Time Machine & ZFS

I've just installed Leopard on my MacBook Pro, and was first disapointed that it only had read only zfs, but after checking out ADC that was solved :)

I also wanted to try out Time Machine and thought that I could place the backups on zfs, but Time Machine doesn't let me select zfs as a destination. Hopefully I'll be able to trick it somehow ;)

Update:
after Jeff Harrell's comment I read up on Time Machine here and here, and as Jess says it uses directory hard-links, so that won't work with zfs. Bummer! :(

Comments:

Time Machine saves time and disk space by creating hard links to directories. If I remember correctly, ZFS does not support directory hard-links, only file hard-links, like most filesystems. So it won't be possible to make Time Machine work with ZFS.

Posted by Jeff Harrell on October 29, 2007 at 08:41 AM PDT #

So hopefully Apple will develop support for directory hard-links and feed it back to us...

Posted by Ché Kristo on October 29, 2007 at 12:00 PM PDT #

Hey just use Solaris Martin! With ZFS and a bit of basic scripting, you can take periodic snapshots and perform backups whenever a USB disk is inserted. Now just add some Compiz eye candy, and we're done :-)

More at:
http://blogs.sun.com/timf/entry/zfs_automatic_snapshots_0_8
http://blogs.sun.com/timf/entry/zfs_automatic_backup_0_1

I've new versions of each in the works, out soon, which adds a simple GUI to do configuration and packages things up a bit more conveniently too.

Posted by Tim Foster on October 29, 2007 at 04:56 PM PDT #

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