[Ocfs2-users] ocfs2 vs ext3?
Andrew (Anything)
anything at starstrike.net
Wed Apr 29 00:24:11 PDT 2009
>
> Hi Andrew,
> I just checked max-features, it doesn't include "local" which means
> that you still need to create dlm lock in your local node which will
> cost some delay. You can check whether your volume enable "local" by
> command
>
> echo 'stats'|debugfs.ocfs2 /dev/sdX|grep "Incompat"
>
> If the volume is mkfsed to used as local disk, you should see "local".
> Otherwise you need to add "--fs-features=local" to your mkfs.
>
> Regards,
> Tao
Thanks for your replies Tao and Thomas
I still intend on using the filesystem in a 3 node cluster, but when I found
it to be 25x slower than a single ext3 part I thought id start
troubleshooting at the start.
I just did a format of a small partition to give it a quick test anyway, and
found that it performs just as well as ext3, in some test even better.
Except if I understand correctly, local disables the ability for clustering
completely?
>
> Dear Andrew,
>
> I think the result should be normal because ocfs2 is a cluster fs ?
>
Hi Thomas,
on a single node system (with no network latency, and only itself to talk
to) I had expected better results.
is a 10x reduction in file creation/modification an expected result?
Andy..
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