Re: [Qemu-devel] [PATCH v2 5/5] block/rbd: add support for 'mon_host', 'auth_supported' via QAPI

["Daniel P. Berrange" <berrange@redhat.com>]

On Mon, Feb 27, 2017 at 10:57:44PM -0500, Jeff Cody wrote:
> On Mon, Feb 27, 2017 at 04:47:54PM -0600, Eric Blake wrote:
> > On 02/27/2017 12:58 PM, Jeff Cody wrote:
> > > @@ -604,6 +620,29 @@ static int qemu_rbd_open(BlockDriverState *bs, QDict *options, int flags,
> > >          goto failed_shutdown;
> > >      }
> > >  
> > > +    /* if mon_host was specified */
> > > +    if (host) {
> > > +        const char *hostname = host;
> > > +        char *mon_host = NULL;
> > > +
> > > +        if (port) {
> > > +            mon_host = g_strdup_printf("%s:%s", host, port);
> > 
> > Does Ceph care about IPv6 (in which case you may need [host]:port when
> > host itself includes ':')?
> >
> 
> Some quick sanity testing seems to show that it does not need [] for ipv6
> addresses, which is nice.

Hmm, that is very odd to me, as that means parsing is ambiguous. The
ceph 'mon_host' option allows the port to be omitted, so given a
string  2001:242:24:23   there's no way of knowing whether it is
a IPv6 addr 2001:242:24:23, with no port, or an addr 2001:242:24 with
port of 23


Regards,
Daniel
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