From nobody Wed Nov 5 05:22:24 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1533712408831334.2478557897; Wed, 8 Aug 2018 00:13:28 -0700 (PDT) Received: from localhost ([::1]:42132 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fnIef-0004zZ-Lg for importer@patchew.org; Wed, 08 Aug 2018 03:13:13 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:47022) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fnIcy-0003ya-A2 for qemu-devel@nongnu.org; Wed, 08 Aug 2018 03:11:29 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fnIcv-00035p-DK for qemu-devel@nongnu.org; Wed, 08 Aug 2018 03:11:28 -0400 Received: from mail-bn3nam01on0127.outbound.protection.outlook.com ([104.47.33.127]:38720 helo=NAM01-BN3-obe.outbound.protection.outlook.com) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fnIcv-000343-7I; Wed, 08 Aug 2018 03:11:25 -0400 Received: from Jupiter.local (141.226.29.227) by CY1PR07MB2617.namprd07.prod.outlook.com (2a01:111:e400:c637::15) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1017.15; Wed, 8 Aug 2018 07:11:21 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=janustech.onmicrosoft.com; s=selector1-janustech-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=pLHx9xKaBOiDTV2a45vGIWo+W90AZrxjHPn623UNZ8o=; b=q8IjjQUIQzQM1vtOlbnopOBibAsEFiOaFfq8004YMoag02HmmR9/5awrM/aapRxjhuqQc/1g7cSNPy+hnfQWDmAQ75768DA6rykESjWH+1oQTYyA03rta5NG6lPkYyrBXOzafxyumK+5LNbPuG+AMs3jPCHtflcEasg1QtYhlDA= Authentication-Results: spf=none (sender IP is ) smtp.mailfrom=lbloch@janustech.com; From: Leonid Bloch To: qemu-devel@nongnu.org Date: Wed, 8 Aug 2018 10:10:47 +0300 Message-Id: <20180808071051.30628-2-lbloch@janustech.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20180808071051.30628-1-lbloch@janustech.com> References: <20180808071051.30628-1-lbloch@janustech.com> MIME-Version: 1.0 X-Originating-IP: [141.226.29.227] X-ClientProxiedBy: AM5PR0102CA0003.eurprd01.prod.exchangelabs.com (2603:10a6:206::16) To CY1PR07MB2617.namprd07.prod.outlook.com (2a01:111:e400:c637::15) X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: ad1dcd2d-9a0d-4e9d-7562-08d5fcfe2612 X-Microsoft-Antispam: BCL:0; PCL:0; RULEID:(7020095)(4652040)(7021125)(8989117)(4534165)(7022125)(4603075)(4627221)(201702281549075)(8990107)(7048125)(7024125)(7027125)(7028125)(7023125)(5600074)(711020)(2017052603328)(7153060)(7193020); SRVR:CY1PR07MB2617; X-Microsoft-Exchange-Diagnostics: 1; CY1PR07MB2617; 3:Vuh4CkXa+iWbRGtZdQWNkg0tEvwO4YWUHxvd69SvmkaNXXs/gM5dfaIXaIlGy/4M6t4axO61AcqxuXLNkmz9PrNmbWRUWJSke+/XFrLq3J/6p+x8z/gSc2LTJhk1Rn3E1m9ebcfIHSH5+StyOiyvfgmiTHdNIN1TTyEQlVHkvx5M0gzEN8PoSHpm+8W8j56UNpYANtvKJToR3s/xRXt4Xlc5zTu+4XVLrnnzAi19ZKvKp+IjEWMoSWUnmou3YMad; 