{"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\/cs\/blog\/administrirovanie\/zfsonlinux-0-8-fichi-stabilizatsiya-intrigi-nu-i-trim","title":{"rendered":"ZFSonLinux 0.8: funkce, stabilizace, intriky. A trim","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Doslova p\u0159ed n\u011bkolika dny byla vyd\u00e1na nov\u00e1 stabiln\u00ed verze ZFSonLinux, projektu, kter\u00fd se nyn\u00ed stal centr\u00e1ln\u00edm bodem ve sv\u011bt\u011b v\u00fdvoje OpenZFS. Sbohem, OpenSolaris, v\u00edtejte v drsn\u011b neslu\u010diteln\u00e9 GPL-CDDL sv\u011bt\u011b Linuxu.<\/p>\n

\"ZFSonLinux
\nPod t\u00edmto odkazu je p\u0159ehled t\u011bch nejzaj\u00edmav\u011bj\u0161\u00edch v\u011bc\u00ed (jak jinak, 2200<\/u> komit\u016f!), a jako dezert \u2014 trocha intrik.
\n<\/a><\/noindex><\/p>\n

Nov\u00e9 funkce<\/h3>\n

\nSamoz\u0159ejm\u011b, \u017ee nejv\u00edce o\u010dek\u00e1vanou je nativn\u00ed \u0161ifrov\u00e1n\u00ed<\/b>. Nyn\u00ed je mo\u017en\u00e9 \u0161ifrovat pouze pot\u0159ebn\u00e9 datov\u00e9 sady zabudovan\u00fdm \u0161ifrov\u00e1n\u00edm ZFS, a (podle m\u011b \u2014 hlavn\u011b) \u2014 m\u016f\u017eete pos\u00edlat \u0161ifrovan\u00e1 data p\u0159es zfs send<\/i> a BEZ de\u0161ifrov\u00e1n\u00ed zkontrolovat integritu dat zabudovan\u00fdmi prost\u0159edky, v\u0161echny mo\u017enosti ochrany integrity dat ZFS z\u016fstanou u v\u00e1s!<\/p>\n

D\u00e1le v d\u016fle\u017eitosti stoj\u00ed zm\u00ednit dlouho o\u010dek\u00e1van\u00e9 TRIM<\/b>Ano, dostal se do produkce velmi dlouho. \u010c\u00e1ste\u010dn\u011b proto, \u017ee u CoW souborov\u00fdch syst\u00e9m\u016f nen\u00ed probl\u00e9m s opot\u0159eben\u00edm SSD tak kritick\u00fd. Ale nyn\u00ed jsme v\u0161ichni klidn\u00ed \u2014 zpool trim <\/i>zachr\u00e1n\u00ed na\u0161e citliv\u00e9 flashky.<\/p>\n

Nyn\u00ed je mo\u017en\u00e9 odstra\u0148ov\u00e1n\u00ed<\/b> n\u00e1hodn\u011b p\u0159idan\u00fdch vdev pol\u00ed z poolu (ale jen, pokud jde o sparse nebo mirror). U\u017eite\u010dn\u00e1 drobnost.<\/p>\n

D\u00e1le v na\u0161em hitpar\u00e1d\u011b \u2014 pool checkpoints<\/b>. Stru\u010dn\u011b \u2014 sn\u00edmky pro cel\u00e9 stavy poolu, ALE umo\u017e\u0148uj\u00ed vr\u00e1tit zm\u011bny nejen dat, ale i aktivovan\u00fdch funkc\u00ed a zm\u011bn ve struktu\u0159e poolu. Dal\u0161\u00ed mo\u017enost, jak se zabezpe\u010dit.<\/p>\n

Pool initialization <\/b> \u2014 vypln\u011bn\u00ed spodn\u00edho \u00falo\u017ei\u0161t\u011b nulami. U\u017eite\u010dn\u00e9 pro pr\u00e1ci v prost\u0159ed\u00edch s thin provisioned disky pro jasn\u00e9 vymezen\u00ed prostoru a vylou\u010den\u00ed ne\u010dekan\u00fdch pokles\u016f v\u00fdkonu v budoucnu.<\/p>\n

Project accounting and quota<\/b> \u2014 v ji\u017e existuj\u00edc\u00edm mechanismu kv\u00f3t je nyn\u00ed mo\u017en\u00e9 pou\u017e\u00edt rozd\u011blen\u00ed na projekty.<\/p>\n

Channel programs<\/b> \u2014 mo\u017enost prov\u00e1d\u011bt administrativn\u00ed \u00fakoly atom\u00e1rn\u011b pomoc\u00ed Lua skript\u016f. Existuj\u00ed omezen\u00ed na \u010das prov\u00e1d\u011bn\u00ed a pam\u011b\u0165. Pokud se zab\u00fdv\u00e1te automatizac\u00ed \u2014 tohle je pro v\u00e1s.<\/p>\n

Priamine IO<\/b> \u2014 pro jednoduchost jsme zapracovali pr\u00e1ci s Direct IO, uvnit\u0159 se nic nezm\u011bnilo (v podstat\u011b vol\u00e1n\u00ed jdou maxim\u00e1ln\u011b mimo cache), ale nyn\u00ed douf\u00e1m, \u017ee software, kter\u00fd chce pracovat v tomto re\u017eimu, nebude m\u00edt starosti.<\/p>\n

