Re: [Xen-devel] sharing file between running domU (windowxp) and dom0

[Pradeep Singh <rautelap@xxxxxxxxx>]

On Fri, 7 Dec 2007 17:41:32 +0000
Mark Williamson <mark.williamson@xxxxxxxxxxxx> wrote:

> Hi there,
Hello Mark,
> 
[snip]
> > Mark,I guess i understood your point here.
> > My question is what about cluster filesystems like GFS or OCFS2.
> 
[...]
> 
> Most other filesystems have no concept of writes happening "behind
> their back" so they can't be used in this way.  In additon to what I
> said earlier, please note that it's not just having multiple writers
> to an FS that's dangerous. Even if you have the disk mounted
> read-only in one domain when you write to it in another, you're
> liable to cause that domain to read corrupted data and possibly crash.
[...]
> > FWIW how is XenFS different from OCFS2 and GFS?
> 
> XenFS is more like a network filesystem than a disk filesystem.  The
> data is stored by a "normal" filesystem and XenFS exports that
> filesystem.  The difference from a network filesystem is that it uses
> shared memory instead of IP.
XenFS looks like an interesting prospect.Shared memory instead of
network perhaps will mean better speed.Any repository where i can have
a look at its source?Can i employ it on my Xen machine or is it still
under development?

Thanks for explaining things lucidly and for your patience.

Cheers,
        Pradeep
[...]

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