[Linux-cluster] gfs perfomance tuning

[Gordan Bobic]

On Tue, 9 Oct 2007, Rob Nevins wrote:

> Gordan Bobic wrote:
>>  You may find that mounting the gfs file system with "noatime" option helps
>>  a bit.
>
> I like the idea of adding in noatime to our gfs share, but with three nodes 
> running, what would be the proper way to add in "noatime" to fstab, unmount 
> and remount.  Can it be one node at a time?  Or, should I unmount the gfs 
> from all nodes, update and remount?

I can't see why it couldn't be done at run-time.

mount -o noatime,remount /my/gfs/path

on each node in turn. Worst that'll happen is that it'll tell you it won't 
do it.

Failing that, changing defaults to defaults,noatime in /etc/fstab will do 
it when you reboot the cluster.

Gordan