* pNFS layered over cluster FS, is this the status quo?
@ 2013-04-21 8:13 linux.pnfs
2013-04-23 21:14 ` J. Bruce Fields
0 siblings, 1 reply; 2+ messages in thread
From: linux.pnfs @ 2013-04-21 8:13 UTC (permalink / raw)
To: linux-nfs
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!
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: pNFS layered over cluster FS, is this the status quo?
2013-04-21 8:13 pNFS layered over cluster FS, is this the status quo? linux.pnfs
@ 2013-04-23 21:14 ` J. Bruce Fields
0 siblings, 0 replies; 2+ messages in thread
From: J. Bruce Fields @ 2013-04-23 21:14 UTC (permalink / raw)
To: linux.pnfs; +Cc: linux-nfs
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.
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