From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from firstgate.proxmox.com (firstgate.proxmox.com [212.224.123.68]) by lore.proxmox.com (Postfix) with ESMTPS id 9E2061FF137 for ; Tue, 17 Feb 2026 13:18:23 +0100 (CET) Received: from firstgate.proxmox.com (localhost [127.0.0.1]) by firstgate.proxmox.com (Proxmox) with ESMTP id 806A935CC5; Tue, 17 Feb 2026 13:19:13 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=open-e.com; s=s1-ionos; t=1771330743; x=1771935543; i=andrei.perepiolkin@open-e.com; bh=fVbcOhaCwQ4QLCyVu8oWl4Cwv1zqsqyZKDmna61/Zm8=; h=X-UI-Sender-Class:Message-ID:Date:MIME-Version:To:From:Subject: Content-Type:Content-Transfer-Encoding:cc: content-transfer-encoding:content-type:date:from:message-id: mime-version:reply-to:subject:to; b=PO71NZk9tbKebrW87GvLRh0Y7wQcR2LDptH+SDA5wEvx36rEjzEwrBhOkE7NHeL1 MGGlUIy0xmmozdDu2vxPU0s30nlQPpIpi78S8M8rrmN2noeC+AD4n9tQhgT6hy8gy EHT50QPkyg2zWdJiyfyak26mxNEbKNdzv+lAH/XB8rfKd7hG3y2V8GRVF71bbygm8 j6dG6JpBiFnaK46lqOcJSzsbZXxI7dGayF2RPAlTcuTjuDHrY9UIfzcHFlh6zCzY7 CNLO9TfWX1/QKnoO+gs5mmQN3Ao61HvoyhFCgEawWj8fr4X4vlmTZhgpWicrx29AY +CIvh/4E7adG340DnQ== X-UI-Sender-Class: 55c96926-9e95-11ee-ae09-1f7a4046a0f6 Message-ID: Date: Tue, 17 Feb 2026 07:06:05 -0500 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Content-Language: en-US To: Proxmox VE development discussion From: Andrei Perepiolkin Subject: [pve-devel] storage plugin volume sync during live migration Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:nw1GFNaWUpINr2JsvaJTItw1Pqv0AbVilj+qCDN50XOpPn8b4lA vDIVfg6TeAYYw8IkmtpBB8hZfXxCN7Cf2pu1t4/EKz41GbfbhE1ozXmlHSLFpQYGrkFefVn bjuq2K3/AocgRmbWV0sTu+uAhva4HhQyEPgcJG53l09+T/j2T9eYW9KXtdZWMyaJvu/GWH9 dECKGngnl7L1W7Khg7UGg== X-Spam-Flag: NO UI-OutboundReport: notjunk:1;M01:P0:RcQdpPd39vA=;mZerH59r1xjUVSYwAN4wkennB1n hbhepdaw5RHvJXA8FfTEvg46HwaqJEEQzcwpTwc3wokobaAndYWGpQ0gJ3HXmKoq1lD5yBr8a ef0M3n5v+dDPPUtLiSxNpEHmHn3E8606u1YxsTnQn9dXtDdwvLofhiQ4tS+xwg2QrJEzfjMmZ wb8M0wQQi+I1nEo4PygMm/h6UiURj8Y2krk0C4IcOxMYygjmJPJd3TyXErvm28xFAMS6q/9zc EgLigLIEgMYAhkFHOzRHdgnA/vhzBzi9LhxXv6ZTruponv2IBOYBDvRqWWoLruh0SlFKPML8z G2BroLiXPQA0upnt1qEJomRjTvS+8wMMzder9MjGif3/Sck8leTvGwj4IqCsBIZ0mK10YLVbO 7KCoBjcvdrg68GcQ8U1jXHhDOTibw7jbg+JX9tEKDNI5QNlYBkwrQdWsojGOwkzRfHyn5Dne/ 6ep7fD+24cpybe7lxVxvxXwydqcitzH9ycK7iuxBFzi8BLbOYVUI2Kd6WJoFQiRNx5tteo+c6 bsT8WuIyxk2I85Fk6dPRWyY4xTwKbsFY/AXHThHwQsVuaY83o402xe8qW541CoWsJlvgFE6Es n1lxQRwLbcWZfH7V+ygjQXw8PciBT49DgOtrt0WIszNoWtCRsIv48hDsM6n+qgw9PpwlTCqUZ rN4oa3HWze6PINyL6wFJXlDsZ7TOWtjV+NVt8F1QcMrN6oIgXi7sJWBCmB5s49sWrjQ5VRELS umTA0mBdivJ0nmZnrr8FjhokP4fHuUkmpYfAWT1C30wNuDxoZXT19Ad2bjXYOr504Jpj33Byu tf3J4BZWFoy3lhjW41pfpzGEpBjq2/8g7xFBsB9ESrVVLrr6Q56p6/O+nEsN+fGau8o6zdwjZ HX18G5oEWUI0yFQIuF9VbkIjujUCfyXy3ipzM1JVuu8QRL1+PndejFODQlnSqnbeHDqndub5Z mWqy0miK6bXEJyg6lZ/LElxPUQ5/p90tGct6wKlxpDSqetyaS+OSxTYTBcBhXGlpdywMNoE9Y