pNFS layered over cluster FS(such as GFS2), DLM implement layoutget(a pnfs export operations) but it not support IOMODE_RW, that is write data must via meta data server, -->> is this the status quo?
the MDS' layoutget will support IOMODE_RW and client will RW data via data server in the future?
or is there any support for: howto parellel R&W data via data server?
thanks!
On Sun, Apr 21, 2013 at 04:13:27PM +0800, linux.pnfs wrote:
> pNFS layered over cluster FS(such as GFS2), DLM implement layoutget(a pnfs export operations) but it not support IOMODE_RW, that is write data must via meta data server, -->> is this the status quo?
>
> the MDS' layoutget will support IOMODE_RW and client will RW data via data server in the future?
> or is there any support for: howto parellel R&W data via data server?
This is up to the implementation.
The linux gfs2 pnfs patches implement a very simple prototype.
--b.