{"id":52513,"date":"2019-11-10T00:00:00","date_gmt":"2019-11-09T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/obnovlenie-klasternoj-fajlovoj-sistemy-lizardfs-3-13-0-rc2"},"modified":"2020-02-18T14:00:15","modified_gmt":"2020-02-18T11:00:15","slug":"obnovlenie-klasternoj-fajlovoj-sistemy-lizardfs-3-13-0-rc2","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/news\/obnovlenie-klasternoj-fajlovoj-sistemy-lizardfs-3-13-0-rc2","title":{"rendered":"Klastri failis\u00fcsteemi LizardFS 3.13.0-rc2 uuendus","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>P\u00e4rast aastast pausi arenduses <noindex><a rel=\"nofollow\" href=\"https:\/\/lizardfs.com\/introduction-to-the-community\/\">on j\u00e4tkunud<\/a><\/noindex> t\u00f6\u00f6 uue t\u00f5rketaluvusega hajusfailis\u00fcsteemi haru kallal <noindex><a rel=\"nofollow\" href=\"https:\/\/lizardfs.org\/\">LizardF 3.13<\/a><\/noindex> ja <noindex><a rel=\"nofollow\" href=\"https:\/\/lizardfs.com\/version-3-13-0-rc2\/\">avaldati<\/a><\/noindex> teine v\u00e4ljalaskekandidaat. Hiljuti <noindex><a rel=\"nofollow\" href=\"https:\/\/lizardfs.com\/update-on-lizardfs-project\/\">toimus<\/a><\/noindex> p\u00e4rast LizardFS-i arendava ettev\u00f5tte omanike vahetust nimetati uus juhtkond ja vahetusid ka arendajad. Viimase kahe aasta jooksul eemaldus projekt kogukonnast ega p\u00f6\u00f6ranud sellele piisavalt t\u00e4helepanu, kuid uus meeskond kavatseb taastada varasemad suhted kogukonnaga ja luua sellega tiheda koost\u00f6\u00f6. Projekti kood on kirjutatud C ja C++ keeles ning seda levitatakse <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/lizardfs\/lizardfs\">levitatakse<\/a><\/noindex> GPLv3 litsentsi alusel. <\/p>\n<p>LizardFS on <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.lizardfs.com\/introduction.html\">on<\/a><\/noindex> hajus klasterfailis\u00fcsteem, mis v\u00f5imaldab andmed jaotada erinevate serverite vahel, kuid esitada neile juurdep\u00e4\u00e4su \u00fche suure \u00fchtse kettapartitsioonina, millega t\u00f6\u00f6tatakse sarnaselt traditsiooniliste kettapartitsioonidega. LizardFS-iga \u00fchendatud haakesektsioonis toetatakse POSIX-failiatribuute, ACL-e, lukustusi, sokleid, kanaleid, seadmefaile ning s\u00fcmboolseid ja k\u00f5vasid linke. S\u00fcsteemil puudub \u00fcksik t\u00f5rkepunkt, k\u00f5ik komponendid on dubleeritud. Toetatud on andmetoimingute paralleelne t\u00f6\u00f6tlemine (mitu klienti saavad samal ajal failidele juurde p\u00e4\u00e4seda).<\/p>\n<p>Ette kindlustada talitlusp\u00fcsivus, jagatakse andmed replikateks, mis jaotatakse erinevatele s\u00f5lmedele reservatsiooniga (mitmed koopiad asuvad erinevates s\u00f5lmedes) \u2014 s\u00f5lmede v\u00f5i ketaste t\u00f5rke korral j\u00e4tkab s\u00fcsteem t\u00f6\u00f6d ilma andmete kadumiseta ja jaotab andmed automaatselt \u00fcmber vastavalt allesj\u00e4\u00e4nud s\u00f5lmedele. Salvestusruumi suurendamiseks piisab, kui \u00fchendada uued s\u00f5lmed, ilma et oleks vaja teenust katkestada (s\u00fcsteem replitseerib andmete osa uutele serveritele ja tasakaalustab salvestust vastavalt uutele serveritele). Sarnast l\u00e4henemist v\u00f5ib kasutada ka klastrite suuruse v\u00e4hendamiseks \u2014 vananenud seadme lihtsalt v\u00e4ljal\u00fclitamiseks.