{"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\/it\/blog\/news\/linus-torvalds-nachal-sozhalet-chto-odobril-dobavlenie-bcachefs-v-yadro-linux","title":{"rendered":"Linus Torvalds ha iniziato a rimpiangere di aver approvato l'aggiunta di Bcachefs al kernel di Linux","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Durante la discussione su un altro insieme di correzioni proposte per l'inclusione nel kernel 6.11-rc5 da parte dell'autore di Bcachefs, Linus Torvalds ha scritto di iniziare a rimpiangere di aver accolto il filesystem Bcachefs nel kernel. Il malcontento di Torvalds \u00e8 legato al fatto che Kent Overstreet, l'autore di Bcachefs, durante la fase dei candidati finali, invia correzioni troppo ampie che, in sostanza, non solo risolvono errori, ma continuano anche lo sviluppo delle funzionalit\u00e0, nonostante le modifiche funzionali siano ammesse solo nelle fasi iniziali dello sviluppo di un nuovo ramo; nella fase rc5 sono accettate solo piccole correzioni singole, la cui dimensione non dovrebbe idealmente superare le 100 righe di codice.       <\/p>\n<p>Il patch inviato per Bcachefs, che ha aggiunto 1309 righe e rimosso 671 righe in 39 file, oltre a correggere errori, includeva due modifiche significative: supporto per una nuova struttura dati per gestire l'elenco degli elementi liberi nella cache e la possibilit\u00e0 di convertire le tabelle hash per la cache. La nuova struttura \u00e8 stata aggiunta per eliminare blocchi di cache non necessari ed escludere situazioni che potrebbero portare a conflitti di blocco sotto carichi multithreading.     <\/p>\n<p>Non \u00e8 la prima volta che grandi correzioni per Bcachefs vengono inviate dopo la finestra di accettazione delle modifiche, e non \u00e8 la prima volta che invece di semplici correzioni di errori vengono promosse modifiche funzionali pi\u00f9 pesanti, presentate tramite richieste di modifica nelle fasi finali dello sviluppo di un nuovo ramo. Linus Torvalds ha risposto alla pull request inviata:  <\/p>\n<blockquote><p>    Basta. L'ultimo pull request \u00e8 stato piuttosto grande. Anche questo pull request \u00e8 eccessivamente voluminoso, toccando questioni non correlate a Bcachefs, e non \u00e8 nemmeno vagamente una regressione. A un certo punto, \"correggere qualcosa\" diventa semplicemente sviluppo, e questo \u00e8 quel momento. Nessuno in sane condizioni usa Bcachefs e si aspetta stabilit\u00e0 da esso, quindi ogni utente \u00e8 un campo di esperimenti. Le patch di Bcachefs sono diventate una sorta di \"grande sviluppo durante il ciclo di preparazione del rilascio, e non prima\", al punto che inizio a rammaricarmi di aver adottato Bcachefs. Se Bcachefs non pu\u00f2 funzionare correttamente secondo il programma di sviluppo del nucleo upstream, forse non dovrebbe essere nel nucleo principale. Siamo gi\u00e0 oltre il ridicolo.  <\/p><\/blockquote>\n<p>Kent Overstreet ha risposto che Bcachefs \u00e8 decisamente pi\u00f9 affidabile di Btrfs e sta lavorando per farla diventare pi\u00f9 resistente e affidabile di XFS ed EXT4, grazie all'implementazione di un meccanismo di integrit\u00e0 dei dati end-to-end. Kent ha anche sottolineato che le modifiche proposte riguardano direttamente il miglioramento dell'affidabilit\u00e0 e che, se un errore in altri sottosistemi del kernel potrebbe limitarsi a un crash e un riavvio, negli filesystem il costo di un errore \u00e8 molto alto e pu\u00f2 portare a danni dati nascosti che potrebbero essere notati solo settimane dopo.          <\/p>\n<p>Torvalds ha obiettato che finora non ci sono grandi distribuzioni Linux che utilizzano Bcachefs e ha sottolineato che \u00e8 necessario seguire le regole di sviluppo delle versioni del kernel Linux, poich\u00e9 c'\u00e8 il rischio di introdurre nuovi errori a causa di patch di questo tipo, contenenti pi\u00f9 di 1000 righe di codice. Al momento, le correzioni discusse per Bcachefs non sono state accettate nel kernel Linux e lo sviluppatore di Bcachefs non ha ancora preparato una versione aggiornata della pull request, priva di nuove funzionalit\u00e0 e concentrata solo sulla correzione di errori.<br \/>\n<br \/>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=61761\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\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 [&hellip;]<\/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<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041f\u0440\u0438 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