Hi, Benny, -----Original Message----- From: linux-nfs-owner@xxxxxxxxxxxxxxx [mailto:linux-nfs-owner@xxxxxxxxxxxxxxx] On Behalf Of Benny Halevy Sent: Friday, June 10, 2011 5:23 AM To: Jim Rees Cc: Peng Tao; linux-nfs@xxxxxxxxxxxxxxx; peter honeyman Subject: Re: [PATCH 87/88] Add configurable prefetch size for layoutget On 2011-06-09 06:58, Jim Rees wrote: > Benny Halevy wrote: > > > My understanding is that layoutget specifies a min and max, and the server > > There's a min. What do you consider the max? > Whatever gets into csa_fore_chan_attrs.ca_maxresponsesize? > > The spec doesn't say max, it says "desired." I guess I assumed the server > wouldn't normally return more than desired. No, the server may freely upgrade the returned layout segment by returning a layout for a larger byte range or even returning a RW layout where a READ layout was asked for. [PT] It is true that server can upgrade the layout segment freely. But there is always a price to pay. Server has to be dealing with all kind of clients. If server returns more than being asked for, it may hurt other clients. -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
