{"id":34664,"date":"2019-10-31T21:59:41","date_gmt":"2019-10-31T18:59:41","guid":{"rendered":"https:\/\/prohoster.info\/blog\/zfsonlinux-0-8-fichi-stabilizatsiya-intrigi-nu-i-trim\/"},"modified":"2019-10-31T21:59:41","modified_gmt":"2019-10-31T18:59:41","slug":"zfsonlinux-0-8-fichi-stabilizatsiya-intrigi-nu-i-trim","status":"publish","type":"post","link":"https:\/\/prohoster.info\/ro\/blog\/administrirovanie\/zfsonlinux-0-8-fichi-stabilizatsiya-intrigi-nu-i-trim","title":{"rendered":"ZFSonLinux 0.8: caracteristici, stabilizare, intrigi. \u0218i trim","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Aproape de cur\u00e2nd a fost lansat\u0103 o nou\u0103 versiune stabil\u0103 a ZFSonLinux, un proiect care acum este central \u00een dezvoltarea OpenZFS. La revedere, OpenSolaris, bun venit \u00een lumea dur\u0103 \u0219i incompatibil\u0103 GPL-CDDL a Linux-ului.<\/p>\n

\"ZFSonLinux
\nSub titlu, o recenzie a celor mai interesante lucruri (ce altceva, 2200<\/u> commits!), iar la final \u2014 pu\u021bin intrigant.
\n<\/a><\/noindex><\/p>\n

Nout\u0103\u021bi<\/h3>\n

\nDesigur, cea mai a\u0219teptat\u0103 \u2014 criptarea nativ\u0103<\/b>. Acum po\u021bi cripta doar seturile de date necesare cu criptarea integrat\u0103 \u00een ZFS, \u0219i (din punctul meu de vedere \u2014 cel mai important) \u2014 po\u021bi trimite datele criptate prin zfs send<\/i> \u0219i f\u0103r\u0103 decriptare verifica integritatea datelor cu instrumentele integrate, toate func\u021bionalit\u0103\u021bile de p\u0103strare a integrit\u0103\u021bii datelor ZFS vor fi la dispozi\u021bia ta!<\/p>\n

Urm\u0103toarea la importan\u021b\u0103 este men\u021bionat\u0103 TRIM<\/b>. Da, a durat foarte mult p\u00e2n\u0103 s\u0103 ajung\u0103 \u00een produc\u021bie. Par\u021bial pentru c\u0103 problema uzurii SSD-urilor nu este at\u00e2t de critic\u0103 pentru sistemele de fi\u0219iere CoW. Dar acum suntem cu to\u021bii lini\u0219ti\u021bi \u2014 zpool trim <\/i>va salva sensitivit\u0103\u021bile noastre flash.<\/p>\n

Acum po\u021bi \u0219terge<\/b> matricele vdev ad\u0103ugate accidental din pool (dar doar dac\u0103 sunt sparse sau mirror). O mic\u0103 utilitate.<\/p>\n

Urm\u0103toarea pe lista noastr\u0103 este checkpoint-urile pool-ului<\/b>. Pe scurt \u2014 snapshot-uri pentru \u00eentreaga stare a pool-ului, DAR oferind posibilitatea de a reveni asupra modific\u0103rilor nu doar ale datelor, ci \u0219i ale caracteristicilor incluse \u00een pool \u0219i ale modific\u0103rilor structurale. O alt\u0103 modalitate de a te proteja.<\/p>\n

Ini\u021bializarea pool-ului <\/b> \u2014 umplerea stoc\u0103rii de baz\u0103 cu zerouri. Util\u0103 pentru lucrul \u00een medii cu discuri thin provisioned pentru a aloca explicit spa\u021biu \u0219i a exclude sc\u0103derile nea\u0219teptate de performan\u021b\u0103 ulterior.<\/p>\n

Contabilitatea proiectului \u0219i cotele<\/b> \u2014 \u00een mecanismul de cote existent acum este posibil s\u0103 se utilizeze \u00eemp\u0103r\u021birea pe proiecte.<\/p>\n

Programele canalelor<\/b> \u2014 capacitatea de a efectua sarcini administrative atomic prin intermediul scripturilor Lua. Exist\u0103 limite de timp de execu\u021bie \u0219i memorie. Dac\u0103 te ocupi de automatizare \u2014 atunci acesta este pentru tine.<\/p>\n

