On 19/04/2011 23:51, Kenni Lund wrote: > > Den 19/04/2011 19.42 skrev "Matt" <lm7812@xxxxxxxxx > <mailto:lm7812@xxxxxxxxx>>: >> >> 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. -- John Beranek To generalise is to be an idiot. http://redux.org.uk/ -- William Blake
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