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[70.52.229.124]) by smtp.gmail.com with ESMTPSA id kr9-20020a0562142b8900b005dd8b934577sm3083621qvb.15.2023.03.27.09.28.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 27 Mar 2023 09:28:20 -0700 (PDT) Date: Mon, 27 Mar 2023 12:28:19 -0400 From: Peter Xu To: Leonardo Bras Cc: Juan Quintela , "Dr. David Alan Gilbert" , qemu-devel@nongnu.org Subject: Re: [RFC PATCH v1 1/1] migration: Disable postcopy + multifd migration Message-ID: References: <20230327161518.2385074-1-leobras@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20230327161518.2385074-1-leobras@redhat.com> Received-SPF: pass client-ip=170.10.133.124; envelope-from=peterx@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On Mon, Mar 27, 2023 at 01:15:18PM -0300, Leonardo Bras wrote: > Since the introduction of multifd, it's possible to perform a multifd > migration and finish it using postcopy. > > A bug introduced by yank (fixed on cfc3bcf373) was previously preventing > a successful use of this migration scenario, and now it should be > working on most cases. > > But since there is not enough testing/support nor any reported users for > this scenario, we should disable this combination before it may cause any > problems for users. > > Suggested-by: Dr. David Alan Gilbert > Signed-off-by: Leonardo Bras Acked-by: Peter Xu -- Peter Xu