From: Paolo Bonzini <pbonzini@redhat.com>
To: Peter Lieven <pl@dlhnet.de>
Cc: "qemu-devel@nongnu.org" <qemu-devel@nongnu.org>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>
Subject: Re: [Qemu-devel] Block Migration and xbzrle
Date: Tue, 02 Oct 2012 11:38:57 +0200 [thread overview]
Message-ID: <506AB631.8090206@redhat.com> (raw)
In-Reply-To: <5055AC78.8040606@dlhnet.de>
Il 16/09/2012 12:39, Peter Lieven ha scritto:
>
> I remember that this was broken some time ago and currently with
> qemu-kvm 1.2.0 I am still not able to use
> block migration plus xbzrle. The migration fails if both are used
> together. XBZRLE without block migration works.
>
> Can someone please advise what is the current expected behaviour?
Block migration is broken by design. It will converge really slowly as
soon as you have real load in the VMs, and it will hamper the
convergence of RAM as well.
Hopefully a real alternative will be in 1.3 (based on drive-mirror on
the source + an embedded NBD server running on the destination), then in
1.4 we can reimplement the block migration monitor commands using the
alternative.
Paolo
next prev parent reply other threads:[~2012-10-02 9:39 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-16 10:39 [Qemu-devel] Block Migration and xbzrle Peter Lieven
2012-09-17 18:03 ` Orit Wasserman
2012-10-02 8:33 ` lieven-lists
2012-10-02 9:28 ` Orit Wasserman
2012-10-02 9:30 ` Peter Lieven
2012-10-02 10:40 ` Orit Wasserman
2012-10-04 6:31 ` Peter Lieven
2012-10-02 9:38 ` Paolo Bonzini [this message]
2012-10-02 9:44 ` Peter Lieven
2012-10-02 10:09 ` Paolo Bonzini
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=506AB631.8090206@redhat.com \
--to=pbonzini@redhat.com \
--cc=kvm@vger.kernel.org \
--cc=pl@dlhnet.de \
--cc=qemu-devel@nongnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).