On Tue, 2009-04-28 at 11:50 -0430, Patrick O'Callaghan wrote:
On Tue, 2009-04-28 at 21:26 +0530, Rahul Sundaram wrote:
> Hi
>
> I have put up a FAQ at
>
>
https://fedoraproject.org/wiki/Ext4_in_Fedora_11
>
> I will be expanding this over time. If you have other unanswered
> questions, do let me know.
OK, here's one. The FAQ says "You can use the Anaconda boot option,
"ext4migrate" to automatically migrate from Ext3 to the new Ext4
filesytem when upgrading from a previous release of Fedora".
What does this mean in practice? Is the end result equivalent to backing
up my ext3 partition and restoring under ext4, or does it simply mount
the ext3 partition as ext4?
It mounts as ext4 *and* enables the 'extents' feature. So the files
written during the upgrade should be using extents - but not everything
on the system gets rewritten. /home, for instance, will be essentially
untouched.
So.. it's a little fancier than just mounting as ext4, but less invasive
and time-consuming than doing a full backup/restore.
-w