{"id":114884,"date":"2024-04-08T09:15:21","date_gmt":"2024-04-08T07:15:21","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/avtor-bcachefs-predstavil-patchi-dlya-ispravleniya-fs-razrushennyh-nedavnej-oshibkoj"},"modified":"2024-04-08T09:15:21","modified_gmt":"2024-04-08T07:15:21","slug":"avtor-bcachefs-predstavil-patchi-dlya-ispravleniya-fs-razrushennyh-nedavnej-oshibkoj","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/avtor-bcachefs-predstavil-patchi-dlya-ispravleniya-fs-razrushennyh-nedavnej-oshibkoj","title":{"rendered":"Bcachfs autor esitles pat\u0161e, et parandada hiljutise vea t\u00f5ttu kahjustatud failis\u00fcsteemi","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Kent Overstreet, Bcachefs failover s\u00fcsteemi arendaja, pakkus v\u00e4lja plaastrid, mis v\u00f5imaldavad Linuxi kernelil t\u00f6\u00f6tada Bcachefs failis\u00fcsteemiga isegi p\u00e4rast oluliste metainformatsiooni rike, taastades rikkis b-puud vajadusel inode ja dirent struktuuridest metainformatsiooni j\u00e4rgi. Muudatused on aktsepteeritud Linus Torvaldsi poolt ja on lisatud t\u00e4nasesse testimisversiooni kernelist 6.9-rc3. <\/p>\n

Muutused v\u00f5imaldavad kahjustatud failis\u00fcsteemide montaa\u017ei ja juurdep\u00e4\u00e4su k\u00f5igile v\u00f5i peaaegu k\u00f5ikidele hiljuti toimunud vea t\u00f5ttu m\u00f5jutatud failis\u00fcsteemi andmetele. Viga ilmnes siis, kui p\u00e4rast t\u00f6\u00f6riistade v\u00e4rskendamist tehti, kuid ei l\u00f5petatud failis\u00fcsteemi struktuuride v\u00e4rskendamise katse, millele j\u00e4rgnes vana Bcachefs realiseerimisega kernel, mis \u00fcritas struktuuride versioonide allapoole viimist, ignoreerides l\u00f5petamata v\u00e4rskendust. Selline olukord viis «split brain mode» olukorda, kus \u00fckski operatsioon ei saa olla l\u00f5petatud ja failis\u00fcsteemi b-tree struktuurid ei ole enam koosk\u00f5las reaalse sisuga. <\/p>\n

Mainitud patch lubab j\u00e4tkata t\u00f6\u00f6d isegi sellistes olukordades. Tehnoloogia piirangute hulgas mainitakse, et kui on olemas snapshots, peab b-puu snapshots olema olemas ja korras.
\n
Allikas: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041a\u0435\u043d\u0442 \u041e\u0432\u0435\u0440\u0441\u0442\u0440\u0438\u0442 (Kent Overstreet), \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a \u0424\u0421 Bcachefs, \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0438\u043b \u043f\u0430\u0442\u0447\u0438, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0435 \u044f\u0434\u0440\u0443 Linux \u0440\u0430\u0431\u043e\u0442\u0430\u0442\u044c \u0441 \u0424\u0421 Bcachefs \u0434\u0430\u0436\u0435 \u043f\u043e\u0441\u043b\u0435 \u043f\u043e\u0432\u0440\u0435\u0436\u0434\u0435\u043d\u0438\u044f \u0441\u0443\u0449\u0435\u0441\u0442\u0432\u0435\u043d\u043d\u043e\u0433\u043e \u043e\u0431\u044a\u0451\u043c\u0430 \u043c\u0435\u0442\u0430\u0434\u0430\u043d\u043d\u044b\u0445, \u043f\u0440\u0438 \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u043e\u0441\u0442\u0438 \u043f\u0435\u0440\u0435\u0441\u0442\u0440\u0430\u0438\u0432\u0430\u044f \u0438\u0441\u043f\u043e\u0440\u0447\u0435\u043d\u043d\u044b\u0435 b-\u0434\u0435\u0440\u0435\u0432\u044c\u044f \u043f\u043e \u043c\u0435\u0442\u0430\u0434\u0430\u043d\u043d\u044b\u043c \u0438\u0437 \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440 inode \u0438 dirent. \u0418\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u043f\u0440\u0438\u043d\u044f\u0442\u044b \u041b\u0438\u043d\u0443\u0441\u043e\u043c \u0422\u043e\u0440\u0432\u0430\u043b\u044c\u0434\u0441\u043e\u043c \u0438 \u0432\u043a\u043b\u044e\u0447\u0435\u043d\u044b \u0432 \u0441\u043e\u0441\u0442\u0430\u0432 \u0441\u0435\u0433\u043e\u0434\u043d\u044f\u0448\u043d\u0435\u0433\u043e \u0442\u0435\u0441\u0442\u043e\u0432\u043e\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f \u044f\u0434\u0440\u0430 6.9-rc3. \u0418\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0438\u0432\u0430\u044e\u0442 \u043c\u043e\u043d\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u043f\u043e\u0432\u0440\u0435\u0436\u0434\u0451\u043d\u043d\u044b\u0445 \u0424\u0421 \u0438 \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0442 \u0434\u043e\u0441\u0442\u0443\u043f […]<\/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-114884","post","type-post","status-publish","format-standard","hentry","category-novosti-interneta"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\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\udd47Bcachefs autor esitles patchid, mis parandavad hiljuti rikutud failis\u00fcsteemi | ProHoster","description":"Kent Overstreet, Bcachefs failis\u00fcsteemi arendaja, pakkus v\u00e4lja patchid, mis v\u00f5imaldavad Linuxi tuumal t\u00f6\u00f6tada Bcachefs failis\u00fcsteemiga isegi t\u00f5sise metaandmete kahjustuse korral, vajadusel rekonstrueerides rikutud b-puude metaandmed inode ja dirent struktuuridest. Muudatused on aktsepteeritud Linus Torvalds'i poolt ja need on kaasatud t\u00e4nase 6.9-rc3 tuuma katseuuendusse. 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