{"id":55018,"date":"2020-01-10T00:00:00","date_gmt":"2020-01-09T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/linus-torvalds-poyasnil-v-chyom-problemy-realizatsii-zfs-dlya-yadra-linux"},"modified":"2020-02-18T14:03:05","modified_gmt":"2020-02-18T11:03:05","slug":"linus-torvalds-poyasnil-v-chyom-problemy-realizatsii-zfs-dlya-yadra-linux","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/linus-torvalds-poyasnil-v-chyom-problemy-realizatsii-zfs-dlya-yadra-linux","title":{"rendered":"Linus Torvalds magyar\u00e1zta el, hogy mik a ZFS Linux kernelre val\u00f3 megval\u00f3s\u00edt\u00e1s\u00e1nak probl\u00e9m\u00e1i","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

A besz\u00e9lget\u00e9s sor\u00e1n tesztjeir\u0151l<\/a><\/noindex> A feladatkezel\u0151 egyik r\u00e9sztvev\u0151je p\u00e9ldak\u00e9nt hozta fel, hogy a Linux kernel fejleszt\u00e9sekor a kompatibilit\u00e1s meg\u0151rz\u00e9s\u00e9nek sz\u00fcks\u00e9gess\u00e9g\u00e9re tett nyilatkozatok ellen\u00e9re a legut\u00f3bbi m\u00f3dos\u00edt\u00e1sok megs\u00e9rtett\u00e9k a \"ZFS Linuxon<\/a><\/noindex>\". Linus Torvalds v\u00e1laszolt<\/a><\/noindex>, hogy a \"ne t\u00f6rj ki<\/a><\/noindex> felhaszn\u00e1l\u00f3k<\/a><\/noindex>\" elv vonatkozik a felhaszn\u00e1l\u00f3i t\u00e9rben alkalmaz\u00e1sok \u00e1ltal haszn\u00e1lt kernel k\u00fcls\u0151 interf\u00e9szek meg\u0151rz\u00e9s\u00e9re, valamint mag\u00e1ra a kernelre. De nem terjed ki azokra a harmadik felek \u00e1ltal k\u00fcl\u00f6n fejlesztett r\u00e9tegekre, amelyek nem ker\u00fcltek be a kernel f\u0151\u00f6sszeg\u00e9be, \u00e9s amelyek szerz\u0151i a saj\u00e1t kock\u00e1zatukra kell, hogy figyelemmel k\u00eds\u00e9rj\u00e9k a kernel v\u00e1ltoz\u00e1sait.<\/p>\n

A \"ZFS on Linux\" projekttel kapcsolatban Linus nem aj\u00e1nlotta a zfs modul haszn\u00e1lat\u00e1t a CDDL \u00e9s GPLv2 licenc inkompatibilit\u00e1sa miatt. A helyzet az, hogy az Oracle c\u00e9ggel kapcsolatos licenc politik\u00e1ja miatt a ZFS-nek nagyon kis es\u00e9lye van arra, hogy valaha is beker\u00fclj\u00f6n a kernel f\u0151 \u00f6sszeg\u00e9be. Az licenc inkompatibilit\u00e1s megker\u00fcl\u00e9s\u00e9re javasolt r\u00e9tegek, amelyek a kernel funkci\u00f3ihoz val\u00f3 k\u00fcls\u0151 hozz\u00e1f\u00e9r\u00e9st k\u00f6zvet\u00edtik, k\u00e9tes megold\u00e1snak sz\u00e1m\u00edtanak - a jog\u00e1szok tov\u00e1bbra is vit\u00e1znak<\/a><\/noindex> arr\u00f3l, hogy a kernel GPL-funkci\u00f3inak \u00fajraexport\u00e1l\u00e1sa csomagol\u00f3kon kereszt\u00fcl l\u00e9trehoz-e sz\u00e1rmaz\u00e9kos munk\u00e1t, amelyet GPL licenc alatt kell terjeszteni.<\/p>\n

