{"id":150951,"date":"2025-12-09T11:12:32","date_gmt":"2025-12-09T09:12:32","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/v-yadro-linux-dobavlen-live-update-orchestrator-dlya-obnovleniya-v-live-rezhime"},"modified":"2025-12-09T11:12:32","modified_gmt":"2025-12-09T09:12:32","slug":"v-yadro-linux-dobavlen-live-update-orchestrator-dlya-obnovleniya-v-live-rezhime","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/news\/v-yadro-linux-dobavlen-live-update-orchestrator-dlya-obnovleniya-v-live-rezhime","title":{"rendered":"Aggiunto Live Update Orchestrator al kernel Linux per aggiornamenti in tempo reale","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Nel codice sorgente del kernel Linux, su cui sar\u00e0 basata la release 6.19 all'inizio di febbraio, \u00e8 stato integrato il codice del sottosistema LUO (Live Update Orchestrator), sviluppato da Google per aggiornare il kernel in modalit\u00e0 Live senza riavvio fisico. Il sottosistema si basa sul meccanismo KHO (Kexec HandOver), gi\u00e0 aggiunto nel kernel 6.16, che consente l'avvio di un nuovo kernel da uno esistente senza perdere lo stato del sistema. <\/p>\n

Il Live Update Orchestrator consente di riavviare completamente e aggiornare il kernel senza interrompere le operazioni e senza perdere lo stato del sistema, dei dispositivi e dei processi. Oltre alla funzionalit\u00e0 di KHO, il sottosistema LUO mantiene lo stato dei dispositivi e della memoria volatile, garantendo anche la continuit\u00e0 delle operazioni legate a DMA e gestione delle interruzioni. Lo stato viene mantenuto fino allo switch al nuovo kernel e ripristinato dopo l'attivazione del nuovo kernel senza interrompere le operazioni continue con i dispositivi, gestite dal sistema e dalle applicazioni nell'area utente. <\/p>\n

Una caratteristica della nuova serie di patch \u00e8 la possibilit\u00e0 di mantenere i file descriptor memfd per preservare lo stato di dati importanti in memoria tra i riavvii, come il contenuto della memoria volatile. macchine virtuali<\/a>Come principale ambito di utilizzo del sottosistema viene citato il rapido aggiornamento server<\/a> con i sistemi di virtualizzazione basati su hypervisor KVM, per risolvere problemi di sicurezza e stabilit\u00e0 con il minimo tempo di inattivit\u00e0 delle macchine virtuali. Google sta gi\u00e0 utilizzando questa tecnologia nei propri ambienti di lavoro. <\/p>\n

A differenza di livepatch, Ksplice, kpatch, kGraft e altri meccanismi di patching a caldo, il nuovo sottosistema non \u00e8 limitato alla possibilit\u00e0 di applicare singole correzioni a un kernel in esecuzione e consente di sostituire completamente il kernel. A differenza della chiamata kexec, il sottosistema LUO conserva lo stato dei dispositivi e dei sottosistemi del kernel tra i riavvii, mentre la chiamata kexec funziona solo come loader, avviando un nuovo kernel con una completa riesecuzione del sistema (equivalente a un riavvio, ma senza trasferire il controllo al firmware).
\n
Fonte: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0412 \u043a\u043e\u0434\u043e\u0432\u0443\u044e \u0431\u0430\u0437\u0443 \u044f\u0434\u0440\u0430 Linux, \u043d\u0430 \u043e\u0441\u043d\u043e\u0432\u0435 \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u0432 \u043d\u0430\u0447\u0430\u043b\u0435 \u0444\u0435\u0432\u0440\u0430\u043b\u044f \u0431\u0443\u0434\u0435\u0442 \u0441\u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043d \u0440\u0435\u043b\u0438\u0437 6.19, \u043f\u0440\u0438\u043d\u044f\u0442 \u043a\u043e\u0434 \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u044b LUO (Live Update Orchestrator), \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0430\u043d\u043d\u043e\u0439 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0435\u0439 Google \u0434\u043b\u044f \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f \u044f\u0434\u0440\u0430 \u0432 Live-\u0440\u0435\u0436\u0438\u043c\u0435 \u0431\u0435\u0437 \u0444\u0438\u0437\u0438\u0447\u0435\u0441\u043a\u043e\u0439 \u043f\u0435\u0440\u0435\u0437\u0430\u0433\u0440\u0443\u0437\u043a\u0438. \u041f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u0430 \u0431\u0430\u0437\u0438\u0440\u0443\u0435\u0442\u0441\u044f \u043c\u0435\u0445\u0430\u043d\u0438\u0437\u043c\u0435 KHO (Kexec HandOver), \u0440\u0430\u043d\u0435\u0435 \u0434\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u043d\u043e\u043c \u0432 \u044f\u0434\u0440\u043e 6.16 \u0438 \u0440\u0435\u0430\u043b\u0438\u0437\u0443\u044e\u0449\u0435\u043c \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u0437\u0430\u043f\u0443\u0441\u043a\u0430 \u043d\u043e\u0432\u043e\u0433\u043e \u044f\u0434\u0440\u0430 \u0438\u0437 \u0441\u0442\u0430\u0440\u043e\u0433\u043e \u0431\u0435\u0437 \u043f\u043e\u0442\u0435\u0440\u0438 \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u044f 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