Re: [Qemu-devel] [PATCH v6 2/2] block: Support GlusterFS as a QEMU block backend

[Paolo Bonzini <pbonzini@redhat.com>]

Il 06/09/2012 17:40, Bharata B Rao ha scritto:
> > > > I don't think we can fit 'unix' within the standard URI scheme (RFC 3986)
> > > > easily, but I am planning to specify the 'unix' transport as below:
> > > > 
> > > > gluster://[/path/to/unix/domain/socket]/volname/image?transport=unix
> > > > 
> > > > i,e., I am asking the user to put the unix domain socket path within
> > > > square brackets when transport type is unix.
> > > 
> > > Never saw something like this before, but it does seem reasonable to me.
> > > Excludes ] from the valid characters in the file name of the socket, but
> > > that shouldn't be a problem in practice.
> > 
> > Bikeshedding, but I prefer
> > 
> >   gluster:///path/to/unix/domain/socket:/volname/image?transport=unix
> 
> Unless you or others strongly feel about this, I would like to go with
> [ ] based spec, which I feel is less prone to errors like missing a colon
> by mistake :)

Your proposed spec has the disadvantage of not being a proper URL.

What about this instead:

gluster:///path/to/unix/domain/socket!/volname/image?transport=unix

since (http://www.w3.org/Addressing/URL/uri-spec.html) "The asterisk
("*", ASCII 2A hex) and exclamation mark ("!" , ASCII 21 hex) are
reserved for use as having special signifiance within specific schemes".

Paolo