On Thu, 2012-08-09 at 10:36 +0800, Peng Tao wrote:
> On Thu, Aug 9, 2012 at 3:03 AM, Myklebust, Trond
> <Trond.Myklebust@xxxxxxxxxx> wrote:
> > On Wed, 2012-08-08 at 09:49 +0800, Peng Tao wrote:
> >> pnfs_within_mdsthreshold() is called inside pg_init. We need
> >> to set read_io/write_io before that.
> >
> > Why?
> If we don't set read_io/write_io before calling pg_init, we fail
> pnfs_within_mdsthreshold() and IO goes to MDS.
> A simple test case:
> dd if=foo of=/mnt/pnfs/bar bs=10M count=1 oflag=direct
>
My point was that this explanation needs to go into the changelog of the
commit.
--
Trond Myklebust
Linux NFS client maintainer
NetApp
Trond.Myklebust@xxxxxxxxxx
www.netapp.com
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