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Thu, 16 Dec 2021 15:56:14 +0100 Subject: Re: [PATCH] sstate: Make image cache imagetype-specific To: Anton Mikanovich , "Schmidt, Adriaan" , "isar-users@googlegroups.com" References: <20211215125748.299859-1-amikan@ilbers.de> <71383be7-3921-7d1f-bff2-507fb655ac7a@ilbers.de> From: Jan Kiszka Message-ID: <5cfd3de3-a6b7-f3e2-c2dc-ac922242bf86@siemens.com> Date: Thu, 16 Dec 2021 15:56:13 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.13.0 MIME-Version: 1.0 In-Reply-To: <71383be7-3921-7d1f-bff2-507fb655ac7a@ilbers.de> Content-Type: text/plain; charset="utf-8" Content-Language: en-US Content-Transfer-Encoding: 7bit Return-Path: jan.kiszka@siemens.com X-Originating-IP: [139.22.140.88] X-ClientProxiedBy: DEMCHDC8A1A.ad011.siemens.net (139.25.226.107) To DEMCHDC8A0A.ad011.siemens.net (139.25.226.106) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 8134af3c-558e-488e-6c2f-08d9c0a4358a X-MS-TrafficTypeDiagnostic: DB7PR10MB1947:EE_ X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:9508; 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X-OriginatorOrg: siemens.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 Dec 2021 14:56:15.4444 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 8134af3c-558e-488e-6c2f-08d9c0a4358a X-MS-Exchange-CrossTenant-Id: 38ae3bcd-9579-4fd4-adda-b42e1495d55a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=38ae3bcd-9579-4fd4-adda-b42e1495d55a;Ip=[194.138.21.73];Helo=[hybrid.siemens.com] X-MS-Exchange-CrossTenant-AuthSource: DB5EUR01FT058.eop-EUR01.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB7PR10MB1947 X-TUID: tRuuezIZmFGD On 16.12.21 10:22, Anton Mikanovich wrote: > 15.12.2021 17:33, Schmidt, Adriaan wrote: >> Actually, now that IMAGE_FSTYPES supports generating multiple images >> with different types at once, multiconfig is the wrong way to go in >> this scenario. >> >> When creating the same two images via IMAGE_FSTYPES="targz-img >> cpiogz-img" >> there is no problem, and we can then even go one step further and >> remove the ${IMAGE_SUFFIX} completely. >> Eventually, this will enable better sharing (and caching), e.g., in this >> case both images are built from the same rootfs, which is what is >> stored in the sstate-cache. >> >> Also, when removing IMAGE_SUFFIX, the task-once-stamp logic from >> isar-events >> will warn that something is wrong in case IMAGE_FSTYPES is set in >> multiconfig (which is exactly what we want): >> >> ERROR: Detect multiple executions of do_image in >> /work/build/tmp/work/debian-buster-amd64/isar-image-base-qemuamd64/1.0-r0 >> ERROR: Rerun a clean build with empty STAMPCLEAN and compare the >> sigdata files >> >> Adriaan > > Making different image types share the same rootfs sounds really good, > but its separation was compelled. > Some architectural changed will be needed to make it work. > What's still missing? Jan -- Siemens AG, T RDA IOT Corporate Competence Center Embedded Linux