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charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: EB66FC0004 X-Rspam-User: X-Stat-Signature: xymuyzggi1rprj65ho6uho36r885ennc X-HE-Tag: 1768138471-68654 X-HE-Meta: U2FsdGVkX19WKLnMLl0OhcF9GfNP8h9miUIsodRsJMaJXeUBWazOU+YFleDadq3elBVmozH6OPiX+u42Z5vwY6GlvhQIgA1Hpqm9vwhpFOPIxPo0aJSzSSSkJ1lbkybrUxX38gMJTm9pAfemDpzLqEL070faAEVXRfWcjwRL3G8TyRu7Bffdk5yUiDv0Fa6pQSMDLTQjbpRN5P99LBIpW+KEdQEIjrNr+ItfsVtkW9uDGfYRAVQOii4JSodR7RtMrnKIkiwRheI18zRowAZ7JYo9uz7SY3S1EuxJkEffjPNC3niye1floFfSawbd0eI4wtaYcQfrQePIiLJdqriT73XSqbZjy2IL2PMbcZQlk9KE0wtSiKftVCREWtTcTT1F4eNZ4O4UQnNnPTFvirg9aiceX5kprcQar3BwuYvklbXyl7AbGLakY0Par7Vyc7dl7D3QYwmrrMVEME4K+MaOYt1Tgy8wPIPkFq9vvxo+kYXrIrnNx9mXDi8jt7wvH8ofrboDYVysSpE50iWn4kC6W3eGi+GxOmUOMcfNuN9kBFFpgqbJsKBheEpY95u+IWBXZ2wXAYqT5ctEKi16RTGgD3K2Vl05KSqglkmcvjYnkntsDv8BkQwndff4Wopf9gF6xINUjriseSldMpPrWldFGLZwRbv5OYLpOeL8cLebyXn/U1N+XEHbc3Yt3Rd7BMuAjovriUAJUHpdAw+t7dtSQDQNnEaBXFPxK/rsMxMx0r6pepQe+8LVgMIlmaVM3aF3hclU6eYx8zGrdr+6ZZKQi8rtZa16mdM2txRmTZHACrXLGk/m7R8FM7TlYTQFKQIxLdCdDp4K8+oyeEoWzTOk7TmEcZVXEe8tmcyMiKyTEbEi0N/+b1n+eYjOwQ6m05JNyXyl4dkqmQ4NFb3bxYGZsJWWnQdLNxB75YDSCRyAdPNitxdEULcZKboc5huJFxxWJ0i4MdIpPIxFeMOnrSf CGM58CFK sqeYMQ+qMWYhxm2kOrXkJQAcSvQr5GpKFz9AivIHEONftah7TltaDna+4F9K3juWhHuLovorR5I1eFFYRFnAFD0MwJfDItHwNvmKPCWS2DtmT4CjWAbMts3AQCkveXXybJd3oF/1jHSRCipdX19oZg8fNoMmOD6CLaDgc/QqvpMFu7ukmF72rX58Zp9dIRn2IIAOQiwDUAAB8WFdQ3xMxQ0QHBqPrr40WafkxTb5I9a+qMAfo482tSjqvc1Uu/tmwySoOvnbZFRadFvQJz9PX/FMKzPrVjPgHWHTnAOC/U9/pYXIE0WbDWJENxtnbwdEdsTRnOB8zwqHqAVWkGGqvUmXzT0nF+45T0pFfosO1ZgVOz3pMplNOJHO/hCwSlf7HcenjK9GfL8t7l+bjYpDpPh/UslRA3tt30VJSgay0I/tt6uQ= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Dne 10. 01. 26 v 8:09 Askar Safin napsal(a): > On Fri, Jan 2, 2026 at 4:47 PM Mikulas Patocka wrote: >> Hi >> >> Dm integrity doesn't need to allocate memory when processing I/O requests > > Thank you for answer! > > Unfortunately, my experience shows the opposite thing. > > [[ TL;DR: my experience shows that dm-integrity journaled mode is buggy, and > non-journaled mode is not. I. e. journaled mode seems to allocate memory, and > this causes temporary (for 4 minutes) lockups (on high specced > machine). Or maybe journaled mode has > some another bug, which causes such lockups. They are not reproducible in > non-journaled mode. ]] I think it's important to decipher what and how it's blocked - I kind of suspect your system is not blocked on 'dm-integrity' itself - rather some userland app being swapped out of CPU. You probably do need to configure your systemd-oom killer to prevent getting your system to it's knees - if you run your system to the moment whether it takes 4 minutes to run a task - there is something seriously wrong with the configuration - as OOM is supposed to kill userland RAM hogging task much earlier (possibly even your overbloated google chrome APP if it run out of bounds). So I think you should also show whole device tree of your system and some more information - so there is even 'remote' chance trying to reproduce your scenario. Regards Zdenek