25:60Ffe3x8RIGqTHOCXjy1AAR1OklFIpjiRhjctN+6iTNhpUuEyN18a9ibhVeCnCWubKoi4aSXymSUWMbAMH0GyEiNvmUqt9+fYN0JPSJdT6bS28QnSqHFdAr3jFpCNe+CwoSDrQE7PPmQUJCSLXccUyGPZ7YjlDFz7lXU6VZuBhA8DTFAwpKG38kfZgath3LUBbXcT6pQitYBTm9zYEurNMFKSCICr1CTyjJhuCmKEQfNGspgvP0s1zuWbOAsMdlI0r0i4f63iVIDEWBNCt+92POkWvBvu70kilD0jHANNip032qjt1aM02qp5Q6a35odeAhpVcdnfWh5xeVqiWoRhw==; 31:1z1mfqqezMxTTyfC0h3y4SXkwYfKudSSs9HbBsKlJISA7naKzm2bu6b562w15n5S8QPazT3wtsyN2pPVM29n9WAeAjRu3wk/EbefbEQUneov25LYgVGnZRrUo9FI8P7RP1zoQOcaOqdQwa3OynsZBNxX4C+KgfArXbBYezzNfN5cdZFOIgTD6isy873eX9KUYyEbocKG12nVGmlYBUlZN3Ksf7pfqyBfHTKTiA0ICR4= X-MS-TrafficTypeDiagnostic: CY1PR07MB2617: X-Microsoft-Antispam-PRVS: X-Exchange-Antispam-Report-Test: UriScan:; X-MS-Exchange-SenderADCheck: 1 X-Exchange-Antispam-Report-CFA-Test: BCL:0; PCL:0; RULEID:(6040522)(2401047)(8121501046)(5005006)(93006095)(93001095)(10201501046)(3231311)(944501410)(52105095)(3002001)(149027)(150027)(6041310)(20161123558120)(2016111802025)(20161123560045)(20161123564045)(20161123562045)(6072148)(6043046)(201708071742011)(7699016); SRVR:CY1PR07MB2617; BCL:0; PCL:0; RULEID:; SRVR:CY1PR07MB2617; X-Microsoft-Exchange-Diagnostics: 1; CY1PR07MB2617; 4:pnqR9N9+lHxr5MgIC+LYLLt2FvLZIVOLW/J+6wdQLrwdDlfvkdhpMnKcT70GF+hGRsmSKVNYNyRYi9rRVW4M4IrucKigCtlP2Fd5ASY/j1BYlCVsieEvXT+I+VRhtj28E9DKizeYDLN+DeIMtKRhIzosh44gYomZU/yRw+zFo8tE54RaPqLGNB4gxq/vHc5Oo8B3Cu1o7naQPl6DLWgM8T2R8KpL4g1TjnXO5Crgv8qj0GBRXfS1JpU/SpM69sgjgDNfm6UYKwEksDwbtGmL9g== X-Forefront-PRVS: 07584EDBCD X-Forefront-Antispam-Report: SFV:NSPM; SFS:(10019020)(136003)(366004)(39830400003)(396003)(346002)(376002)(199004)(189003)(36756003)(6916009)(107886003)(6512007)(4326008)(186003)(53936002)(50226002)(25786009)(51416003)(81156014)(48376002)(6486002)(8936002)(50466002)(8676002)(68736007)(81166006)(52116002)(6666003)(2906002)(54906003)(97736004)(16526019)(575784001)(551984002)(105586002)(16586007)(86362001)(66066001)(305945005)(2361001)(2616005)(316002)(386003)(6506007)(2351001)(47776003)(106356001)(7736002)(76176011)(1076002)(11346002)(478600001)(26005)(956004)(486006)(476003)(6116002)(5660300001)(446003)(3846002)(14444005); DIR:OUT; SFP:1102; SCL:1; SRVR:CY1PR07MB2617; H:Jupiter.local; FPR:; SPF:None; LANG:en; PTR:InfoNoRecords; A:1; MX:1; Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: None (protection.outlook.com: janustech.com does not designate permitted sender hosts) X-Microsoft-Exchange-Diagnostics: =?us-ascii?Q?1; CY1PR07MB2617; 23:6zztsxBAx9bvXf80Dd2Azola9SL7UvIWbzA45NMGT?= =?us-ascii?Q?FWr0a3lAjJT+oBMNzTB/aoJeT90Ue1xwGqxyqJqdTVf4E1AHGFOCE+0EgGCA?= =?us-ascii?Q?SZ+7fTDtJKeaLrcfrs/MnoM7gP8d/ZkRZnsHzI25KULzKMQn6dxkAaOUH9LD?= =?us-ascii?Q?StnG/3UEkFHzwKt/KXkLMSZ7m1dnWGUjS9MXAq2ni8Ss9meR2Avng3xCxIyq?= =?us-ascii?Q?n+rcpyS/CH4B1sbKHug8JQp3EwDT6zOP/Sfn5xci7a/vcSKtlwWwk7F+Eswb?