From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: <010701a19bf42232-541acb7c-3041-4220-a363-8ce4940028a9-000000@eu-central-1.amazonses.com> Received: from PA4PR04CU001.outbound.protection.outlook.com (mail-francecentralazon11023079.outbound.protection.outlook.com [40.107.162.79]) by lore.virtuozzo.com (Postfix) with ESMTPS id 3670F8017D for ; Mon, 2 Nov 2026 11:10:35 +0000 (UTC) ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=whsdATpfAhckNAnvVmAT66LxRSbYiSwZ9vFWo71MQYNr7JBp68Fg8UD/P+yz11VI4WUfGMWQ+9zVHzHRXVSSFsFCUffqwkYyqWcP9rT8A8o/BzPUofFXVaJqzHaUI3xOoSpbac/gUbP/F2jNA8RmFBSRY28GxdyEbCDJc6tWkYa8l3n9SeHO0AiOdc0rteeeXp+Cuwd+lCyCednQ4NgND6VftvOBSW5s8ESv3XE3ImSDJ5rJcTPDnEJQXFy7DCLg4T/ZtOsU/76tURBlFawRQIoAKfmWPVg6J16HMeNfO489C79frOI6T+YWTVTEjYcCXu7yWgRhWLewgjkbAQQbjg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=MlSxRhRU0h8o1H0Xza2h3RZGQsDKKwzSetUedrTON9Y=; b=AbD+sQjgCDdsGokUcBaVKleSOeg6r2EK2o+6VpiHJLi/Zxb5cgUtXaKQ/HjdxTPJ3tI9olgrUhcrR6ElTtibAKfDRyPxnEUo3pW7Wc3x8vZuxYytQ8ixpAia4ipmQ34JbTejIbgWrLzxEoY5nzZ9IzIH8yBR7jIXJf6Mfv7k0ticZ0yOxMnfklUDiO2u7R2mTlPHs+SDWdPXCRbyPd0ri8XOq4NZRimeEMvM0g1phSqPZ8/q+S57017+OYzq+0TzZ9jnj0YRVFwkK/rOHiWEk+aAVMMS+CNL2no3MbbVzKrGGje/F7tQUtdNC5nPsC7NUFEf2pQiuSsipwbBaKbAAg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 69.169.224.2) smtp.rcpttodomain=virtuozzo.com smtp.mailfrom=eu-central-1.amazonses.com; dmarc=pass (p=quarantine sp=quarantine pct=100) action=none header.from=sashiko.virtuozzo.com; dkim=pass (signature was verified) header.d=sashiko.virtuozzo.com; dkim=pass (signature was verified) header.d=amazonses.com; arc=none (0) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=virtuozzo.onmicrosoft.com; s=selector2-virtuozzo-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=MlSxRhRU0h8o1H0Xza2h3RZGQsDKKwzSetUedrTON9Y=; b=Auq6r1eMgYbQmoMj97ZCAUOsHasPVkW2zQkbAis27oXl+VF3f6j7pL0t/r1ViKFQw0lRP5/NJw+crNU8oqfgDidqHxWngqF1de3SmBBWtnYF9pFjxwKR3uD8Da8IALQ/fiXJyOfb+lToM17E8Q/Wvj1HDPw6kWdlt8Rf7FBaT8k= Received: from AM8P189CA0001.EURP189.PROD.OUTLOOK.COM (2603:10a6:20b:218::6) by GV1PR08MB10478.eurprd08.prod.outlook.com (2603:10a6:150:16a::15) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.569.12; Mon, 2 Nov 2026 11:10:31 +0000 Received: from AM2PEPF00070CF3.eurprd02.prod.outlook.com (2603:10a6:20b:218:cafe::6e) by AM8P189CA0001.outlook.office365.com (2603:10a6:20b:218::6) with Microsoft SMTP Server (version=TLS1_3, cipher=TLS_AES_256_GCM_SHA384) id 15.21.569.12 via Frontend Transport; Mon, 2 Nov 2026 11:10:31 +0000 Authentication-Results: mx.microsoft.com 1; spf=pass (sender IP is 69.169.224.2) smtp.mailfrom=eu-central-1.amazonses.com; dkim=pass (signature was verified) header.d=sashiko.virtuozzo.com;dkim=pass (signature was verified) header.d=amazonses.com;dmarc=pass