From: "Richard W.M. Jones" <rjones@redhat.com>
To: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Cc: Eric Blake <eblake@redhat.com>,
"qemu-devel@nongnu.org" <qemu-devel@nongnu.org>,
"qemu-block@nongnu.org" <qemu-block@nongnu.org>,
"pbonzini@redhat.com" <pbonzini@redhat.com>,
"mreitz@redhat.com" <mreitz@redhat.com>,
"kwolf@redhat.com" <kwolf@redhat.com>,
Denis Lunev <den@virtuozzo.com>,
"berrange@redhat.com" <berrange@redhat.com>
Subject: Re: [Qemu-devel] [PATCH 0/2] nbd server: drop old-style negotiation
Date: Thu, 4 Oct 2018 13:22:12 +0100 [thread overview]
Message-ID: <20181004122212.GE27120@redhat.com> (raw)
In-Reply-To: <79d591fa-d839-d5ba-c3e8-6c33ce4ecc0d@virtuozzo.com>
On Thu, Oct 04, 2018 at 12:10:17PM +0000, Vladimir Sementsov-Ogievskiy wrote:
> this is a bit more difficult and more overhead than option in Qemu.. But
> I don't sure we should care about
I think Eric's point is that dropping oldstyle in qemu-nbd isn't
really a problem because nbdkit has no plans to drop oldstyle. So
there will remain a path for very old clients to keep working (whether
using nbdkit natively, or using nbdkit to proxy to qemu-nbd). Eric's
example used the more complex proxy case. By contrast the nbdkit
native case is very simple:
nbdkit -o file disk.img
(where the ‘-o’ flag switches to oldstyle protocol).
Rich.
--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
virt-df lists disk usage of guests without needing to install any
software inside the virtual machine. Supports Linux and Windows.
http://people.redhat.com/~rjones/virt-df/
next prev parent reply other threads:[~2018-10-04 12:31 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-03 17:02 [Qemu-devel] [PATCH 0/2] nbd server: drop old-style negotiation Vladimir Sementsov-Ogievskiy
2018-10-03 17:02 ` [Qemu-devel] [PATCH 1/2] qemu-nbd: " Vladimir Sementsov-Ogievskiy
2018-10-03 17:31 ` Eric Blake
2018-10-03 17:02 ` [Qemu-devel] [PATCH 2/2] nbd/server: " Vladimir Sementsov-Ogievskiy
2018-10-03 17:35 ` Eric Blake
2018-10-03 17:32 ` [Qemu-devel] [PATCH 0/2] nbd server: " Eric Blake
2018-10-03 17:59 ` Vladimir Sementsov-Ogievskiy
2018-10-03 18:08 ` Eric Blake
2018-10-03 20:30 ` Richard W.M. Jones
2018-10-04 12:10 ` Vladimir Sementsov-Ogievskiy
2018-10-04 12:22 ` Richard W.M. Jones [this message]
2018-10-03 20:44 ` Eric Blake
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