[Ocfs2-users] Recommended settings for mkfs.ocfs2

[Andrew Robert Nicols]

Hi Brian,

Thank you for taking the time to reply.

On Mon, Apr 19, 2010 at 08:53:47AM -0500, Brian Kroth wrote:
> lenny-backports has a 2.6.32 based kernel that might already have the
> free space fix in it.  I haven't checked yet.

From what I can tell, the ENOSPC issue isn't fixed until 2.6.33
(http://oss.oracle.com/bugzilla/show_bug.cgi?id=1189#c25) so the version in
backports (or even Squeeze) isn't much help yet I'm afraid.

> Also you don't really explain what you're trying to use the data store
> for (eg: lots of small files, video files, heavy writes, heavy reads,
> random, sequential, etc.).  It may impact the options you want to give
> to mkfs.

Sorry - that didn't occur to me. This is going to be a file store for a
variety of user submitted data for a web application (Moodle). At present
we have a variety of:
* videos
* audio
* images
* database backups (gunzipped tar)
* large files (primarily zip)
* small files

The activity is primarily read with writes too but I'm not sure on the
exact characteristics at present. I'd guess fairly random rather than
sequential and there are periods with heavy writes.

Files are served to 6 frontend web servers over NFS for serving with
Apache2. We've currently got 2.2TB of space used.

Thank you for your input - if there's anything else which would be useful,
I'll see if I can provide it.

Andrew

-- 
Systems Developer

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