<\/p>\n<p>Andmeid ja metaandmeid hoitakse eraldi. Soovitatav on seadistada kaks metaandmete serverit, mis t\u00f6\u00f6tavad master-slave re\u017eiimis, ning v\u00e4hemalt kaks andmete salvestamise serverit (chunkserver). Metaandmete reservimiseks v\u00f5ivad kasutada ka logiservereid, mis s\u00e4ilitavad teavet metaandmete muutmise kohta ja v\u00f5imaldavad taastada t\u00f6\u00f6d juhul, kui k\u00f5ik olemasolevad metaandmete serverid on kahjustatud. Iga fail jagatakse plokkideks (chunk), mille suurus on kuni 64 MB. Plokid jaotatakse salvestusserverite vahel vastavalt valitud replikatsioonire\u017eiimile: standardne (kopeerimise arvu selge m\u00e4\u00e4ramine erinevates s\u00f5lmedes, sealhulgas erikataloogides \u2014 oluliste andmete koopiate arvu saab suurendada, mitteoluliste puhul v\u00e4hendada), XOR (RAID5) ja EC (RAID6).<\/p>\n<p>Salvestusruumi saab skaleerida kuni petabaitideni. Kasutusvaldkondadena on nimetatud arhiivide haldamist, virtuaalmasinate t\u00f5mmiste salvestamist, multimeediaandmete ja varukoopiate hoidmist, kasutust DRC-na (Disaster Recovery Center) ning salvestuslahendusena suure j\u00f5udlusega arvutusklastrites. LizardFS tagab v\u00e4ga suure lugemiskiiruse igas suuruses failide puhul ning pakub kirjutamisel head j\u00f5udlust suurte ja keskmise suurusega failide t\u00e4ielikul salvestamisel, kui ei toimu pidevat muutmist, intensiivset t\u00f6\u00f6d avatud failidega ega \u00fchekordseid toiminguid suure hulga v\u00e4ikeste failidega.<\/p>\n<p><center><noindex><a rel=\"nofollow\" href=\"https:\/\/docs.lizardfs.com\/_images\/lfs.png\"><img decoding=\"async\" alt=\"Klastri failis\u00fcsteemi LizardFS 3.13.0-rc2 uuendus\" src=\"\/wp-content\/uploads\/2019\/11\/4218e934b60eb3cfb2194b1f09a02905.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><\/center><\/p>\n<p>FS-i erip\u00e4ra hulka kuulub ka snapshootide tugi, mis kajastavad failide olekut teatud ajahetkel, ja sissebuilt implementatsioon 'pr\u00fcgikasti' (failid ei kustutata kohe ja on mingi aja jooksul taastamiseks saadaval). Juurdep\u00e4\u00e4s osale v\u00f5ib olla piiratud IP-aadressi v\u00f5i parooliga (sarnaselt NFS-iga). On olemas kvootide ja teenuse kvaliteedi haldamise mehhanismid, mis v\u00f5imaldavad piirata suurust ja l\u00e4bilaskev\u00f5imet teatud kasutajagrupi jaoks. V\u00f5imalik on luua territoriaalselt jaotatud salvestusi, mille segmendid on paigutatud erinevatesse andmekeskustesse. <\/p>\n<p>LizardFS-i projekt loodi 2013. aastal fork'ina <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/moosefs\/moosefs\">MooseFS<\/a><\/noindex>, ja erineb peamiselt teadmiste replikatsioonire\u017eiimi olemasolu poolest, mis p\u00f5hineb Reed-Solomoni paranduskoodidel (sarnane raidzN-ile), t\u00e4iendava ACL-i toe, Windows platvormi kliendi olemasolu, t\u00e4iendavate optimeerimistega (n\u00e4iteks, kui klient ja salvestusserver on \u00fchendatud, antakse plokid saadaval oleva s\u00f5lme kaudu, samas kui metaandmed vahelduvad m\u00e4llu), paindlikuma seadistuss\u00fcsteemiga, ennetava andmeedastuse toetusega, kataloogide kvotidega ja sisemiste \u00fcmberkorraldustega.