action=none header.from=sashiko.virtuozzo.com; Received-SPF: Pass (protection.outlook.com: domain of eu-central-1.amazonses.com designates 69.169.224.2 as permitted sender) receiver=protection.outlook.com; client-ip=69.169.224.2; helo=b224-2.smtp-out.eu-central-1.amazonses.com; pr=C Received: from b224-2.smtp-out.eu-central-1.amazonses.com (69.169.224.2) by AM2PEPF00070CF3.mail.protection.outlook.com (10.167.242.5) with Microsoft SMTP Server (version=TLS1_3, cipher=TLS_AES_256_GCM_SHA384) id 15.21.592.5 via Frontend Transport; Mon, 2 Nov 2026 11:10:30 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/simple; s=23yjbh4k34hwzfubhuiim7m4inbd3ick; d=sashiko.virtuozzo.com; t=1793617830; h=Message-ID:From:Subject:To:In-Reply-To:References:Content-Type:Content-Transfer-Encoding:Date; bh=D9y74At3AZoVEc5Ym77ncgO3z8CcItdBr9fv3TJ1KP0=; b=xca8B7tAyWZzVLpTYvYkQ0WWK6DkatRG2iGiXAeZMEi8W247ABzC32f8ll1JPAhO /Xj7csrvJ7HGe4ntlQDN5QG2TGZ3HTdEkOdNEnEWTQhiwNEnKnI+SamJleJmeDoiQDJ aK9skp3w1FBALU0UvGlHvSkVPH8UtU4skpCLbVt+JTNNhxX+4eCyXmvWSH6MRk6Z3OW aL5lM08GiFMBNblnm0Cok+CPOYYymdJeGrnwYXfEea+AyLT9KGZssgjc7hKynUSVloM yWK7jTsz2NsG21rCMB18E41Hy6z67e3Xf6Q4ey/H0M1dG+eJGFPcqn5Z7qeA4mgw6f/ XcmYwq7iNg== DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/simple; s=qftdzk2dqsatjnlrq4r5brjbihpfcrsh; d=amazonses.com; t=1793617830; h=Message-ID:From:Subject:To:In-Reply-To:References:Content-Type:Content-Transfer-Encoding:Date:Feedback-ID; bh=D9y74At3AZoVEc5Ym77ncgO3z8CcItdBr9fv3TJ1KP0=; b=nfYHRkRW/MBtAeSU575UUJE5zHpYr6WfiY8Kn6tc9YpoLuPm/D6Z+Q2Sebb0dmjI 6wwsoLgIgJmFLrntAyk/65Uiygt2lnXMa6WgWrsmpMXVLEf+GRaVmik4QV9DQA/MRYx YEg3VwWb0HkHNbR1nAYO0Ph0y453h+ChG3G6/eFM= Message-ID: <010701a19bf42232-541acb7c-3041-4220-a363-8ce4940028a9-000000@eu-central-1.amazonses.com> From: no-reply@sashiko.virtuozzo.com Subject: Re: [PATCH QEMU HCI-8.1 v6 31/34] VZ: migration/cpr-exec: don't exec if a vhost-net device can't be released To: svt-core@virtuozzo.com, Andrey Drobyshev In-Reply-To: <20261102-vfio_v1-v6-31-9bc7cabc850d@virtuozzo.com> References: <20261102-vfio_v1-v6-0-9bc7cabc850d@virtuozzo.com> <20261102-vfio_v1-v6-31-9bc7cabc850d@virtuozzo.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Mon, 2 Nov 2026 11:10:30 +0000 Feedback-ID: ::1.eu-central-1.2wRQJBpg9g1fGRYexx3dUuYGS25Bux+2TEOx72/m6U4=:AmazonSES X-SES-Outgoing: 2026.11.02-69.169.224.2 X-EOPAttributedMessage: 0 X-EOPTenantAttributedMessage: 0bc7f26d-0264-416e-a6fc-8352af79c58f:0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: AM2PEPF00070CF3:EE_|GV1PR08MB10478:EE_ MIME-Version: 1.0 X-MS-Office365-Filtering-Correlation-Id: 88cc8646-8c4a-4aa0-af6b-08df38d1e87b X-LD-Processed: 0bc7f26d-0264-416e-a6fc-8352af79c58f,ExtAddr X-MS-Exchange-AtpMessageProperties: SA List-Id: svt-core@virtuozzo.com