= =?us-ascii?Q?8o2oA5qEkAcF/0qcqot1O3hEbOdhgKtObDM8SOTRqpTEqpGYkxwVPBitYWB8?= =?us-ascii?Q?FjfJWJNqPYIxHY1hgOb2jxeoLwiHU8wszLp6AGFNyIqHuIwd9lSXXhOUyOFf?= =?us-ascii?Q?/zl9x2tKR1/XPBahDqRpnP6fGNXy5HVD8+Vo6nlHrKN+f2VhP8E0QmKsRCGd?= =?us-ascii?Q?PdfObizOJqTWuBfU5hOtwt7vtHFWVI3OFZruP2f5ThiA8hgnYIWS3lsGOgwd?= =?us-ascii?Q?Ze81/Pa06F/WmsRn4rQxSax1s8WOqqiaLbJ/Q19LN2vqTd1cPhla+Nl4y5cI?= =?us-ascii?Q?CtUzoVgY9EztRytSEZodgC56WimGRK2xvRNmygQTzR/6ML506zxOw01Ejnjl?= =?us-ascii?Q?VVGgd3nu930fwAJUlqku89Ak3Dp3xWpMd6ib24v7l2SRBwNFawiTa8g/CsM4?= =?us-ascii?Q?iiBMZHwwP8dwwVCblBs/Ievx6t4EM28iCkIrLrwjTWlGiF8H+LfOWrcDRZBw?= =?us-ascii?Q?/jeYKv7TR2tjKcJ7gv404LaqMbUq156bVG3jzn1TvykAupcyBwwh51rvB6Gw?= =?us-ascii?Q?YJkLCt4yCFniR/Mtlt+manjgrC8af7COND8LhHifi/tP5FyoJJNRyLPpXY9d?= =?us-ascii?Q?Q1PY8wcXzj19seoYPWpfzmqOPtOfaYrASMMHW+hJwVk5jiIqk2dBAgwnqpuf?= =?us-ascii?Q?7E9FraTTUbqHNOzvg+wH42jZWftIoX9A3Fat2rL/rYDluyGrASRWlpjWg2UT?= =?us-ascii?Q?ObPsK99if3JQ4d6Lnrt1oQpRPRpJvkdk57FbY5LlVVN0f3iVUsLV1RGWS0eG?= =?us-ascii?Q?Q7s/yQnoYgARCXrc84HQ8SiAGJG3Y2imS+w0DW06k1gE+UsjkC2RLNs42Mt7?= =?us-ascii?Q?JqXNhxJINbeZAGxD+cBhrJl8XUHhWVhZdbAZ8c0h1rtheGGv8PZc16eikcoy?= =?us-ascii?Q?leFTQd0HTRHD/hLbzAVwr107TfVbw4AxVnDVqxgC/vKpcvGAMq+/phGW9aN7?= =?us-ascii?Q?L/44LQZMiRgKFfjou5GrjrfUhHLvwlBhqUHWMRp1PtNjydmGLkr543+FWry/?= =?us-ascii?Q?IR5nR4RuYeFsdDV/2hetA9sfpsF7CmHfqlPg5NizmDm?= X-Microsoft-Antispam-Message-Info: y20/rNmaD7gBlvjSKXcY/0HvVfSsROmd8cLF5EFuF5whXvb9Ve0OqcIqpXy3t/UC06Ff2/6vCpCk/EXNsR/vilPTv1/kd9rMhQtmYDbT7wXtsVw5aQsr8wflf+zM4PW2sMX8uP45doiudSP9L54klMVAaL5IK6uIP3IylaBPvFKk5h0DHSaR4PCd6bS92eIbA9SEeE6QdMN7UVV6wvIPTUEBnOXR8xFRI/wUiYQr/fkjfJ6E8BiQZdspDyO4eGfdiIFbCh10AnY8cqxQMKrkyoz18gXChi386xG0brL/u7zpHPiYUEp0uKkDpJBJG3BO5KdW/fFVTTq/27IzHYXRsdEWWXlvIgZpBwJ2jU63vOE= X-Microsoft-Exchange-Diagnostics: 1; CY1PR07MB2617; 6:5zRZ5G0f4dHemiWNNTNdeSF6QM4ap4DL/x+SCt2J0EyktmNE82Mpvy6mhpvjm2CEfIkFjwJ7HHI3USeg873kymyf6+Mavon/L0ZnyWRKOP+SlFSxVhUqPTD8+1soxmDx/SbfrzZC0q/KopK3U+ZHGPjcv1S2/XbRDkMxZLpAIky0616Vecj4vgwI5XVyUyvkwlVU2p/VvjM5Vd0R5m2JC7F76vxMRasp6rmOcHzKYCPhpSKMo5tSjqjSO7GQC+amQVrgHOSAF7TIFKmaT7q301Gkzn9XegAv81eMyUg5BpzDNE+ROknvj7fymMhjMxvRill+GGelWtdaouzk5gM+WHhUHHgLnkKSeckrwUdP+xvYwJzOQPBY1zlfEeyC8JstmmMg3aiMGptim0qk93uzNPzIhzPSoQSsjiej4Ln1StzvjRMK0GCU5xiu8nDlh5fBOl5ku7/aSaTzdJbylOxirQ==; 5:OFyapcQvKVj0G2nwOXi7owpDHlqu1Kvb6mXr63kt910FqDyJ3yCWr8vQKQ6iEsks2qgCUyqmMz3vt/IDfNWBmIp3UKI+4ioa7zv6fj0OoMIk8ZjzEeqMB1y76bq0U6wbR9OSLVVFHpILEfOgdincpP+doJG5yIjvzRSIzQySlig=; 7:i8xQ1feR+LT8vqnbdUPQj9Uy8/Vi+xZLRbCVDGwPH39VOi1FwJow+I2IVRJNgmKQSUUWsWHCFySdqhUnuW39ezkLWzVg+VYemxR4wfeCLvkMYZpEgALgnpts+k+nYvFzHI1Cup6v+6hoU80KTTWcX9clJjUISq7vZhEsqc02MWlQv2/qlTBTQqghZSy680Y1ZLEq7vKlTI17+7OP/1vcJeztRjrOr1dDBAyWpn7IcEvcv4Xyuaj3g2PXQlurP20+ SpamDiagnosticOutput: 1:99 SpamDiagnosticMetadata: NSPM X-OriginatorOrg: janustech.