Az egyetlen lehet\u0151s\u00e9g, amely mellett Linus elfogadn\u00e1 a ZFS k\u00f3dj\u00e1t a f\u0151 kernelbe, az, ha az Oracle c\u00e9gt\u0151l hivatalos enged\u00e9lyt kap, amelyet a c\u00e9g f\u0151 jog\u00e1sza, vagy jobb esetben maga Larry Ellison \u00edr al\u00e1. K\u00f6ztes megold\u00e1sok, mint p\u00e9ld\u00e1ul a kernel \u00e9s a ZFS k\u00f3d k\u00f6z\u00f6tti r\u00e9tegek, elfogadhatatlanok, figyelembe v\u00e9ve az Oracle agressz\u00edv politik\u00e1j\u00e1t a programoz\u00e1si interf\u00e9szek szellemi tulajdonjog\u00e1val kapcsolatban (p\u00e9ld\u00e1ul a peresked\u00e9s<\/a><\/noindex> Google-lal a Java API \u00fcgy\u00e9ben). Ezen k\u00edv\u00fcl Linus \u00fagy v\u00e9li, hogy a ZFS haszn\u00e1lat\u00e1ra val\u00f3 t\u00f6rekv\u00e9s ink\u00e1bb divat, mintsem technikai el\u0151ny. A teljes\u00edtm\u00e9nytesztek, amelyeket Linus tanulm\u00e1nyozott, nem a ZFS mellett tan\u00faskodnak, \u00e9s a megfelel\u0151 t\u00e1mogat\u00e1s hi\u00e1nya nem garant\u00e1lja a tart\u00f3s stabilit\u00e1st.<\/p>\n

Eml\u00e9keztet\u00fcnk arra, hogy a ZFS k\u00f3dja szabad licenc alatt, CDDL alatt ker\u00fcl forgalomba, ami nem kompatibilis a GPLv2-vel, \u00e9s \u00edgy nem lehet el\u00e9rni, hogy a ZFS on Linux integr\u00e1l\u00f3djon a Linux kernel f\u0151 \u00e1gba, mivel a GPLv2 \u00e9s a CDDL alatti k\u00f3dok \u00f6sszekever\u00e9se nem megengedett. A licenc inkompatibilit\u00e1s megker\u00fcl\u00e9s\u00e9re a \"ZFS on Linux\" projekt \u00fagy d\u00f6nt\u00f6tt, hogy a term\u00e9ket teljes eg\u00e9sz\u00e9ben CDDL licenc alatt, k\u00fcl\u00f6n let\u00f6lthet\u0151 modul form\u00e1j\u00e1ban terjeszti, amely k\u00fcl\u00f6n a kernelt\u0151l \u00e9rkezik. <\/p>\n

A ZFS k\u00e9sz modul\u00e1nak disztrib\u00faci\u00f3kban val\u00f3 terjeszt\u00e9se jogi vit\u00e1kat v\u00e1lt ki. A Software Freedom Conservancy (SFC) jog\u00e1szai \u00fagy v\u00e9lik<\/a><\/noindex>, hogy a disztrib\u00faci\u00f3ban a bin\u00e1ris kernel modul sz\u00e1ll\u00edt\u00e1sa egy GPL-alap\u00fa term\u00e9ket k\u00e9pez, amely a v\u00e9gterm\u00e9k GPL alatti terjeszt\u00e9s\u00e9t k\u00f6veteli meg. A Canonical jog\u00e1szai nem \u00e9rt egyet.<\/a><\/noindex> \u00e9s azt \u00e1ll\u00edtj\u00e1k, hogy a zfs modul sz\u00e1ll\u00edt\u00e1sa megengedett, ha az \u00f6n\u00e1ll\u00f3 modulk\u00e9nt van sz\u00e1ll\u00edtva, k\u00fcl\u00f6n a kernel csomagt\u00f3l. A Canonical megjegyzi, hogy a disztrib\u00faci\u00f3k r\u00e9g\u00f3ta haszn\u00e1lj\u00e1k ezt a megk\u00f6zel\u00edt\u00e9st a tulajdonosi driverek, p\u00e9ld\u00e1ul az NVIDIA driverek sz\u00e1ll\u00edt\u00e1s\u00e1ra. <\/p>\n