Direct IO<\/b> \u2014 pentru simplificare, a fost adus\u0103 func\u021bionarea Direct IO, din interior nimic nu s-a schimbat (doar apelurile se fac maxim ocolind cache-ul), dar acum software-ul care vrea s\u0103 func\u021bioneze \u00een acest mod nu se va mai pl\u00e2nge.<\/p>\n

Proiect Pyzfs<\/b> a fost integrat \u00een principalul depozit \u0219i a fost preluat sub aripa proiectului ZFSonLinux. Acum sunt mai multe instrumente pentru gestionare din Python (\u0219i va fi mai lini\u0219tit pentru suportul modulului). De asemenea, multe scripturi Python au fost adaptate pentru Python3.<\/p>\n

\u0218i acum, ce este mai bun \u2014 performan\u021ba<\/h4>\n

\nAcum, \u00een timpul opera\u021biunilor de scrub \u0219i resilver, mai \u00eent\u00e2i se citesc metadatele, iar apoi, \u00een mod secven\u021bial, datele. Astfel, restaurarea array-ului \u0219i verificarea integrit\u0103\u021bii se desf\u0103\u0219oar\u0103 cu cea mai mare vitez\u0103. secven\u021bial<\/b> \u00eentr-o manier\u0103. Aceasta permite o recuperare rapid\u0103 a array-ului \u0219i verificarea integrit\u0103\u021bii.<\/p>\n

Clase de alocare<\/b> \u2014 pentru array-urile vdev a ap\u0103rut un nou tip de suport, acum se pot stoca metadatele\/tablourile de deduplicare (DDT)\/blocurile de date mai mici de X Kbyte pe un array vdev separat, din discuri mai performante. Mai mult\u0103 vitez\u0103 pentru Dumnezeu vitez\u0103!<\/u> (\u0219i, de fapt, aceast\u0103 capacitate va fi foarte util\u0103 \u00een viitor DRAID<\/a><\/noindex>).<\/p>\n

Multe comenzi administrative func\u021bioneaz\u0103 acum mai repede, datorit\u0103 cache-ului punctual pentru metadate (de exemplu, zfs list, zfs get<\/i>).<\/p>\n

Procesul de alocare a datelor a fost paralelizat<\/b>, acum pentru fiecare zon\u0103 de spa\u021biu liber (metaslab) se creeaz\u0103 mai mul\u021bi alocatori. Cu NVMe, desigur, nu se va extrage totul, dar va fi mai bine.<\/p>\n

Restaurarea \u00eent\u00e2rziat\u0103 a integrit\u0103\u021bii<\/b> array-ului va permite evitarea suprasarcinii array-ului prin reconstruc\u021bia simultan\u0103 a mai multor discuri, ci se va face \u00een mod secven\u021bial. Astfel, se va reduce at\u00e2t impactul asupra performan\u021bei, c\u00e2t \u0219i timpul de reconstruc\u021bie.<\/p>\n

La importarea pool-urilor cu un num\u0103r mare de volumes<\/b> a fost crescut\u0103 viteza de \u00eenregistrare \u00een sistem.<\/p>\n

De asemenea, QAT<\/b> permite acum desc\u0103rcarea calculelor pentru criptare \u0219i checksum-uri.<\/p>\n

\u00cen plus, o mul\u021bime de modific\u0103ri minore (peste 2000+ de commit-uri \u00een versiunea!).<\/a><\/noindex><\/p>\n

\u0218i, ca desert \u2014 intrigi<\/h3>\n

\nDe\u0219i ZFSonLinux adaug\u0103 rapid suport pentru kerneluri Linux recente (\u00een prezent sunt acceptate versiunile 2.6.32 \u2014 5.1*), mentenan\u021bii kernelului \u00ee\u0219i manifest\u0103 o clar\u0103 lips\u0103 de interes \u00een ajutorul modulelor externe (\u201e\u2026nu ne pas\u0103 deloc despre
\nmodule externe ale kernelului\u2026<\/a><\/noindex> \u2014 greg k-h\u201d). Astfel, apelurile necesare pentru o func\u021bionare eficient\u0103 \u00een ramura 5.0 la GPL-only <\/a><\/noindex>. \u00cen kernel-urile cu acest patch, performan\u021ba ZFS va fi semnificativ mai slab\u0103. Se salveaz\u0103 faptul c\u0103 aceast\u0103 func\u021bionalitate poate fi implementat\u0103 din partea modulului, ceea ce probabil se va face. \u00centre timp, pute\u021bi lua exemplul de la NixOS \u2014 ei pur \u0219i simplu au revenit la patch-ul din kernel<\/a><\/noindex> \ud83d\ude42<\/p>\n

