[CentOS] ext4 or XFS

Tue Jan 11 19:12:33 UTC 2011
aurfalien at gmail.com <aurfalien at gmail.com>

On Jan 11, 2011, at 10:59 AM, Joshua Baker-LePain wrote:

> On Tue, 11 Jan 2011 at 1:49pm, Digimer wrote
>> On 01/11/2011 01:47 PM, aurfalien at gmail.com wrote:
>>> Hi all,
>>> I've a 30TB hardware based RAID array.
>>> Wondering what you all thought of using ext4 over XFS.
>>> I've been a big XFS fan for years as I'm an Irix transplant but  
>>> would
>>> like your opinions.
>>> This 30TB drive will be an NFS exported asset for my users housing
>>> home dirs and other frequently accessed files.
>> You will need XFS for a single partition that large. You won't be  
>> able
>> to make such a large ext4 partition, I don't think.
> This is correct.  While ext4 theoretically supports volumes (much)  
> larger
> than 16TB, the developers don't think it's production ready yet and  
> the
> userspace tools don't support it yet.
> So, short answer -- XFS is the only way to go.

My RAID has a strip size of of 32KB and a block size of 512bytes.

I've usually just done blind XFS formats but would like to tune it for  
smaller files.  Of course big/small is relative but in my env, small  
means sub 300MB or so.

What would your XFS tuning params be for such an env?

- aurf