{"id":119617,"date":"2024-08-25T21:43:12","date_gmt":"2024-08-25T19:43:12","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/linus-torvalds-nachal-sozhalet-chto-odobril-dobavlenie-bcachefs-v-yadro-linux"},"modified":"2024-08-25T21:43:12","modified_gmt":"2024-08-25T19:43:12","slug":"linus-torvalds-nachal-sozhalet-chto-odobril-dobavlenie-bcachefs-v-yadro-linux","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/linus-torvalds-nachal-sozhalet-chto-odobril-dobavlenie-bcachefs-v-yadro-linux","title":{"rendered":"Linus Torvalds za\u010dal litovat, \u017ee schv\u00e1lil p\u0159id\u00e1n\u00ed Bcachefs do j\u00e1dra Linuxu.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

P\u0159i projedn\u00e1v\u00e1n\u00ed dal\u0161\u00ed v\u00e1rky oprav navr\u017een\u00fdch pro za\u0159azen\u00ed do j\u00e1dra 6.11-rc5 autor Bcachefs, Linus Torvalds, uvedl, \u017ee za\u010d\u00edn\u00e1 litovat, \u017ee p\u0159ijal souborov\u00fd syst\u00e9m Bcachefs do j\u00e1dra. Nespokojenost Torvaldse vypl\u00fdv\u00e1 z toho, \u017ee Kent Overstreet, autor Bcachefs, v kl\u00ed\u010dov\u00e9 f\u00e1zi vyd\u00e1n\u00ed pos\u00edl\u00e1 p\u0159\u00edli\u0161 obs\u00e1hl\u00e9 opravy, kter\u00e9 sice opravuj\u00ed chyby, ale tak\u00e9 pokra\u010duj\u00ed ve v\u00fdvoji funkcionality, p\u0159i\u010dem\u017e funk\u010dn\u00ed zm\u011bny jsou povoleny pouze v po\u010d\u00e1te\u010dn\u00ed f\u00e1zi v\u00fdvoje nov\u00e9 v\u011btve a ve f\u00e1zi rc5 se p\u0159ij\u00edmaj\u00ed pouze jednotliv\u00e9 drobn\u00e9 opravy, jejich\u017e velikost by nem\u011bla p\u0159ekro\u010dit 100 \u0159\u00e1dk\u016f k\u00f3du. <\/p>\n

Odeslan\u00fd pro Bcachefs patch, kter\u00fd obsahoval 1309 p\u0159idan\u00fdch \u0159\u00e1dk\u016f a 671 odstran\u011bn\u00fdch \u0159\u00e1dk\u016f ve 39 souborech, krom\u011b oprav chyb zahrnoval dv\u011b v\u00fdznamn\u00e9 zm\u011bny: podporu nov\u00e9 datov\u00e9 struktury pro spr\u00e1vu seznamu voln\u00fdch prvk\u016f v cache a mo\u017enost transformace hash tabulek pro cache. Nov\u00e1 struktura byla p\u0159id\u00e1na k odstran\u011bn\u00ed zbyte\u010dn\u00fdch z\u00e1mk\u016f cache a k vylou\u010den\u00ed situac\u00ed, kter\u00e9 by mohly v\u00e9st ke konflikt\u016fm z\u00e1mk\u016f p\u0159i v\u00edcetr\u00e9ninkov\u00e9m zat\u00ed\u017een\u00ed. <\/p>\n

Nen\u00ed to poprv\u00e9, kdy byly velk\u00e9 opravy pro Bcachefs odesl\u00e1ny po okn\u011b pro p\u0159ij\u00edm\u00e1n\u00ed zm\u011bn, a nen\u00ed to poprv\u00e9, kdy se m\u00edsto jednoduch\u00fdch oprav chyb prosazuj\u00ed t\u011b\u017e\u0161\u00ed funk\u010dn\u00ed dopl\u0148ky prost\u0159ednictv\u00edm \u017e\u00e1dost\u00ed o sta\u017een\u00ed v kone\u010dn\u00fdch f\u00e1z\u00edch v\u00fdvoje nov\u00e9 v\u011btve. Linus Torvalds reagoval na zaslan\u00fd pull request: <\/p>\n