A m\u00e1sik f\u00e9l \u00e9rvel\u00e9se az, hogy a tulajdonosi driverek kernelhez val\u00f3 kompatibilit\u00e1s\u00e1nak probl\u00e9m\u00e1ja egy kis r\u00e9teg sz\u00e1ll\u00edt\u00e1s\u00e1val oldhat\u00f3 meg, amely GPL licenc alatt van (a kernelbe egy GPL licenc alatt \u00e1ll\u00f3 modult t\u00f6ltenek be, amely m\u00e1r bet\u00f6lti a tulajdonosi \u00f6sszetev\u0151ket). A ZFS sz\u00e1m\u00e1ra hasonl\u00f3 r\u00e9teg csak akkor k\u00e9sz\u00edthet\u0151 el, ha az Oracle c\u00e9gt\u0151l licenc kiv\u00e9teleket kapunk. Az Oracle Linux-ban a GPL-hez val\u00f3 inkompatibilit\u00e1s megold\u00e1s\u00e1ra az Oracle v\u00e1llalat licenc kiv\u00e9teleket ad, amelyek feloldj\u00e1k a CDDL alatti kombin\u00e1lt munka licencel\u00e9si k\u00f6vetelm\u00e9nyeit, de ez a kiv\u00e9tel nem \u00e9rv\u00e9nyes m\u00e1s disztrib\u00faci\u00f3kra. <\/p>\n

A megker\u00fcl\u0151 megold\u00e1s az, ha a disztrib\u00faci\u00f3ban csak a modul forr\u00e1sk\u00f3dj\u00e1t sz\u00e1ll\u00edtj\u00e1k, amely nem vezet \u00f6sszekapcsol\u00e1shoz, \u00e9s k\u00e9t k\u00fcl\u00f6n term\u00e9k sz\u00e1ll\u00edt\u00e1s\u00e1nak sz\u00e1m\u00edt. A Debianban ehhez a DKMS (Dynamic Kernel Module Support) rendszert haszn\u00e1lj\u00e1k, amelyben a modul forr\u00e1sk\u00f3d form\u00e1j\u00e1ban ker\u00fcl sz\u00e1ll\u00edt\u00e1sra \u00e9s a felhaszn\u00e1l\u00f3 rendszere \u00e9p\u00edti fel k\u00f6zvetlen\u00fcl a csomag telep\u00edt\u00e9se ut\u00e1n.<\/p>\n

<\/a><\/noindex><\/p>\n

Forr\u00e1s: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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\u043d\u0435\u0434\u0430\u0432\u043d\u0438\u0435 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u0432 \u044f\u0434\u0440\u0435 \u043d\u0430\u0440\u0443\u0448\u0438\u043b\u0438 \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u043d\u0443\u044e \u0440\u0430\u0431\u043e\u0442\u0443 \u043c\u043e\u0434\u0443\u043b\u044f «ZFS on Linux«. \u041b\u0438\u043d\u0443\u0441 \u0422\u043e\u0440\u0432\u0430\u043b\u044c\u0434\u0441 \u043e\u0442\u0432\u0435\u0442\u0438\u043b, \u0447\u0442\u043e \u043f\u0440\u0438\u043d\u0446\u0438\u043f «\u043d\u0435 \u043b\u043e\u043c\u0430\u0442\u044c \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439» \u043e\u0442\u043d\u043e\u0441\u0438\u0442\u0441\u044f \u043a \u0441\u043e\u0445\u0440\u0430\u043d\u0435\u043d\u0438\u044e \u0432\u043d\u0435\u0448\u043d\u0438\u0445 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441\u043e\u0432 \u044f\u0434\u0440\u0430, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u043c\u044b\u0445 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f\u043c\u0438 \u0432 \u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u0441\u0442\u0432\u0435 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f, […]<\/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-55018","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 kifejtette, mik a ZFS Linux kernelbe val\u00f3 implement\u00e1l\u00e1s\u00e1nak probl\u00e9m\u00e1i | ProHoster","description":"A feladat\u00fctemez\u0151 tesztjeinek megvitat\u00e1sa 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