{"id":184188,"date":"2026-11-08T23:41:05","date_gmt":"2026-11-08T21:41:05","guid":{"rendered":"https:\/\/prohoster.info\/blog\/news\/predstavlen-kmorph-dlya-bystrogo-vosstanovleniya-posle-sboya-ili-obnovleniya-yadra-linux"},"modified":"2026-11-08T23:41:09","modified_gmt":"2026-11-08T21:41:09","slug":"kmorph-introduced-for-fast-recovery-after-a-linux-kernel-crash-or-update","status":"publish","type":"post","link":"https:\/\/prohoster.info\/ro\/blog\/news\/kmorph-introduced-for-fast-recovery-after-a-linux-kernel-crash-or-update","title":{"rendered":"A fost lansat kmorph pentru recuperare rapid\u0103 dup\u0103 o defectare sau actualizare a kernel-ului Linux","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Dezvoltatorii proiectului Multikernel, care permite rularea mai multor instan\u021be independente ale nucleului pe un singur computer fizic f\u0103r\u0103 hipervizor \u0219i virtualizare, au prezentat un instrument numit kmorph, care implementeaz\u0103 mijloace pentru recuperarea rapid\u0103 \u00een urma unei opriri nea\u0219teptate a nucleului Linux sau pentru \u00eenlocuirea nucleului \u00een modul Live f\u0103r\u0103 o repornire complet\u0103. Proiectul este dezvoltat de Cong Wang, care \u00eentre\u021bine subsistemul de control al traficului (TC, Traffic Control) din nucleu. Metoda de repornire rapid\u0103 se bazeaz\u0103 pe \u00eenc\u0103rcarea \u00een memorie a unui nucleu de rezerv\u0103, care \u00eenlocuie\u0219te nucleul principal de lucru \u00een cazul unei defec\u021biuni sau c\u00e2nd este necesar\u0103 \u00eenlocuirea nucleului cu o versiune nou\u0103. <\/p>\n

Abordarea propus\u0103 permite evitarea unei reporniri complete \u0219i re\u00eenceperea activit\u0103\u021bii aproape instantaneu, minimiz\u00e2nd timpul de nefunc\u021bionare. \u00cen prezent, \u00een cazul unei opriri nea\u0219teptate a nucleului, o repornire complet\u0103 a sistemelor mari servere<\/a> \u00eent\u00e2rzierile dureaz\u0103 c\u00e2teva minute din cauza proceselor lungi de ini\u021bializare a echipamentului, \u00eenc\u0103rc\u0103rii mediului sistemic \u0219i salv\u0103rii dump-ului memoriei nucleului prin mecanismul kdump. Practic, utilizarea kdump implic\u0103 dou\u0103 reporniri ale nucleului \u2014 mai \u00eent\u00e2i se \u00eenc\u0103rca un exemplar separat al nucleului prin kexec pentru a salva dump-ul memoriei, dup\u0103 care se execut\u0103 \u00eenc\u0103rcarea nucleului de lucru \u0219i pornirea serviciilor de sistem.<\/p>\n

\u00cen cazul utiliz\u0103rii kmorph legat de un nucleu CPU specific, \u00een memorie este \u00eenc\u0103rcat \u00een avans un nucleu de rezerv\u0103 Linux \u0219i un mediu de sistem minim, care monitorizeaz\u0103 starea nucleului principal. \u00cen cazul \u00eentreruperii sau intr\u0103rii \u00een panic\u0103 a nucleului principal, mediu de rezerv\u0103 preia controlul, salveaz\u0103 dump-ul de memorie al nucleului defect, comut\u0103 asupra sa nuclee de procesor, memorie, dispozitive, configura\u021bie de re\u021bea \u0219i FS. <\/p>\n

Comutarea este coordonat\u0103 prin dou\u0103 programe: kmorph \u2014 care ruleaz\u0103 \u00een mediul activ, formeaz\u0103 con\u021binutul mediului de rezerv\u0103 \u0219i sincronizeaz\u0103 starea re\u021belei \u00een acesta; kmorphd \u2014 care ruleaz\u0103 \u00een mediul de rezerv\u0103 \u0219i monitorizeaz\u0103 starea mediului activ. Pe l\u00e2ng\u0103 comutarea \u00een caz de defect, kmorph poate fi folosit pentru a actualiza nucleul f\u0103r\u0103 o repornire tradi\u021bional\u0103. Pentru a accelera restaurarea \u00een mediul de rezerv\u0103, pe l\u00e2ng\u0103 nucleu \u0219i un set minim de componente sistemice, pot fi ini\u021biate servicii tipice, cum ar fi nginx, \u00een mod de a\u0219teptare. \u00cen acest caz, \u00een momentul activ\u0103rii mediului de rezerv\u0103, serviciul nginx va fi deja \u00eenc\u0103rcat \u00een memorie \u0219i va \u00eencepe imediat s\u0103 prelucreze cererile dup\u0103 comutarea la noul mediu al pl\u0103cii de re\u021bea, activarea configura\u021biei re\u021bei \u0219i schimbarea sistemului de fi\u0219iere r\u0103d\u0103cin\u0103.<\/p>\n

