Hi,

Simon is correct.  A byte-range locking implementation for OpenAFS is being 
funded by Your File System, Inc., under its DOE SBIR Phase II grant.  As stated 
elsewhere by Jeff, there are (or will be) structures for making completed 
available to the community during the course of the work.

However, my understanding that shared r/w access to sqlite through AFS probably 
does work, provided you ensure sqlite uses the correct locking style (cf. 
sqlite's os_unix.c):

#define SQLITE_WHOLE_FILE_LOCKING  0x0001   /* Use whole-file locking */

This feature is apparently due to Adam Megacz, who posted briefly about it in 
2006.  See http://marc.info/?l=sqlite-users&m=116742195016159&w=2 .

Regards,

Matt

----- "Simon Wilkinson" <[email protected]> wrote:

> On 8 Apr 2010, at 12:22, Todd Lewis wrote:
> 

> 
> Someone (Matt, IIRC) was working on server support for byte range  
> locking, but I don't think we've seen any code yet.
> 
> Cheers,
> 
> Simon.

-- 

Matt Benjamin

The Linux Box
206 South Fifth Ave. Suite 150
Ann Arbor, MI  48104

http://linuxbox.com

tel. 734-761-4689
fax. 734-769-8938
cel. 734-216-5309
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