Re: Linux kernel 3.18+ blocklayout driver support only 4k pNFS block size

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On Wed, Apr 01, 2015 at 04:21:31PM +0000, G?l, Bal?zs wrote:
> > There is no concept of a max pNFS file size.  Do you mean a maximum layout size?  There is no real delibrate limit.
> 
> This is the maximum file size, what can be handled by the block layout driver, because of the maximum layout size limit (at least with EMC).

So it's a server side limitation.  That also explains why no EMC user
ever saw the instant crash with > 2TB volumes in the old driver..

> Our pNFS story started at EMC in 01/22/2015, we are still waiting for a patch. Currently we will not use pNFS, because seems it's not production ready.

The NFS client driver has been in a very bad shape when I started
testing it against my new server, including crashed, lockups and lots of
data corruption.  This is why I ended up rewriting it entirely for Linux
3.18.  I would not recommend to use the older one at all.
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