From mboxrd@z Thu Jan 1 00:00:00 1970 From: Juergen Gross Subject: Re: Backport requests of cs 23420..23423 for 4.0 and 4.1 Date: Fri, 20 Jul 2012 07:54:39 +0200 Message-ID: <5008F29F.4010903@ts.fujitsu.com> References: <4FFFBB55.60401@ts.fujitsu.com> <20488.9122.701811.248760@mariner.uk.xensource.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; Format="flowed" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20488.9122.701811.248760@mariner.uk.xensource.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Ian Jackson Cc: George Dunlap , Keir Fraser , xen-devel List-Id: xen-devel@lists.xenproject.org Am 19.07.2012 17:11, schrieb Ian Jackson: > Keir Fraser writes ("Re: [Xen-devel] Backport requests of cs 23420..23423 for 4.0 and 4.1"): >> On 13/07/2012 07:08, "Juergen Gross" wrote: >>> I would like to request to include these changesets in 4.0 and >>> 4.1. The backport is quite trivial, I can send patches if you are >>> willing to take them. >> >> Will need an Ack from George and then patches applied by (or at least an Ack >> from) a tools maintainer. > > Thanks for replying Keir, but I'm rather queasy about this. > > These patches have not been in any released version of Xen and are > fairly substantial. I would say that we should not backport anything > that isn't a critical bugfix which hasn't been sitting in a released > version of Xen for a while; and a new feature ought to be considered > very carefully. > > Now maybe the unfortunately extended 4.2 release cycle may mean we > should relax this rule but I'd prefer to see a clear justification for > why this is important to retrofit to 4.1. Live migration is a main high-availability feature of our next release. A performance degradation of 10% and more will not be easily accepted for a system which is expected to be up 24/7. I assume there is a reason the patches are in XCP right now. :-) Juergen -- Juergen Gross Principal Developer Operating Systems PDG ES&S SWE OS6 Telephone: +49 (0) 89 3222 2967 Fujitsu Technology Solutions e-mail: juergen.gross@ts.fujitsu.com Domagkstr. 28 Internet: ts.fujitsu.com D-80807 Muenchen Company details: ts.fujitsu.com/imprint.html