pS12YSm2KhOWTSqWSotQoNnKs2hEiemb0oXeHpoPaXMP+vIeD+nKrQOsGan8Bwap1nyXrwQ4y pzkikn6IqXRVWZIqu+H506EJYf97aexgMYH9v9Zpi7HlgWcN9B0fY27kxYx6I+90ZdgLRnnj8 gXblKh4s0NKlkNhIlSZwvx7O0UzU5p27cUvxCsQQYfjyrAJfO9KHNfAvGsFKAW1gdKIsUDAhl H1KOwhD6DT2Gzkb8MeuOI/XJKXrgGxUpzuvfUmOD0R/ZA6BJz0gLhqqzKWruSo11dpXjrVmhb O2O5cGiJiEhA/ZWtVtb5AQIXsUtUfbs/7tGsMab/r+nh9mI5O0PbNbwZA1dJHHDUUSOHL9cWs 01l6f+koVdGfU0WACKRsM7MHcf3bjWDv9dnxtMn5GtyITWrobbDDTf323H6eroeInHGufYJHH kcaYNXRaH/ejmy0qgl9PrmY8hFQYYjWApDWFvmI0C7/46OMzjJ4bwL+Mhc6XUphYgZf5ug/+B vGtAcEZDel8MTPRO8SY8mU5BkTF54nIERJFV+or+XvFGw+pgQw9QK8Z1CrrHG73+iq//O4CD7 hujHjMedqMR0nPfag5DOKxcRHicStVIjbgydg9JPkxOD7D2em244Hz+X/mvzJYxd0XdEHf02L g71y36Hkn5/6poXA39CMWT07zq+NgiPXULGmVjqXk8ZjhFD7KtnztiQN+75NmqXrcQKGmaPm0 N/zfou5w9xItdPd7rweCPqJJZWI4Jicc+mQ== X-SPAM-LEVEL: Spam detection results: 0 AWL -0.005 Adjusted score from AWL reputation of From: address BAYES_00 -1.9 Bayes spam probability is 0 to 1% DKIM_SIGNED 0.1 Message has a DKIM or DK signature, not necessarily valid DKIM_VALID -0.1 Message has at least one valid DKIM or DK signature DKIM_VALID_AU -0.1 Message has a valid DKIM or DK signature from author's domain DKIM_VALID_EF -0.1 Message has a valid DKIM or DK signature from envelope-from domain DMARC_PASS -0.1 DMARC pass policy RCVD_IN_DNSWL_NONE -0.0001 Sender listed at https://www.dnswl.org/, no trust RCVD_IN_MSPIKE_H3 0.001 Good reputation (+3) RCVD_IN_MSPIKE_WL 0.001 Mailspike good senders RCVD_IN_VALIDITY_CERTIFIED_BLOCKED 0.001 ADMINISTRATOR NOTICE: The query to Validity was blocked. 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SPF_HELO_NONE 0.001 SPF: HELO does not publish an SPF Record SPF_PASS -0.001 SPF: sender matches SPF record Message-ID-Hash: XK652VF6STRZXWKGNXPZGTWAOVEJ4WSZ X-Message-ID-Hash: XK652VF6STRZXWKGNXPZGTWAOVEJ4WSZ X-MailFrom: andrei.perepiolkin@open-e.com X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; loop; banned-address; emergency; member-moderation; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.10 Precedence: list List-Id: Proxmox VE development discussion List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: Hi, I have a question regarding Proxmox storage plugin=20 activate_volume/deactivate_volume concurrency for shared volumes. During live migration volume can be simultaneously attached to multiple=20 nodes at same time. =C2=A0=C2=A0=C2=A0 If vm migrates from node1 to node2, activate volume on= node2 will=20 be called before deactivate is done on node1. This raises question regarding concurrency, a specially for sync-like=20 operations. Does Proxmox have any mean to guaranty that no I/O will be performed on=20 node2 until deactivation on node1 is completed? Can I/O operation take place on node2 before activation on node2 is=20 completed? Best regards, Andrei Perepiolkin