De asemenea, proiectul a implementat un Cod de Conduit\u0103, ceea ce a generat valuri de controvers\u0103. Dar ne-am men\u021binut \ud83d\ude42<\/p>\n

V\u0103 ur\u0103m back-up-uri func\u021bionale \u0219i versiuni stabile!<\/p>\n

Linkuri utile:
\n \u2014 versiunea pe Github<\/a><\/noindex>
\n \u2014 introducerea mea \u00een ZFS<\/a><\/noindex>
\n
Sursa: habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0411\u0443\u043a\u0432\u0430\u043b\u044c\u043d\u043e \u043d\u0430 \u0434\u043d\u044f\u0445 \u0440\u0435\u043b\u0438\u0437\u043d\u0443\u043b\u0438 \u0441\u0432\u0435\u0436\u0443\u044e stable \u0432\u0435\u0440\u0441\u0438\u044e ZFSonLinux, \u043f\u0440\u043e\u0435\u043a\u0442\u0430, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0442\u0435\u043f\u0435\u0440\u044c \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0446\u0435\u043d\u0442\u0440\u0430\u043b\u044c\u043d\u044b\u043c \u0432 \u043c\u0438\u0440\u0435 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 OpenZFS. \u041f\u0440\u043e\u0449\u0430\u0439, OpenSolaris, \u0437\u0434\u0440\u0430\u0432\u0441\u0442\u0432\u0443\u0439 \u0441\u0432\u0438\u0440\u0435\u043f\u044b\u0439 GPL-CDDL \u043d\u0435\u0441\u043e\u0432\u043c\u0435\u0441\u0442\u0438\u043c\u044b\u0439 \u043c\u0438\u0440 Linux. \u041f\u043e\u0434 \u043a\u0430\u0442\u043e\u043c \u043e\u0431\u0437\u043e\u0440 \u0441\u0430\u043c\u044b\u0445 \u0438\u043d\u0442\u0435\u0440\u0435\u0441\u043d\u044b\u0445 \u0432\u0435\u0449\u0435\u0439 (\u0435\u0449\u0451 \u0431\u044b, 2200 \u043a\u043e\u043c\u043c\u0438\u0442\u043e\u0432!), \u0430 \u043d\u0430 \u0434\u0435\u0441\u0435\u0440\u0442 \u2014 \u043d\u0435\u043c\u043d\u043e\u0433\u043e \u0438\u043d\u0442\u0440\u0438\u0433. \u041d\u043e\u0432\u044b\u0435 \u0444\u0438\u0448\u043a\u0438 \u041a\u043e\u043d\u0435\u0447\u043d\u043e \u0436\u0435, \u0441\u0430\u043c\u0430\u044f \u043e\u0436\u0438\u0434\u0430\u0435\u043c\u0430\u044f \u2014 \u043d\u0430\u0442\u0438\u0432\u043d\u043e\u0435 \u0448\u0438\u0444\u0440\u043e\u0432\u0430\u043d\u0438\u0435. \u0422\u0435\u043f\u0435\u0440\u044c \u043c\u043e\u0436\u043d\u043e \u0437\u0430\u0448\u0438\u0444\u0440\u043e\u0432\u0430\u0442\u044c \u0442\u043e\u043b\u044c\u043a\u043e \u043d\u0443\u0436\u043d\u044b\u0435 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":26117,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-34664","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-administrirovanie"],"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\udd47ZFSonLinux 0.8: caracteristici, stabilizare, intrigi. \u0218i trim | ProHoster","description":"Recent a fost lansat\u0103 o nou\u0103 versiune stabil\u0103 a ZFSonLinux, un proiect care acum este central \u00een dezvoltarea 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