From: Juan Quintela <quintela@redhat.com>
To: Peter Xu <peterx@redhat.com>
Cc: qemu-devel@nongnu.org, Laurent Vivier <lvivier@redhat.com>,
"Daniel P . Berrange" <berrange@redhat.com>,
"Dr . David Alan Gilbert" <dgilbert@redhat.com>
Subject: Re: [Qemu-devel] [PATCH] migration: add "return-path" capability
Date: Wed, 28 Jun 2017 09:36:02 +0200 [thread overview]
Message-ID: <87vang7ee5.fsf@secure.mitica> (raw)
In-Reply-To: <1498472935-14461-1-git-send-email-peterx@redhat.com> (Peter Xu's message of "Mon, 26 Jun 2017 18:28:55 +0800")
Peter Xu <peterx@redhat.com> wrote:
> When this capability is enabled, QEMU will use the return path even for
> precopy migration. This is helpful at least in one case when destination
> failed to load the image while source quited without confirmation. With
> return path, source will wait for the last response from destination,
> and if destination fails, it'll fail the migration on source, then the
> guest can be run again on the source (rather than assuming to be good,
> then the guest will be lost after source quits).
>
> It needs to be enabled explicitly on source, otherwise disabled.
>
> Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
next prev parent reply other threads:[~2017-06-28 7:36 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-26 10:28 [Qemu-devel] [PATCH] migration: add "return-path" capability Peter Xu
2017-06-28 7:36 ` Juan Quintela [this message]
2017-06-28 9:25 ` Dr. David Alan Gilbert
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