From: "Daniel P. Berrange" <berrange@redhat.com>
To: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>,
Gary R Hook <grhookatwork@gmail.com>,
qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] Tunneled Migration with Non-Shared Storage
Date: Wed, 19 Nov 2014 10:55:41 +0000 [thread overview]
Message-ID: <20141119105540.GC31875@redhat.com> (raw)
In-Reply-To: <20141119093516.GA2355@work-vm>
On Wed, Nov 19, 2014 at 09:35:16AM +0000, Dr. David Alan Gilbert wrote:
> * Paolo Bonzini (pbonzini@redhat.com) wrote:
> >
> >
> > On 18/11/2014 21:28, Dr. David Alan Gilbert wrote:
> > > This seems odd, since as far as I know the tunneling code is quite separate
> > > to the migration code; I thought the only thing that the migration
> > > code sees different is the file descriptors it gets past.
> > > (Having said that, again I don't know storage stuff, so if this
> > > is a storage special there may be something there...)
> >
> > Tunnelled migration uses the old block-migration.c code. Non-tunnelled
> > migration uses the NBD server and block/mirror.c.
>
> OK, that explains that. Is that because the tunneling code can't
> deal with tunneling the NBD server connection?
Yep, pretty much. The tunnelling code was built around the idea of a
single connection to be tunnelled.
Regards,
Daniel
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next prev parent reply other threads:[~2014-11-19 10:55 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <546B781B.3070309@gmail.com>
2014-11-18 16:51 ` [Qemu-devel] Tunneled Migration with Non-Shared Storage Gary R Hook
2014-11-18 20:28 ` Dr. David Alan Gilbert
2014-11-18 21:38 ` Paolo Bonzini
2014-11-19 9:35 ` Dr. David Alan Gilbert
2014-11-19 10:19 ` Paolo Bonzini
2014-11-19 10:55 ` Daniel P. Berrange [this message]
2014-11-19 20:00 ` Gary R Hook
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