X-MS-Exchange-Transport-Rules-Loop: 1 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|704162011799003|32142699015|61400799027|48200799018|376014|9140799003|4143699003|56012099006|5063699009|261009223027099003|261028144727099003|261026121527099003|261026140227099003|261022105027099003|10067099003|55112099003|18002099003|22082099003|16102099003|4113699003|5113699003; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:69.169.224.2;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:b224-2.smtp-out.eu-central-1.amazonses.com;PTR:b224-2.smtp-out.eu-central-1.amazonses.com;CAT:NONE;SFS:(13230040)(704162011799003)(32142699015)(61400799027)(48200799018)(376014)(9140799003)(4143699003)(56012099006)(5063699009)(261009223027099003)(261028144727099003)(261026121527099003)(261026140227099003)(261022105027099003)(10067099003)(55112099003)(18002099003)(22082099003)(16102099003)(4113699003)(5113699003);DIR:OUT;SFP:1102; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: +lOOO3ieZ2c5XFwRkv63A2wGggqPXS2M0Kqlwizl9wnL9Edui8to/AWfW+V5gzJMUcaYkipbgIpWKCF2RTZJ39R/6yJjvaVS+FS8hEG7ktriNOgmJo+eQcYfjsvPtCKyhSAwx1VwUl0n/B+fHzywx/StPjtdxX7ow2OKGBXpvwD3xO2tiiIb6UhEWqD1Q48NbPg7hG0OnrVhfqcIm3Z4++xuO8yNzCNGQuz/41gEuA9zn/N6rV3u7LtVLRLqrQIG1l/T7355YyHmtWTKmlmJ96aVXEiOmuJBUD6fKq+E6OwY5lfpYdIxPH8jOHAHCNXES9RDtw+0IAu4TrzO/kRNCHgcrRQ1LbylIsAmrYtkHpSfq4BmCycfshXpN+1ATSa22f98XpDQLuaQcT+MrEbPxX+1aey5vG7kFGHmXWQKvJIs3ISs5lE6hTjZXJPjARBv X-ExternalRecipientOutboundConnectors: 0bc7f26d-0264-416e-a6fc-8352af79c58f X-OriginatorOrg: virtuozzo.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 02 Nov 2026 11:10:30.8991 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 88cc8646-8c4a-4aa0-af6b-08df38d1e87b X-MS-Exchange-CrossTenant-Id: 0bc7f26d-0264-416e-a6fc-8352af79c58f X-MS-Exchange-CrossTenant-AuthSource: AM2PEPF00070CF3.eurprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: Internet X-MS-Exchange-Transport-CrossTenantHeadersStamped: GV1PR08MB10478 > vhost_net_cpr_reset_owners() only warns when VHOST_RESET_OWNER fails for > a device, and the exec goes on. But the new QEMU can't take such a > device: it is still owned by the old mm, so VHOST_SET_OWNER fails with > EBUSY, and the guest is left without network after the update. >=20 > Stop at the first device that can't be released and abort the cpr-exec > instead. The VM goes on in the old QEMU, with the devices released so > far taken back. vhost-vsock already does that in its pre_save. >=20 > Fixes: 1278e4830052 ("VZ: migration/cpr-exec: vhost-net: send RESET_OWNER= before cpr-exec") > Signed-off-by: Andrey Drobyshev Sashiko has reviewed this patch and found no issues. It looks great! --=20 Sashiko AI review =C2=B7 https://sashiko.vzint.dev/#/patchset/20261102-vfio= _v1-v6-0-9bc7cabc850d@virtuozzo.com?part=3D31