" menu.

On 6/13/07, Graham Perrin <[EMAIL PROTECTED]> wrote:

Toby Thain wrote:

> What possible use is "read only" ZFS?

A user of an OS that _does_ support read+write ZFS might, for
example, have one spare USB disk/drive.

The user may opt for ZFS for that one disk, gaining the benefits of
COW, rollback etc..

The user will be able to read (only) that disk when he connects it to
a computer running Mac OS X 10.5.
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