Re: NFSv4/pNFS possible POSIX I/O API standards

[Christoph Hellwig <hch@infradead.org>]

What crack do you guys have been smoking?

On Mon, Nov 27, 2006 at 09:34:05PM -0700, Gary Grider wrote:
> 
> >
> >NFS developers, a group of people from the High End Computing 
> >Interagency Working Group File
> >Systems and I/O (HECIWG FSIO), which is a funding oversight group 
> >for file systems and
> >storage government funded research, has formed a project to extend 
> >the POSIX I/O API.
> >The extensions have mostly to do with distributed computing/cluster 
> >computing/high end computing
> >extensions.
> >
> >Things like
> >openg()  - on process opens a file and gets a key that is passed to 
> >lots of processes which
> >use the key to get a handle (great for thousands of processes opening a 
> >file)
> >readx/writex - scattergather readwrite - more appropriate and 
> >complete than the real time extended read/write
> >statlite() - asking for stat info without requiring completely 
> >accurate info like dates and sizes.  This is good
> >for running stat against a file that is open by hundreds of 
> >processes which currently forces callbacks
> >and the hundreds of processes to flush.
> >
> >Some of these things might be useful for pNFS and NFSv4.
> >
> >etc.
> >
> >In talking to Andy Adamson, we realized that NFS ACL's are a good 
> >candidate for POSIX standardization.
> >There may be other items that might be good for standardization as well.
> >
> >The HECIWG FSIO POSIX team has already gotten the wheels rolling and 
> >has gotten agreement
> >to do the standardization effort within the OpenGroup.  We have an 
> >official project in the platform
> >group in the OpenGroup and will publish man pages for review and 
> >possible standardization
> >as an extension to POSIX.
> >The website is at
> >http://www.opengroup.org/platform/hecewg/
> >
> >There are man pages for most of the proposed extensions at that 
> >site.  We will be putting more
> >out there in a few weeks.
> >
> >We in the HECIWG would welcome putting forth any NFS related 
> >calls/utilities in our POSIX
> >extension effort.
> >We would need someone to work with in the NFS community to give us 
> >the man pages
> >and point at example implementations.
> >We would be happy to do the legwork of getting the documents done 
> >and the like.
> >
> >I also would be happy to add any of you to the POSIX HEC Extensions 
> >mailing list etc.
> >if you want to monitor this effort.
> >
> >Andy and I felt that since we have the official POSIX Extensions 
> >project spun up, getting a few things
> >from the NFSv4/pNFS community into the POSIX Standard would be nice 
> >way to get leverage.
> >
> >I am very interested in your thoughts.
> >Thanks
> >Gary Grider
> >Los Alamos National Lab
> >HECIWG
> 
> 
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