\u201eDost. Posledn\u00ed pull-request byl tak\u00e9 velk\u00fd. Tento pull-request je tak\u00e9 p\u0159\u00edli\u0161 obs\u00e1hl\u00fd, t\u00fdk\u00e1 se v\u011bc\u00ed, kter\u00e9 nesouvis\u00ed s Bcachefs, a ani zdaleka se nepova\u017euje za regresi. V ur\u010dit\u00e9m okam\u017eiku se \u201eopravov\u00e1n\u00ed n\u011b\u010deho\u201c prost\u011b prom\u011bn\u00ed ve v\u00fdvoj, a to je pr\u00e1v\u011b ten okam\u017eik. Nikdo p\u0159i smyslech nepou\u017e\u00edv\u00e1 Bcachefs a neo\u010dek\u00e1v\u00e1 od n\u011bj stabilitu, proto ka\u017ed\u00fd u\u017eivatel \u2014 to je sf\u00e9ra experiment\u016f. Patche Bcachefs se staly jakousi \u201evelkou prac\u00ed b\u011bhem cyklu p\u0159\u00edpravy vyd\u00e1n\u00ed, nikoli p\u0159ed n\u00edm\u201c, a\u017e do takov\u00e9 m\u00edry, \u017ee za\u010d\u00edn\u00e1m litovat p\u0159ijet\u00ed Bcachefs. Pokud Bcachefs nem\u016f\u017ee norm\u00e1ln\u011b fungovat v souladu s \u010dasov\u00fdm harmonogramem v\u00fdvoje hlavn\u00edho (upstream) j\u00e1dra, mo\u017en\u00e1 by nem\u011blo b\u00fdt v hlavn\u00edm j\u00e1dru. To u\u017e p\u0159ekra\u010duje hranici sm\u011b\u0161n\u00e9ho. <\/p><\/blockquote>\n

Kent Overstreet odpov\u011bd\u011bl, \u017ee Bcachefs je rozhodn\u011b spolehliv\u011bj\u0161\u00ed ne\u017e Btrfs a pracuje na tom, aby byla je\u0161t\u011b stabiln\u011bj\u0161\u00ed a spolehliv\u011bj\u0161\u00ed ne\u017e XFS a EXT4, d\u00edky zaveden\u00ed mechanismu celkov\u00e9 integrity dat (end to end data Integrity). Kent tak\u00e9 zd\u016fraznil, \u017ee navrhovan\u00e9 zm\u011bny se p\u0159\u00edmo t\u00fdkaj\u00ed zv\u00fd\u0161en\u00ed spolehlivosti, a pokud chyba v jin\u00fdch subsyst\u00e9mech j\u00e1dra m\u016f\u017ee b\u00fdt omezena na selh\u00e1n\u00ed a restart, v souborov\u00fdch syst\u00e9mech je cena chyby velmi vysok\u00e1 a m\u016f\u017ee v\u00e9st k skryt\u00e9mu po\u0161kozen\u00ed dat, kter\u00e9 m\u016f\u017ee b\u00fdt odhaleno jen t\u00fddny pozd\u011bji. <\/p>\n

