{"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\/sv\/blog\/administrirovanie\/zfsonlinux-0-8-fichi-stabilizatsiya-intrigi-nu-i-trim","title":{"rendered":"ZFSonLinux 0.8: funktioner, stabilisering, intriger. Ja, och trim","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Nyligen sl\u00e4ppte vi den senaste stabila versionen av ZFSonLinux, projektet som nu \u00e4r centralt i utvecklingen av OpenZFS. Hejd\u00e5 OpenSolaris, v\u00e4lkommen till den obarmh\u00e4rtiga GPL-CDDL-inkompatibla v\u00e4rlden av Linux.<\/p>\n

\"ZFSonLinux
\nUnder ytan finns en \u00f6versikt \u00f6ver de mest intressanta sakerna (sj\u00e4lvklart, 2200<\/u> commits!), och som efterr\u00e4tt \u2014 lite sp\u00e4nning.
\n<\/a><\/noindex><\/p>\n

Nya funktioner<\/h3>\n

\nSj\u00e4lvklart \u00e4r den mest efterl\u00e4ngtade \u2014 inbyggd kryptering<\/b>. Nu kan du kryptera endast de dataset som beh\u00f6vs med den inbyggda krypteringen i ZFS, och (enligt mig \u2014 det viktigaste) \u2014 du kan skicka krypterade data via zfs send<\/i> och UTAN att dekryptera kontrollera dataintegriteten med inbyggda verktyg, alla m\u00f6jligheter f\u00f6r att bevara dataintegriteten i ZFS kommer att finnas tillg\u00e4ngliga f\u00f6r dig!<\/p>\n

N\u00e4sta i betydelse \u00e4r den l\u00e4nge f\u00f6rv\u00e4ntade TRIM<\/b>Ja, han tog v\u00e4ldigt l\u00e5ng tid att n\u00e5 produktionen. Delvis f\u00f6r att slitaget p\u00e5 SSD-diskar inte \u00e4r ett s\u00e5 stort problem f\u00f6r CoW-filsystem. Men nu \u00e4r vi alla lugna \u2014 zpool trim <\/i>kommer att r\u00e4dda v\u00e5ra \u00f6mt\u00e5liga flash-enheter.<\/p>\n

Nu kan man ta bort<\/b> av misstag tillagda vdev-arrayer fr\u00e5n poolen (men bara om det \u00e4r sparse eller mirror). En anv\u00e4ndbar liten funktion.<\/p>\n

D\u00e4refter i v\u00e5r topplista \u2014 pool checkpoints<\/b>. Kort sagt \u2014 snapshots f\u00f6r hela poolens tillst\u00e5nd, MEN som ger m\u00f6jlighet att \u00e5terst\u00e4lla \u00e4ndringar inte bara av data, utan ocks\u00e5 av aktiverade funktioner p\u00e5 poolen och strukturella f\u00f6r\u00e4ndringar. Ytterligare en m\u00f6jlighet att s\u00e4kra sig.<\/p>\n

Pool initialization <\/b> \u2014 fyllning av det underliggande lagringsutrymmet med nollor. Anv\u00e4ndbart f\u00f6r arbete i milj\u00f6er med thin provisioned diskar f\u00f6r tydlig allokering av utrymme och f\u00f6r att undvika ov\u00e4ntade nedg\u00e5ngar i prestanda senare.<\/p>\n

Project accounting and quota<\/b> \u2014 i den redan befintliga kvotsystemet \u00e4r det nu m\u00f6jligt att anv\u00e4nda projektindelning.<\/p>\n

Channel programs<\/b> \u2014 m\u00f6jlighet att utf\u00f6ra administrativa uppgifter atom\u00e4rt med hj\u00e4lp av Lua-skript. Det finns begr\u00e4nsningar f\u00f6r k\u00f6rtid och minne. Om du arbetar med automatisering \u2014 d\u00e5 \u00e4r detta f\u00f6r dig.<\/p>\n

Direct IO<\/b> \u2014 f\u00f6r enkelhetens skull integrerade vi Direct IO-arbetet, i grunden har inget f\u00f6r\u00e4ndrats (anrop g\u00f6rs maximalt f\u00f6rbi cachen), men nu kommer programvara som vill arbeta i detta l\u00e4ge inte att klaga.<\/p>\n

