[OpenAFS] Maximum volume size (again)

Jeffrey Hutzelman jhutz@cmu.edu
Tue, 16 May 2006 14:15:31 -0400

On Tuesday, May 16, 2006 02:06:22 PM -0400 Derrick J Brashear 
<shadow@dementia.org> wrote:

> On Tue, 16 May 2006, John W. Sopko Jr. wrote:
>> Just had a user that wants a volume greater then 8GB. We have
>> always gone by the recommendation of 8GB maximum volumes.
>> I do not particularly want to manage volumes larger then
>> 8GB but need and official answer to give to this person.
>> I searched the openafs-devel|info mail archives and did not
>> see much info on this topic. Is the recommendation still
>> 8GB for OpenAFS 1.4.1? Are there any notes on maximum volume
>> and file sizes? Thanks for the info.
> I think quota overruns at 2TB, but the volume will still work.
> You'll be sad if you ever need to move it unless you have fast stuff all
> around.

You'll be sad because big volumes take a long time to move.
You'll be more sad if the volume consists of a very large number of small 
files, rather than a few large files.  If it's going to be lots of little 
files, you should encourage the user to structure his data so that multiple 
volumes can be used.

Also, you life will become annoying whenever you have volumes which are a 
substantial fraction of the typical vice partition size, because finding 
places to move them to will be harder.

That said, our current policy allows quotas several times that size, 
depending on the situation.  Our typical partitions are several hundred GB.

-- Jeff