{"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\/sk\/blog\/news\/linus-torvalds-nachal-sozhalet-chto-odobril-dobavlenie-bcachefs-v-yadro-linux","title":{"rendered":"Linus Torvalds za\u010dal \u013eutova\u0165, \u017ee schv\u00e1lil pridanie Bcachefs do jadra Linux","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Pri diskusii o \u010fal\u0161ej v\u00e1rke opr\u00e1v, ktor\u00e9 boli navrhnut\u00e9 na zaradenie do jadra 6.11-rc5, Linus Torvalds vyjadril \u013eutovanie, \u017ee prijal s\u00faborov\u00fd syst\u00e9m Bcachefs do jadra. Nep\u00e1\u010di sa mu, \u017ee Kent Overstreet, autor Bcachefs, na fin\u00e1lnych kandid\u00e1toch na vydanie posiela pr\u00edli\u0161 objemn\u00e9 opravy, ktor\u00e9 v podstate nielen opravuj\u00fa chyby, ale aj pokra\u010duj\u00fa v rozvoji funk\u010dnosti, zatia\u013e \u010do funk\u010dn\u00e9 zmeny s\u00fa povolen\u00e9 iba v po\u010diato\u010dnej f\u00e1ze v\u00fdvoja novej vetvy, a v f\u00e1ze rc5 s\u00fa prij\u00edman\u00e9 iba samostatn\u00e9 mal\u00e9 opravy, ktor\u00fdch ve\u013ekos\u0165 by ide\u00e1lne nemala presiahnu\u0165 100 riadkov k\u00f3du. <\/p>\n

Zaslan\u00fd patch pre Bcachefs, v ktorom bolo pridan\u00fdch 1309 riadkov a odstr\u00e1nen\u00fdch 671 riadkov v 39 s\u00faboroch, okrem opravy ch\u00fdb obsahoval dve v\u00fdznamn\u00e9 zmeny: podporu novej d\u00e1tovej \u0161trukt\u00fary na spr\u00e1vu zoznamu vo\u013en\u00fdch prvkov v cache a mo\u017enos\u0165 konverzie hash tabuliek pre cache. Nov\u00e1 \u0161trukt\u00fara bola pridan\u00e1 na odstr\u00e1nenie nadbyto\u010dn\u00fdch z\u00e1mkov cache a na vyl\u00fa\u010denie situ\u00e1ci\u00ed, ktor\u00e9 m\u00f4\u017eu vies\u0165 ku konfliktom z\u00e1mkov pri viacer\u00fdch vl\u00e1knach. <\/p>\n

Nie je to prv\u00fdkr\u00e1t, \u010do s\u00fa ve\u013ek\u00e9 opravy pre Bcachefs zasielan\u00e9 po okne prij\u00edmania zmien, a nie je to ani prv\u00fdkr\u00e1t, ke\u010f sa namiesto jednoduch\u00fdch opr\u00e1v ch\u00fdb pos\u00favaj\u00fa \u0165a\u017e\u0161ie funk\u010dn\u00e9 doplnky zaslan\u00e9 prostredn\u00edctvom po\u017eiadaviek na pridanie opr\u00e1v v kone\u010dn\u00fdch f\u00e1zach v\u00fdvoja novej vetvy. Linus Torvalds odpovedal na zaslan\u00fd pull-request: <\/p>\n

«Dos\u0165. Posledn\u00fd pull request bol tie\u017e ve\u013ek\u00fd. Tento pull request je tie\u017e pr\u00edli\u0161 obsiahly, t\u00fdka sa vec\u00ed, ktor\u00e9 nes\u00favisia s Bcachefs, a ani vzdialene nie je nejakou regresiou. V ur\u010ditom momente sa «oprava nie\u010doho» jednoducho zmen\u00ed na v\u00fdvoj, a to je ten moment. Nikto v zdravom rozume nepou\u017e\u00edva Bcachefs a neo\u010dak\u00e1va od neho stabilitu, a preto je ka\u017ed\u00fd pou\u017e\u00edvate\u013e - oblas\u0165 experimentovania. Patche Bcachefs sa stali akousi «ve\u013ekou v\u00fdvojou po\u010das cyklu pr\u00edpravy vydania, a nie pred n\u00edm», do takej miery, \u017ee za\u010d\u00ednam \u013eutova\u0165 prijatie Bcachefs. Ak Bcachefs nem\u00f4\u017ee norm\u00e1lne fungova\u0165 v s\u00falade s pl\u00e1nom v\u00fdvoja hlavn\u00e9ho (upstream) jadra, mo\u017eno by nemalo by\u0165 v hlavnom jadre. To u\u017e prekra\u010duje r\u00e1mec smie\u0161neho.» <\/p><\/blockquote>\n

Kent Overstreet odpovedal, \u017ee Bcachefs je rozhodne spo\u013eahlivej\u0161ia ako Btrfs a pracuje na tom, aby bola e\u0161te odolnej\u0161ia a spo\u013eahlivej\u0161ia ako XFS a EXT4, v\u010faka implement\u00e1cii mechanizmu celistvosti d\u00e1t (end to end data Integrity). Kent tie\u017e zd\u00f4raznil, \u017ee navrhovan\u00e9 zmeny sa priamo t\u00fdkaj\u00fa zv\u00fd\u0161enia spo\u013eahlivosti, a ak chyba v in\u00fdch subsyst\u00e9moch jadra m\u00f4\u017ee vies\u0165 len k zlyhaniu a re\u0161tartu, v s\u00faborov\u00fdch syst\u00e9moch je cena chyby ve\u013emi vysok\u00e1 a m\u00f4\u017ee vies\u0165 k skryt\u00e9mu po\u0161kodeniu \u00fadajov, ktor\u00e9 si m\u00f4\u017ee \u010dlovek v\u0161imn\u00fa\u0165 a\u017e po nieko\u013ek\u00fdch t\u00fd\u017ed\u0148och. <\/p>\n

Torvalds namietol, \u017ee doteraz neexistuj\u00fa \u017eiadne ve\u013ek\u00e9 distrib\u00facie Linuxu, ktor\u00e9 by pou\u017e\u00edvali Bcachefs, a pouk\u00e1zal na to, \u017ee treba dodr\u017eiava\u0165 pravidl\u00e1 v\u00fdvoja vydan\u00ed jadra Linuxu, preto\u017ee existuje riziko vzniku nov\u00fdch ch\u00fdb v d\u00f4sledku podobn\u00fdch ve\u013ek\u00fdch patchov, ktor\u00e9 obsahuj\u00fa viac ako 1000 riadkov k\u00f3du. V s\u00fa\u010dasnosti navrhovan\u00e9 opravy pre Bcachefs e\u0161te neboli prijat\u00e9 do jadra Linuxu a v\u00fdvoj\u00e1r Bcachefs zatia\u013e nepripravil aktualizovan\u00fa verziu pull-requestu, zbaven\u00fa prid\u00e1vania novej funk\u010dnosti a s\u00fastreden\u00fa len na opravy ch\u00fdb.
\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 \u013eutova\u0165, \u017ee schv\u00e1lil pridanie Bcachefs do jadra Linuxu | ProHoster","description":"Pri diskusii o \u010fal\u0161ej s\u00e9rii opr\u00e1v navrhnut\u00fdch na zahrnutie do jadra 6.11-rc5 autorom Bcachefs, Linus Torvalds nap\u00edsal, \u017ee za\u010d\u00edna \u013eutova\u0165, \u017ee prijal s\u00faborov\u00fd syst\u00e9m Bcachefs do 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