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Tsirkin" To: Anton Kuchin Cc: Stefan Hajnoczi , Vladimir Sementsov-Ogievskiy , qemu-devel@nongnu.org, yc-core@yandex-team.ru, "Dr. David Alan Gilbert" , Markus Armbruster , Eduardo Habkost , Juan Quintela , Daniel =?iso-8859-1?Q?P=2E_Berrang=E9?= , Paolo Bonzini , virtio-fs@redhat.com, Eric Blake Subject: Re: [PATCH v3 1/1] vhost-user-fs: add migration type property Message-ID: <20230301152038-mutt-send-email-mst@kernel.org> References: <20230224034258-mutt-send-email-mst@kernel.org> <8611d901-0940-3747-c2cd-9c193c7f24f2@yandex-team.ru> <20230228094756-mutt-send-email-mst@kernel.org> <20230228161602-mutt-send-email-mst@kernel.org> <8c3c140a-3c11-ba21-0c53-9cf25928bad0@yandex-team.ru> <20230301101212-mutt-send-email-mst@kernel.org> <78299aea-4049-991b-fe89-de0d1845bdff@yandex-team.ru> <20230301121224-mutt-send-email-mst@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Received-SPF: pass client-ip=170.10.129.124; envelope-from=mst@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 Wed, Mar 01, 2023 at 09:35:56PM +0200, Anton Kuchin wrote: > I do trust them :) > I have to, otherwise we would need to pack all the properties and > flags of qemu to the migration stream and validate them at > destination or entire migration ends up broken beyond repair if > orchestrators tend to do stupid things and need babysitting. This is not at all a crazy idea. It has some disadvantages too esp around cross version migration, which is why we don't do this yet. -- MST