Torvalds nam\u00edtl, \u017ee dosud neexistuj\u00ed velk\u00e9 distribuce Linuxu, kter\u00e9 by pou\u017e\u00edvaly Bcachefs, a pouk\u00e1zal na to, \u017ee je t\u0159eba dodr\u017eovat pravidla v\u00fdvoje verz\u00ed j\u00e1dra Linux, proto\u017ee zde hroz\u00ed riziko nov\u00fdch chyb v d\u016fsledku takto velk\u00fdch z\u00e1plat obsahuj\u00edc\u00edch v\u00edce ne\u017e 1000 \u0159\u00e1dk\u016f k\u00f3du. V sou\u010dasnosti navrhovan\u00e1 opraven\u00ed pro Bcachefs nejsou p\u0159ijata do j\u00e1dra Linuxu a v\u00fdvoj\u00e1\u0159 Bcachefs zat\u00edm nep\u0159ipravil aktualizovanou verzi pull requestu, kter\u00e1 by se zbavila p\u0159id\u00e1n\u00ed nov\u00e9 funk\u010dnosti a soust\u0159edila se pouze na opravu chyb.
\n
Zdroj: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041f\u0440\u0438 \u043e\u0431\u0441\u0443\u0436\u0434\u0435\u043d\u0438\u0438 \u043e\u0447\u0435\u0440\u0435\u0434\u043d\u043e\u0439 \u043f\u043e\u0440\u0446\u0438\u0438 \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u0439, \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u043d\u044b\u0445 \u0434\u043b\u044f \u0432\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u044f \u0432 \u044f\u0434\u0440\u043e 6.11-rc5 \u0430\u0432\u0442\u043e\u0440\u043e\u043c Bcachefs, \u041b\u0438\u043d\u0443\u0441 \u0422\u043e\u0440\u0432\u0430\u043b\u044c\u0434\u0441 \u043d\u0430\u043f\u0438\u0441\u0430\u043b, \u0447\u0442\u043e \u043d\u0430\u0447\u0438\u043d\u0430\u0435\u0442 \u0441\u043e\u0436\u0430\u043b\u0435\u0442\u044c \u043e \u0442\u043e\u043c, \u0447\u0442\u043e \u043f\u0440\u0438\u043d\u044f\u043b \u0444\u0430\u0439\u043b\u043e\u0432\u0443\u044e \u0441\u0438\u0441\u0442\u0435\u043c\u0443 Bcachefs \u0432 \u0441\u043e\u0441\u0442\u0430\u0432 \u044f\u0434\u0440\u0430. \u041d\u0435\u0434\u043e\u0432\u043e\u043b\u044c\u0441\u0442\u0432\u043e \u0422\u043e\u0440\u0432\u0430\u043b\u044c\u0434\u0441\u0430 \u0441\u0432\u044f\u0437\u0430\u043d\u043e \u0441 \u0442\u0435\u043c, \u0447\u0442\u043e \u041a\u0435\u043d\u0442 \u041e\u0432\u0435\u0440\u0441\u0442\u0440\u0438\u0442 (Kent Overstreet), \u0430\u0432\u0442\u043e\u0440 Bcachefs, \u043d\u0430 \u0441\u0442\u0430\u0434\u0438\u0438 \u0444\u0438\u043d\u0430\u043b\u044c\u043d\u044b\u0445 \u043a\u0430\u043d\u0434\u0438\u0434\u0430\u0442\u043e\u0432 \u0432 \u0440\u0435\u043b\u0438\u0437\u044b, \u043f\u0440\u0438\u0441\u044b\u043b\u0430\u0435\u0442 \u0441\u043b\u0438\u0448\u043a\u043e\u043c \u043e\u0431\u044a\u0451\u043c\u043d\u044b\u0435 \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043f\u043e \u0441\u0443\u0442\u0438, \u043d\u0435 […]<\/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-119617","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\udd47Linus Torvalds za\u010dal litovat, \u017ee schv\u00e1lil p\u0159id\u00e1n\u00ed Bcachefs do j\u00e1dra Linux | ProHoster","description":"P\u0159i diskusi o dal\u0161\u00edm bal\u00ed\u010dku oprav navr\u017een\u00fdch k zahrnut\u00ed do j\u00e1dra 6.11-rc5 autorem Bcachefs, Linus Torvalds napsal, \u017ee za\u010d\u00edn\u00e1 litovat, \u017ee p\u0159ijal souborov\u00fd syst\u00e9m Bcachefs do 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