[Pvfs2-users] Re: aviod to rebuild pvfs io node

[Rob Latham]

On Wed, May 20, 2009 at 05:14:33PM +0800, Jimmy Cheung (ITSC) wrote:
> When system of pvfs2 IO + compute node is hanged, the pvfs2 IO + compute
> node will be re-installed automatically when reboot.  Do I loose all the
> data that was stored on it?  Is there a way to ensure this doesn't
> happen?

Hi.  I'm re-directing the conversation to the correct list. 

Maybe I misunderstand what you are saying, but it sounds like your
nodes re-image themselves every time they reboot.   If they 100% start
from a clean slate, including wiping the PVFS storage space, then
yeah, you'll lose data.

One way to avoid this is to adjust your re-imaging process to leave
certain partitions or file systems alone.  You could re-image the /
partition, but keep a separate /pvfs2-data partition, for example,
which you would never wipe on re-imaging.

==rob

-- 
Rob Latham
Mathematics and Computer Science Division
Argonne National Lab, IL USA