{"id":105750,"date":"2022-11-29T03:36:40","date_gmt":"2022-11-29T01:36:40","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/dlya-linux-predlozhena-fajlovaya-sistema-composefs"},"modified":"2022-11-29T03:36:40","modified_gmt":"2022-11-29T01:36:40","slug":"dlya-linux-predlozhena-fajlovaya-sistema-composefs","status":"publish","type":"post","link":"https:\/\/prohoster.info\/lv\/blog\/news\/dlya-linux-predlozhena-fajlovaya-sistema-composefs","title":{"rendered":"Linux ir pied\u0101v\u0101ta failu sist\u0113ma Composefs","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"
Aleksandrs L\u0101rsons (Alexander Larsson), Flatpak rad\u012bt\u0101js, kas str\u0101d\u0101 uz\u0146\u0113mum\u0101 Red Hat, ir iepaz\u012bstin\u0101jis ar iepriek\u0161\u0113jo p\u0101rbau\u017eu variantu, kas satur Composefs failu sist\u0113mas \u012bsteno\u0161anu Linux kodol\u0101. Ieteikt\u0101 failu sist\u0113ma atg\u0101dina Squashfs un ir piem\u0113rota ar\u012b att\u0113lu mont\u0113\u0161anai tikai las\u012b\u0161anas re\u017e\u012bm\u0101. At\u0161\u0137ir\u012bbas ir saist\u012btas ar to, ka Composefs nodro\u0161ina efekt\u012bvu vair\u0101ku mont\u0113tu diska att\u0113lu satura kop\u012bgu glab\u0101\u0161anu un atbalsta autentifik\u0101ciju las\u012b\u0161anas datos. K\u0101l\u0101s jom\u0101s, kur\u0101s var\u0113tu b\u016bt piepras\u012bta Composefs failsist\u0113ma, tiek min\u0113ta konteineru att\u0113lu mont\u0113\u0161ana un izmanto\u0161ana Git l\u012bdz\u012bg\u0101m OSTree repozitorij\u0101m. <\/p>\n
Composefs izmanto satur\u0101 balst\u012btu adres\u0113\u0161anas uzglab\u0101\u0161anas modeli, t.i., prim\u0101rais identifikators nav faila nosaukums, bet gan hash no faila satura. \u0160\u0101ds modelis nodro\u0161ina datu deduplication un \u013cauj faktiski uzglab\u0101t tikai vienu kopiju identiskiem failiem, kas sastopami da\u017e\u0101d\u0101s mont\u0113taj\u0101s noda\u013c\u0101s. Piem\u0113ram, konteineru att\u0113li satur daudzas standarta sist\u0113mas failus, un, ja tiek izmantots Composefs, katrs no \u0161iem failiem tiks koplietots visiem mont\u0113tajiem att\u0113liem, bez triku izmanto\u0161anas, piem\u0113ram, izmantojot ciet\u0101s saites. Turkl\u0101t koplietotie faili tiek uzglab\u0101ti k\u0101 vienk\u0101r\u0161a kopija disk\u0101 un rad\u012bju\u0161i tikai vienu ierakstu lapu ke\u0161\u0101, kas \u013cauj ietaup\u012bt gan diskus, gan operat\u012bvo atmi\u0146u. <\/p>\n
Lai ietaup\u012btu diska atmi\u0146u, dati un metadati mont\u0113tajos att\u0113los ir atdal\u012bti. Mont\u0113\u0161anas laik\u0101 tiek nor\u0101d\u012bti: <\/p>\n
\n
Bin\u0101rais indekss, kur\u0101 ir visa failu sist\u0113mas metadati, failu nosaukumi, piek\u013cuves ties\u012bbas un citi dati, iz\u0146emot faktisko failu saturu.\n
Pamatz\u012bmju katalogs, kur\u0101 tiek uzglab\u0101ts visu mont\u0113to att\u0113lu failu saturs. Faili tiek uzglab\u0101ti sasaist\u0113 ar to satura hash. <\/ul>\n
Bin\u0101rais indekss tiek izveidots katram failu sist\u0113mas (FS) att\u0113lam, un pamatkatalogs ir vienots visiem att\u0113liem. Failu un visa att\u0113la satura verifik\u0101cijai kop Shared storage apst\u0101k\u013cos var tikt izmantots fs-verity meh\u0101nisms, kas piek\u013c\u016bst failiem, p\u0101rbaudot, vai bin\u0101raj\u0101 indeks\u0101 nor\u0101d\u012btie hashi atbilst faktiskajam saturam (t.i., ja uzbrukuma veic\u0113js veiks izmai\u0146as fail\u0101 pamatkatalog\u0101 vai dati tiks boj\u0101ti k\u013c\u016bmes rezult\u0101t\u0101, \u0161\u0101da sal\u012bdzin\u0101\u0161ana atkl\u0101s neatbilst\u012bbu). \n Avots: opennet.lv<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"