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 08 Aug 2018 07:11:21.5294 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: ad1dcd2d-9a0d-4e9d-7562-08d5fcfe2612 X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 34eb020e-3cf3-43a1-afeb-f5cf1310628e X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY1PR07MB2617 X-detected-operating-system: by eggs.gnu.org: Windows 7 or 8 [fuzzy] X-Received-From: 104.47.33.127 Subject: [Qemu-devel] [PATCH v3 1/5] qcow2: Options' documentation fixes X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , Alberto Garcia , qemu-block@nongnu.org, Max Reitz , Leonid Bloch Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZohoMail: RDKM_2 RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Signed-off-by: Leonid Bloch Reviewed-by: Alberto Garcia --- docs/qcow2-cache.txt | 3 +++ qemu-options.hx | 9 ++++++--- 2 files changed, 9 insertions(+), 3 deletions(-) diff --git a/docs/qcow2-cache.txt b/docs/qcow2-cache.txt index 8a09a5cc5f..5bf2a8ad29 100644 --- a/docs/qcow2-cache.txt +++ b/docs/qcow2-cache.txt @@ -130,6 +130,9 @@ There are a few things that need to be taken into accou= nt: memory as possible to the L2 cache before increasing the refcount cache size. =20 + - At most two of "l2-cache-size", "refcount-cache-size", and "cache-size" + can be set simultaneously. + Unlike L2 tables, refcount blocks are not used during normal I/O but only during allocations and internal snapshots. In most cases they are accessed sequentially (even during random guest I/O) so increasing the diff --git a/qemu-options.hx b/qemu-options.hx index b1bf0f485f..f6804758d3 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -752,15 +752,18 @@ image file) =20 @item cache-size The maximum total size of the L2 table and refcount block caches in bytes -(default: 1048576 bytes or 8 clusters, whichever is larger) +(default: the sum of l2-cache-size and refcount-cache-size) =20 @item l2-cache-size The maximum size of the L2 table cache in bytes -(default: 4/5 of the total cache size) +(default: if cache-size is not defined - 1048576 bytes or 8 clusters, whic= hever +is larger; otherwise, as large as possible or needed within the cache-size, +while permitting the requested or the minimal refcount cache size) =20 @item refcount-cache-size The maximum size of the refcount block cache in bytes -(default: 1/5 of the total cache size) +(default: 4 times the cluster size; or if cache-size is specified, the par= t of +it which is not used for the L2 cache) =20 @item cache-clean-interval Clean unused entries in the L2 and refcount caches. The interval is in sec= onds. --=20 2.17.1