On 19/04/2011 23:51, Kenni Lund wrote: > > Den 19/04/2011 19.42 skrev "Matt" <lm7812 at gmail.com > <mailto:lm7812 at 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. -- John Beranek To generalise is to be an idiot. http://redux.org.uk/ -- William Blake -------------- next part -------------- A non-text attachment was scrubbed... Name: smime.p7s Type: application/pkcs7-signature Size: 6010 bytes Desc: S/MIME Cryptographic Signature URL: <http://lists.centos.org/pipermail/centos/attachments/20110420/2a517128/attachment-0005.p7s>