\u00cen testele efectuate, serverul cu nginx prin intermediul kmorph \u00ee\u0219i reia activitatea \u00een aproximativ 2 secunde dup\u0103 o defec\u021biune a nucleului, dar \u00een viitor se inten\u021bioneaz\u0103 s\u0103 se realizeze comutarea instantanee, f\u0103r\u0103 a fi observat\u0103 de clien\u021bii conecta\u021bi. \u00cen prezent, kmorph suport\u0103 arhitecturi x86_64 \u0219i ARM64, iar lucr\u0103rile pentru suportul RISC-V sunt \u00een desf\u0103\u0219urare. Integrarea kmorph \u00een distribu\u021biile Linux se realizeaz\u0103 analog cu suportul kdump, prin instrumentele standard dracut, initramfs-tools, kernel-install \u0219i serviciul systemd.<\/p>\n

Nucleul con\u021bine deja mecanismele Kexec HandOver (KHO) \u0219i Live Update Orchestrator (LUO), care permit lansarea unui nou nucleu din cel vechi f\u0103r\u0103 pierderea st\u0103rii sistemului \u0219i f\u0103r\u0103 oprirea func\u021bion\u0103rii dispozitivelor. Dar acestea nu pot fi utilizate \u00een caz de defec\u021biune a nucleului, deoarece necesit\u0103 salvarea st\u0103rii nucleului activ. KHO \u0219i LUO sunt, de asemenea, inferioare kmorph \u00een ceea ce prive\u0219te viteza de comutare, deoarece \u00een kmorph noul nucleu se afl\u0103 deja \u00een memorie, \u00een timp ce KHO \u0219i LUO necesit\u0103 o repornire a nucleului prin kexec.
\n
Sursa: opennet.ro<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0420\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 Multikernel, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0435\u0433\u043e \u043d\u0430 \u043e\u0434\u043d\u043e\u043c \u0444\u0438\u0437\u0438\u0447\u0435\u0441\u043a\u043e\u043c \u043a\u043e\u043c\u043f\u044c\u044e\u0442\u0435\u0440\u0435 \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u0442\u044c \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u043d\u0435\u0437\u0430\u0432\u0438\u0441\u0438\u043c\u044b\u0445 \u044d\u043a\u0437\u0435\u043c\u043f\u043b\u044f\u0440\u043e\u0432 \u044f\u0434\u0440\u0430 \u0431\u0435\u0437 \u0433\u0438\u043f\u0435\u0440\u0432\u0438\u0437\u043e\u0440\u0430 \u0438 \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438, \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u043b\u0438 \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u0439 kmorph, \u0440\u0435\u0430\u043b\u0438\u0437\u0443\u044e\u0449\u0438\u0439 \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0430 \u0434\u043b\u044f \u0431\u044b\u0441\u0442\u0440\u043e\u0433\u043e \u0432\u043e\u0441\u0441\u0442\u0430\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f \u043f\u043e\u0441\u043b\u0435 \u0430\u0432\u0430\u0440\u0438\u0439\u043d\u043e\u0439 \u043e\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0438 \u044f\u0434\u0440\u0430 Linux \u0438\u043b\u0438 \u0434\u043b\u044f \u0437\u0430\u043c\u0435\u043d\u044b \u044f\u0434\u0440\u0430 \u0432 Live-\u0440\u0435\u0436\u0438\u043c\u0435 \u0431\u0435\u0437 \u043f\u043e\u043b\u043d\u043e\u0446\u0435\u043d\u043d\u043e\u0439 \u043f\u0435\u0440\u0435\u0437\u0430\u0433\u0440\u0443\u0437\u043a\u0438. \u041f\u0440\u043e\u0435\u043a\u0442 \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u0442 \u041a\u043e\u043d\u0433 \u0412\u0430\u043d\u0433 (Cong Wang), \u0441\u043e\u043f\u0440\u043e\u0432\u043e\u0436\u0434\u0430\u044e\u0449\u0438\u0439 \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u0443 \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0442\u0440\u0430\u0444\u0438\u043a\u043e\u043c (TC, Traffic Control) \u0432 \u044f\u0434\u0440\u0435. \u041c\u0435\u0442\u043e\u0434 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":10,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-184188","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\n","aioseo_head_json":{"title":"\ud83e\udd47kmorph a fost lansat pentru recuperarea rapid\u0103 dup\u0103 defec\u021biune sau actualizarea nucleului Linux | ProHoster","description":"Dezvoltatorii proiectului Multikernel, care permite executarea mai multor instan\u021be independente ale nucleului pe un singur computer fizic f\u0103r\u0103 hipervizor \u0219i virtualizare, au prezentat unelte kmorph, care implementeaz\u0103 aceste func\u021bionalit\u0103\u021bi.","canonical_url":"https:\/\/prohoster.info\/ro\/blog\/news\/kmorph-introduced-for-fast-recovery-after-a-linux-kernel-crash-or-update","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"ro_RO","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u041f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d kmorph \u0434\u043b\u044f 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\u0433\u0438\u043f\u0435\u0440\u0432\u0438\u0437\u043e\u0440\u0430 \u0438 \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438, \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u043b\u0438 \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u0439 kmorph, \u0440\u0435\u0430\u043b\u0438\u0437\u0443\u044e\u0449\u0438\u0439 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