Re: [PATCH] s390: Hypervisor File System

[Michael Holzheu]

mschwid2@xxxxxxxxxxxxxxxxxxxxxxx wrote on 05/03/2006 04:58:06 PM:
> On Wed, 2006-05-03 at 16:23 +0200, Michael Holzheu wrote:
> > mschwid2@xxxxxxxxxxxxxxxxxxxxxxx wrote on 05/03/2006 04:17:40 PM:
> > > And the user space then uses the parser only? Is now the parser
> > > interface the "ABI" or the kernel interface that is in turn used by
the
> > > parser? And what happens if somebody comes up with a "better" parser
> > > that does things subtly different?
> >
> > The ABI is not defined by the Parser. You have to specify the
> > tag language, which is part of the ABI. Any parser, which is comliant
> > to the specification of the tag language can be used.
>
> Optimist.

One very last comment: I think for our problem to
ensure consitency of hypervisor data, when an application
always wants to get the complete set of information,
the "one file" solution with a fully specified ASCII
tag language format looks for me to be the easiest way
to implement our solution. And I think, if one decides to
use one file to provide all the information, it is better to
have a standard data format than always invent new
formats. And to use a standard ASCII format is
in my eyes also better than to have a binary interface.

If everybody says, that it is in principal not a good idea
to use one file, than a snapshot mechanism
for filesystems is probably go good method to provide
consitency. And this is definitely not my decission...

Michael

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