[CentOS] Convert Filesystem to Ext4
John Beranek
john at redux.org.uk
Wed Apr 20 19:08:49 UTC 2011
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
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