[vox-tech] mmap()

[Alex Mandel]

On 10/22/2013 03:45 PM, Norm Matloff wrote:
> Anyone here know much about mmap()?  I have following problem:
> 
> Machines A and B, running Fedora, share files through NFS.  I use mmap()
> to create a file-backed array on A and B, shared via the common file
> system.  I want changes to the array at A to propagate to B and vice
> versa.
> 
> I can't get this to work consistently, even using msync() (synchronous
> or asynchronous).
> 
> This is for general use software, so using a "better" shared file system
> than NFS is not really an option.
> 
> Any ideas?
> 
> Norm Matloff
> 

I'm using glusterFS mounted via a Fuse module. It can be arranged per
mount/disk/node into all sorts of configurations to ensure the amount of
mirroring you want, and supports normal posix persmissions and acl.
I've only tried running it over local networks on the same switch (ie
same rack).

Thank,
Alex