{"id":123507,"date":"2025-04-15T15:05:07","date_gmt":"2025-04-15T13:05:07","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/mehanizm-kexec-handover-dlya-perezagruzki-yadra-linux-bez-poteri-sostoyaniya"},"modified":"2025-04-15T15:05:07","modified_gmt":"2025-04-15T13:05:07","slug":"mehanizm-kexec-handover-dlya-perezagruzki-yadra-linux-bez-poteri-sostoyaniya","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/mehanizm-kexec-handover-dlya-perezagruzki-yadra-linux-bez-poteri-sostoyaniya","title":{"rendered":"Mechanismus Kexec HandOver pro restart j\u00e1dra Linuxu bez ztr\u00e1ty stavu","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

V seznamu j\u00e1dra Linux byla p\u0159edstavena \u0161est\u00e1 verze patch\u016f implementuj\u00edc\u00edch mechanismus Kexec HandOver (KHO), vyv\u00edjen\u00fd in\u017een\u00fdry z firem Amazon, Microsoft a Google. Patche byly u\u017e p\u0159ijaty do v\u011btve mm-everything, kter\u00e1 sdru\u017euje zm\u011bny pro budouc\u00ed v\u011btev j\u00e1dra 6.16, souvisej\u00edc\u00ed s \u0159\u00edzen\u00edm pam\u011bti. Na z\u00e1klad\u011b Kexec HandOver vyv\u00edj\u00ed spole\u010dnost Google subsyst\u00e9m Live Update Orchestrator (LUO), kter\u00fd umo\u017e\u0148uje restartovat j\u00e1dro bez zastaven\u00ed \u010dinnosti za\u0159\u00edzen\u00ed. <\/p>\n

Kexec HandOver poskytuje mo\u017enosti pro spu\u0161t\u011bn\u00ed nov\u00e9ho j\u00e1dra ze star\u00e9ho bez ztr\u00e1ty stavu syst\u00e9mu. V sou\u010dasnosti vol\u00e1n\u00ed kexec() funguje pouze jako na\u010d\u00edta\u010d, kter\u00fd jednodu\u0161e spou\u0161t\u00ed nov\u00e9 j\u00e1dro, kter\u00e9 pot\u00e9 zcela znovu inicializuje syst\u00e9m, co\u017e je ekvivalentn\u00ed restartu, pouze bez \u00fa\u010dasti firmware. Navrhovan\u00e1 s\u00e9rie patch\u016f realizuje jin\u00fd p\u0159\u00edstup. P\u0159ed p\u0159ed\u00e1n\u00edm \u0159\u00edzen\u00ed nov\u00e9 verzi j\u00e1dra je stav kl\u00ed\u010dov\u00fdch subsyst\u00e9m\u016f j\u00e1dra serializov\u00e1n do oblasti pam\u011bti, kter\u00e1 nebude ovlivn\u011bna dal\u0161\u00edmi operacemi. Nov\u00e9 j\u00e1dro, kter\u00e9 z\u00edsk\u00e1 \u0159\u00edzen\u00ed, obnovuje serializovan\u00fd stav zp\u011bt. Z pohledu ostatn\u00edch program\u016f je operace v\u00fdm\u011bny j\u00e1dra nepozorovateln\u00e1. <\/p>\n

Kexec HandOver m\u016f\u017ee b\u00fdt u\u017eite\u010dn\u00fd v situac\u00edch, kdy je zastaven\u00ed nep\u0159ijateln\u00e9 a je nutn\u00e9 zajistit nep\u0159etr\u017eit\u00fd cyklus pr\u00e1ce jednotliv\u00fdch za\u0159\u00edzen\u00ed. Nap\u0159\u00edklad na virtualiza\u010dn\u00edch serverech m\u016f\u017ee b\u00fdt Kexec HandOver pou\u017eit pro aktualizaci j\u00e1dra (a hypervizoru), ani\u017e by ovlivnil pam\u011b\u0165, kterou zab\u00edraj\u00ed virtu\u00e1ln\u00ed stroje, a p\u0159itom si zachoval stav jejich prov\u00e1d\u011bn\u00ed. KVM<\/a>) bez ovlivn\u011bn\u00ed pam\u011bti zabran\u00e9 virtu\u00e1ln\u00edmi stroji a p\u0159i\u010dem\u017e se zachov\u00e1v\u00e1 stav jejich vykon\u00e1v\u00e1n\u00ed.
\n
Zdroj: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0412 \u0441\u043f\u0438\u0441\u043a\u0435 \u0440\u0430\u0441\u0441\u044b\u043b\u043a\u0438 \u044f\u0434\u0440\u0430 Linux \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u0430 \u0448\u0435\u0441\u0442\u0430\u044f \u0432\u0435\u0440\u0441\u0438\u044f \u043f\u0430\u0442\u0447\u0435\u0439 \u0441 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0435\u0439 \u043c\u0435\u0445\u0430\u043d\u0438\u0437\u043c\u0430 Kexec HandOver (KHO), \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u043c\u043e\u0433\u043e \u0438\u043d\u0436\u0435\u043d\u0435\u0440\u0430\u043c\u0438 \u0438\u0437 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0439 Amazon, Microsoft \u0438 Google. \u041f\u0430\u0442\u0447\u0438 \u0443\u0436\u0435 \u043f\u0440\u0438\u043d\u044f\u0442\u044b \u0432 \u0432\u0435\u0442\u043a\u0443 mm-everything, \u0432 \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u043e\u0441\u0443\u0449\u0435\u0441\u0442\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u043d\u0430\u043a\u043e\u043f\u043b\u0435\u043d\u0438\u0435 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0439 \u0434\u043b\u044f \u0431\u0443\u0434\u0443\u0449\u0435\u0439 \u0432\u0435\u0442\u043a\u0438 \u044f\u0434\u0440\u0430 6.16, \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u044b\u0445 \u0441 \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u0435\u043c \u043f\u0430\u043c\u044f\u0442\u044c\u044e. \u041d\u0430 \u0431\u0430\u0437\u0435 Kexec HandOver \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Google \u0440\u0430\u0437\u0440\u0430\u0431\u0430\u0442\u044b\u0432\u0430\u0435\u0442 \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u0443 Live Update Orchestrator (LUO), […]<\/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-123507","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\udd47Mechanismus Kexec HandOver pro restart j\u00e1dra Linux bez ztr\u00e1ty stavu | ProHoster","description":"V seznamu j\u00e1dra Linux byla p\u0159edstavena \u0161est\u00e1 verze patch\u016f implementuj\u00edc\u00edch mechanismus Kexec HandOver (KHO), vyv\u00edjen\u00fd in\u017een\u00fdry z firem Amazon, Microsoft a 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