{"id":34535,"date":"2019-10-31T21:58:54","date_gmt":"2019-10-31T18:58:54","guid":{"rendered":"https:\/\/prohoster.info\/blog\/problema-s-poterej-dannyh-na-ssd-pri-ispolzovanii-yadra-linux-5-1-lvm-i-dm-crypt\/"},"modified":"2019-10-31T21:58:54","modified_gmt":"2019-10-31T18:58:54","slug":"problema-s-poterej-dannyh-na-ssd-pri-ispolzovanii-yadra-linux-5-1-lvm-i-dm-crypt","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/problema-s-poterej-dannyh-na-ssd-pri-ispolzovanii-yadra-linux-5-1-lvm-i-dm-crypt","title":{"rendered":"Adatveszt\u00e9si probl\u00e9ma SSD-n Linux 5.1, LVM \u00e9s dm-crypt haszn\u00e1latakor","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

A hibajav\u00edt\u00f3 kiad\u00e1s \u00f6ssze\u00e1ll\u00edt\u00e1sa Linux 5.1.5<\/a><\/noindex> jav\u00edtva<\/a><\/noindex> probl\u00e9m\u00e1t okoz a DM (Device Mapper) alrendszerben, amely arra vezethetnek<\/a><\/noindex> adatveszt\u00e9st okozhat SSD meghajt\u00f3k eset\u00e9n. A probl\u00e9ma akkor l\u00e9pett fel, miut\u00e1n v\u00e1ltoz\u00e1sok<\/a><\/noindex>be lett vezetve a kernelbe az \u00e9v janu\u00e1rj\u00e1ban, \u00e9s a 5.1 \u00e1gon jelentkezik, t\u00f6bbnyire Samsung SSD meghajt\u00f3kon, ahol az adatok titkos\u00edtva vannak dm-crypt\/LUKS haszn\u00e1lat\u00e1val a device-mapper\/LVM f\u00f6l\u00f6tt. <\/p>\n

A probl\u00e9ma okai egy<\/a><\/noindex> t\u00fal agressz\u00edv blokkjel\u00f6l\u00e9s a FSTRIM r\u00e9v\u00e9n (t\u00fal sok szektort jel\u00f6lt meg egyszerre, an\u00e9lk\u00fcl, hogy figyelembe vette volna a max_io_len_target_boundary korl\u00e1tot). A 5.1 kernel-verzi\u00f3t k\u00edn\u00e1l\u00f3 disztrib\u00faci\u00f3k k\u00f6z\u00fcl a hib\u00e1t m\u00e1r kijav\u00edtott\u00e1k a Fedora<\/a><\/noindex>, de m\u00e9g mindig jav\u00edtatlan a ArchLinux<\/a><\/noindex> (jav\u00edt\u00e1s el\u00e9rhet\u0151, de jelenleg a «testing» \u00e1gon tal\u00e1lhat\u00f3). A probl\u00e9ma megker\u00fcl\u00e9s\u00e9nek m\u00f3dja a fstrim.service\/timer le\u00e1ll\u00edt\u00e1sa, a fstrim v\u00e9grehajthat\u00f3 f\u00e1jl ideiglenes \u00e1tnevez\u00e9se, a «discard» jelz\u0151 elt\u00e1vol\u00edt\u00e1sa a fstab mount opci\u00f3k k\u00f6z\u00fcl, valamint az «allow-discards» m\u00f3d kikapcsol\u00e1sa LUKS eset\u00e9n a dmsetup seg\u00edts\u00e9g\u00e9vel.<\/p>\n

<\/a><\/noindex><\/p>\n

Forr\u00e1s: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0412 \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0449\u0435\u043c \u0432\u044b\u043f\u0443\u0441\u043a\u0435 \u044f\u0434\u0440\u0430 Linux 5.1.5 \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0430 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u0432 \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u0435 DM (Device Mapper), \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043c\u043e\u0436\u0435\u0442 \u043f\u0440\u0438\u0432\u0435\u0441\u0442\u0438 \u043a \u043f\u043e\u0432\u0440\u0435\u0436\u0434\u0435\u043d\u0438\u044e \u0434\u0430\u043d\u043d\u044b\u0445 \u043d\u0430 SSD-\u043d\u0430\u043a\u043e\u043f\u0438\u0442\u0435\u043b\u044f\u0445. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u0441\u0442\u0430\u043b\u0430 \u043f\u0440\u043e\u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u043f\u043e\u0441\u043b\u0435 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f, \u0434\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u043d\u043e\u0433\u043e \u0432 \u044f\u0434\u0440\u043e \u0432 \u044f\u043d\u0432\u0430\u0440\u0435 \u044d\u0442\u043e\u0433\u043e \u0433\u043e\u0434\u0430, \u0437\u0430\u0442\u0440\u0430\u0433\u0438\u0432\u0430\u0435\u0442 \u0442\u043e\u043b\u044c\u043a\u043e \u0432\u0435\u0442\u043a\u0443 5.1 \u0438 \u0432 \u043f\u043e\u0434\u0430\u0432\u043b\u044f\u044e\u0449\u0435\u043c \u0431\u043e\u043b\u044c\u0448\u0438\u043d\u0441\u0442\u0432\u0435 \u0441\u043b\u0443\u0447\u0430\u0435\u0432 \u043f\u0440\u043e\u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u043d\u0430 \u0441\u0438\u0441\u0442\u0435\u043c\u0430\u0445 \u0441 SSD-\u043d\u0430\u043a\u043e\u043f\u0438\u0442\u0435\u043b\u044f\u043c\u0438 Samsung, \u043d\u0430 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u0442\u0441\u044f \u0448\u0438\u0444\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0434\u0430\u043d\u043d\u044b\u0445 \u0441 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435\u043c […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-34535","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Adatveszt\u00e9si probl\u00e9ma SSD-n Linux 5.1, LVM \u00e9s dm-crypt haszn\u00e1latakor | ProHoster","description":"A hibajav\u00edt\u00f3 kiad\u00e1s Linux 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