Projektet Pyzfs<\/b> \u00e4r inskrivet i det prim\u00e4ra arkivet och har tagits under ZFSonLinux-projektets vingar. Nu finns det fler verktyg f\u00f6r att hantera fr\u00e5n Python (och st\u00f6d f\u00f6r modulen kommer att k\u00e4nnas tryggare). M\u00e5nga Python-skript har ocks\u00e5 anpassats till Python3.<\/p>\n

Och nu till det goda \u2014 prestanda<\/h4>\n

\nNu l\u00e4ses metadata f\u00f6rst vid scrub- och resilver-operationer, och sedan i maximalt sekventiell<\/b> form \u2014 data. Detta g\u00f6r att \u00e5terst\u00e4llning av arrayen och kontroll av integritet sker med maximal hastighet.<\/p>\n

Allokeringsklasser<\/b> \u2014 vdev-arrayer har f\u00e5tt en typ av lagringsmedium, nu kan lagring av metadata\/dedupliceringstabeller (DDT)\/datablock p\u00e5 mindre \u00e4n X KByte flyttas till en separat vdev-array med mer prestandakraft. Mer hastighet till hastighetens gud!<\/u> (och i praktiken \u2014 denna m\u00f6jlighet kommer att vara mycket anv\u00e4ndbar i framtiden DRAID<\/a><\/noindex>).<\/p>\n

M\u00e5nga administrativa kommandon fungerar nu snabbare tack vare punktcache av metadata (till exempel, zfs list, zfs get<\/i>).<\/p>\n

Dataallokeringsprocessen \u00e4r nu parallelliserad<\/b>, nu skapas flera allokerare f\u00f6r varje segment av ledigt utrymme (metaslab). Med NVMe kommer allt inte att pressas ut, men det blir b\u00e4ttre.<\/p>\n

F\u00f6rdr\u00f6jd integritets\u00e5terst\u00e4llning<\/b> av arrayen kommer att f\u00f6rhindra att arrayen belastas av samtidig \u00e5terskapande av flera diskar, utan kommer att g\u00f6ra det sekventiellt. Detta minskar b\u00e5de p\u00e5verkan p\u00e5 prestanda och tiden f\u00f6r \u00e5terskapande.<\/p>\n

Vid import av pooler med m\u00e5nga volumes<\/b> \u00f6kar hastigheten f\u00f6r deras registrering i systemet.<\/p>\n

\u00c4ven QAT<\/b> till\u00e5ter nu avlastning av kryptering och checksumber\u00e4kning.<\/p>\n

Plus massor av sm\u00e5 f\u00f6r\u00e4ndringar (\u00f6ver 2000 commit i releasen!).<\/a><\/noindex><\/p>\n

Och till dessert \u2014 intriger<\/h3>\n

\n\u00c4ven om ZFSonLinux snabbt l\u00e4gger till st\u00f6d f\u00f6r nya Linux-k\u00e4rnor (just nu st\u00f6ds versioner 2.6.32 \u2014 5.1*), visar k\u00e4rnmaintainers tydlig brist p\u00e5 intresse f\u00f6r att hj\u00e4lpa externa moduler (\"\u2026vi bryr oss \u00f6verhuvudtaget inte om
\nexterna k\u00e4rnmoduler\u2026<\/a><\/noindex> \u2014 greg k-h\"). D\u00e4rf\u00f6r kr\u00e4vs de systemanrop som beh\u00f6vs f\u00f6r att arbeta effektivt i version 5.0. \u00e4ndrade till GPL-endast <\/a><\/noindex>. I k\u00e4rnor med denna patch kommer ZFS-prestandan att vara betydligt s\u00e4mre. Det r\u00e4ddar att denna funktionalitet kan implementeras p\u00e5 modulens sida, vilket troligen kommer att g\u00f6ras. Under tiden kan ni ta exempel fr\u00e5n NixOS \u2014 de bara rullade tillbaka patchen i k\u00e4rnan<\/a><\/noindex> \ud83d\ude42<\/p>\n

Projektet har ocks\u00e5 nu f\u00e5tt en Code of Conduct, vilket har skapat en v\u00e5g av kontroverser. Men vi har st\u00e5tt emot \ud83d\ude42<\/p>\n

\u00d6nskar er alla fungerande backuper och stabila releaser!<\/p>\n

Nyttiga l\u00e4nkar:
\n \u2014 release p\u00e5 Github<\/a><\/noindex>
\n \u2014 min introduktion till ZFS<\/a><\/noindex>
\n
K\u00e4lla: 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\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: funktioner, stabilisering, intriger. 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