On 19/04/2011 23:51, Kenni Lund wrote:
Den 19/04/2011 19.42 skrev "Matt" <lm7812@gmail.com mailto:lm7812@gmail.com>:
On a running 64 bit CentOS 5.6 box is it possible to convert from Ext3 to Ext4 to improve performance?
This is entirely from memory, so it might be incorrect and not relevant anymore: When ext4 got released, it was possible to upgrade ext3 to ext4, but while you would gain some ext4 features and minor performance improvements, the only way to get native ext4 performance, was to delete and recreate the partition.
That's not quite true, you can force files on a partition to be re-created using extents with something like the below:
find /home -xdev -type f -print0 | xargs -0 chattr +e find /home -xdev -type d -print0 | xargs -0 chattr +e
Cheers,
John.