[Pvfs2-users] Confusion in size

[Robert Latham]

On Thu, Feb 05, 2009 at 07:18:49PM -0500, Abhinav Chawade wrote:
> I have a 14 node cluster with 1 storage server 1 head node and 12
> computational node running centos 5.2
> I deployed pvfs2 on all of them and head and storage node are metadata
> servers. Each computational node has 60GB hard drive and the storage server
> has 640 GB storage.
> When i mount the file system and ping it, all servers are running. I try to
> see how much free space is left using df command. df output shows all in all
> 850 GB storage out of which 52% is allocated already. There isn't a single
> file in pvfs2 mounted partition. How can i check size of pvfs2 space i
> created? Is there a way to set limit on storage on each server?

Sounds like you did everything correctly.  You can check the size of
the PVFS volume with df, as you did.  You can also use the
'pvfs2-statfs' utility. 

The smallest amount of space available to one server will determine
how much space is reported in df and statfs. 

You might find this FAQ entry helpful:
http://www.pvfs.org/cvs/pvfs-2-7-branch.build/doc/pvfs2-faq/pvfs2-faq.php#sec:df-free-space
 
==rob

-- 
Rob Latham
Mathematics and Computer Science Division    A215 0178 EA2D B059 8CDF
Argonne National Lab, IL USA                 B29D F333 664A 4280 315B