Projekt Pyzfs<\/b> byl integrov\u00e1n do hlavn\u00edho repozit\u00e1\u0159e a vzat pod k\u0159\u00eddlo projektu ZFSonLinux. Nyn\u00ed je zde v\u00edce prost\u0159edk\u016f pro spr\u00e1vu z Pythonu (no a tak\u00e9 bude klidn\u011bj\u0161\u00ed ohledn\u011b podpory modulu). Tak\u00e9 mnoh\u00e9 Python skripty byly p\u0159izp\u016fsobeny pro Python3.<\/p>\n

A te\u010f na to zaj\u00edmav\u00e9 \u2014 v\u00fdkonnost<\/h4>\n

\nNyn\u00ed p\u0159i operac\u00edch scrub a resilver se nejprve p\u0159e\u010dtou metadata a teprve potom v maxim\u00e1ln\u00ed sekven\u010dn\u00edho<\/b> podob\u011b \u2014 data. T\u00edm p\u00e1dem obnova pole a kontrola integrity prob\u00edh\u00e1 maxim\u00e1ln\u00ed rychlost\u00ed.<\/p>\n

T\u0159\u00edd\u011bn\u00ed alokac\u00ed<\/b> \u2014 u vdev pol\u00ed se objevil typ nosi\u010de, nyn\u00ed je mo\u017en\u00e9 ulo\u017eit metadata\/tabulky deduplikace (DDT)\/bloky dat men\u0161\u00ed ne\u017e X Kbyte na samostatn\u00fd vdev pole z v\u00fdkonn\u011bj\u0161\u00edch disk\u016f. V\u00edce rychlosti bohu rychlosti!<\/u> (a co se t\u00fd\u010de v\u011bci \u2014 tato mo\u017enost se velmi hod\u00ed v nadch\u00e1zej\u00edc\u00edm DRAID<\/a><\/noindex>).<\/p>\n

Mnoh\u00e9 administrativn\u00ed p\u0159\u00edkazy nyn\u00ed pracuj\u00ed rychleji d\u00edky c\u00edlen\u00e9mu ukl\u00e1d\u00e1n\u00ed do mezipam\u011bti metadat (nap\u0159\u00edklad, zfs list, zfs get<\/i>).<\/p>\n

Proces alokace dat byl paralelizov\u00e1n<\/b>, nyn\u00ed se pro ka\u017edou \u010d\u00e1st voln\u00e9ho prostoru (metaslab) vytv\u00e1\u0159\u00ed n\u011bkolik alok\u00e1tor\u016f. S NVME toho sice nevytla\u010d\u00edme v\u0161e, ale bude to lep\u0161\u00ed.<\/p>\n

Odlo\u017een\u00e1 obnova integrity<\/b> pole umo\u017en\u00ed nezat\u011b\u017eovat pole sou\u010dasnou p\u0159estavbou n\u011bkolika disk\u016f, ale prov\u00e1d\u011bt to postupn\u011b. T\u00edm se sn\u00ed\u017e\u00ed vliv na v\u00fdkon a doba p\u0159estavby.<\/p>\n

P\u0159i importu pool\u016f s velk\u00fdm mno\u017estv\u00edm volumes<\/b> se zv\u00fd\u0161ila rychlost jejich registrace v syst\u00e9mu.<\/p>\n

Tak\u00e9 QAT<\/b> nyn\u00ed umo\u017e\u0148uje p\u0159ev\u00e9st na n\u011bj v\u00fdpo\u010dty \u0161ifrov\u00e1n\u00ed a kontroln\u00edch sou\u010dt\u016f.<\/p>\n

A spousta drobn\u00fdch zm\u011bn (p\u0159ece jen 2000+ commit\u016f v relezu!).<\/a><\/noindex><\/p>\n

A nakonec \u2014 intriky<\/h3>\n

\nI kdy\u017e ZFSonLinux rychle p\u0159id\u00e1v\u00e1 podporu pro nov\u00e9 verze jader Linuxu (aktu\u00e1ln\u011b jsou podporov\u00e1ny verze 2.6.32 \u2014 5.1*), spr\u00e1vci jader projevuj\u00ed zjevn\u00fd nez\u00e1jem o pomoc s extern\u00edmi moduly (\u2026nepostar\u00e1me se o
\nextern\u00ed moduly j\u00e1dra\u2026<\/a><\/noindex> \u2014 greg k-h). Tak\u017ee po\u017eadovan\u00e9 vol\u00e1n\u00ed j\u00e1dra pro efektivn\u00ed provoz v v\u011btvi 5.0 zm\u011bn\u011bny na GPL-only <\/a><\/noindex>. V j\u00e1drech s t\u00edmto patchem bude v\u00fdkon ZFS v\u00fdrazn\u011b hor\u0161\u00ed. Zachra\u0148uje to skute\u010dnost, \u017ee tuto funk\u010dnost lze realizovat na stran\u011b modulu, co\u017e pravd\u011bpodobn\u011b bude provedeno. A zat\u00edm se m\u016f\u017eete inspirovat NixOS \u2014 ti jednodu\u0161e vr\u00e1tili patch do j\u00e1dra<\/a><\/noindex> \ud83d\ude42<\/p>\n

Tak\u00e9 projekt z\u00edskal Kodex chov\u00e1n\u00ed, co\u017e vyvolalo vlnu diskuz\u00ed. Ale my jsme se udr\u017eeli \ud83d\ude42<\/p>\n

V\u0161em pracovn\u00ed z\u00e1lohy a stabiln\u00ed release!<\/p>\n

U\u017eite\u010dn\u00e9 odkazy:
\n \u2014 release na Githubu<\/a><\/noindex>
\n \u2014 moje \u00favodn\u00ed v ZFS<\/a><\/noindex>
\n
Zdroj: 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: funkce, stabilizace, intriky. 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