<\/p>\n<p>LizardFS 3.13.0 v\u00e4ljalase on plaanis v\u00e4lja anda detsembri l\u00f5pus. LizardFS 3.13 peamine uuendus on konsensuse saavutamise algoritmi kasutuselev\u00f5tt t\u00f5rketaluvuse tagamiseks (master-serverite \u00fcmberl\u00fclitamiseks rikke korral) <noindex><a rel=\"nofollow\" href=\"https:\/\/raft.github.io\/\">Rafti<\/a><\/noindex> (kasutatakse uRafti omarakendust, mida on varem kasutatud kommertstoodetes). uRafti kasutamine lihtsustab seadistamist ja v\u00e4hendab taastumise viivitusi p\u00e4rast riket, kuid eeldab v\u00e4hemalt kolme t\u00f6\u00f6tava s\u00f5lme olemasolu, millest \u00fchte kasutatakse kvoorumi jaoks. <\/p>\n<p>Muude muudatuste hulgas on uus FUSE3 alams\u00fcsteemil p\u00f5hinev klient, veaparanduste korrigeerimise probleemide lahendused ning nfs-ganesha plugin on \u00fcmber kirjutatud C-keeles. V\u00e4rskenduses 3.13.0-rc2 parandati mitu kriitilist viga, mis muutsid haru 3.13 varasemad testv\u00e4ljalasked kasutamiseks v\u00e4he sobivaks (haru 3.12 parandusi pole seni avaldatud ning uuendamine versioonilt 3.12 versioonile 3.13 p\u00f5hjustab endiselt t\u00e4ieliku andmekao).<\/p>\n<p>2020. aastal keskendutakse t\u00f6\u00f6 k\u00e4igus arendusele<br \/>\n<noindex><a rel=\"nofollow\" href=\"https:\/\/archive.fosdem.org\/2018\/schedule\/event\/lizardfs\/attachments\/paper\/2458\/export\/events\/attachments\/lizardfs\/paper\/2458\/FOSDEM_SDS_Devroom_Presentation_2018.pdf\">Agama<\/a><\/noindex>, LizardFS-i uuele t\u00e4ielikult \u00fcmber kirjutatud tuumale, mis arendajate kinnitusel tagab v\u00f5rreldes haruga 3.12 kolmekordse j\u00f5udluse kasvu. Agama puhul minnakse \u00fcle s\u00fcndmusp\u00f5hisele arhitektuurile (event driven), as\u00fcnkroonsele sisendile\/v\u00e4ljundile, mis p\u00f5hineb <noindex><a rel=\"nofollow\" href=\"http:\/\/think-async.com\/\">asio<\/a><\/noindex>, ning t\u00f6\u00f6 toimub peamiselt kasutajaruumis (et v\u00e4hendada s\u00f5ltuvust tuuma vahem\u00e4lumehhanismidest). Lisaks pakutakse uut silumisalams\u00fcsteemi ja v\u00f5rguliikluse anal\u00fcsaatorit koos j\u00f5udluse automaatse h\u00e4\u00e4lestamise toega. <\/p>\n<p>LizardFSi kliendile lisatakse t\u00e4ielik kirjutustoimingute versioonihalduse tugi, mis parandab t\u00f5rkej\u00e4rgse taastamise t\u00f6\u00f6kindlust, lahendab probleemid, mis tekivad siis, kui erinevad kliendid kasutavad samu andmeid \u00fchiselt, ning v\u00f5imaldab saavutada m\u00e4rkimisv\u00e4\u00e4rse j\u00f5udluse kasvu. Klient viiakse \u00fcle omaenda kasutajaruumis t\u00f6\u00f6tavale v\u00f5rgualams\u00fcsteemile. Agamal p\u00f5hinev LizardFSi esimene toimiv protot\u00fc\u00fcp on kavas valmis saada 2020. aasta teises kvartalis. Samaks ajaks lubatakse kasutusele v\u00f5tta ka vahendid LizardFSi integreerimiseks Kubernetesi platvormiga.<\/p>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Allikas: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51804\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u043e\u0441\u043b\u0435 \u0433\u043e\u0434\u0438\u0447\u043d\u043e\u0433\u043e \u0437\u0430\u0442\u0438\u0448\u044c\u044f \u0432 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0435 \u0432\u043e\u0437\u043e\u0431\u043d\u043e\u0432\u0438\u043b\u0430\u0441\u044c \u0440\u0430\u0431\u043e\u0442\u0430 \u043d\u0430\u0434 \u043d\u043e\u0432\u043e\u0439 \u0432\u0435\u0442\u043a\u043e\u0439 \u043e\u0442\u043a\u0430\u0437\u043e\u0443\u0441\u0442\u043e\u0439\u0447\u0438\u0432\u043e\u0439 \u0440\u0430\u0441\u043f\u0440\u0435\u0434\u0435\u043b\u0451\u043d\u043d\u043e\u0439 \u0444\u0430\u0439\u043b\u043e\u0432\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b LizardF 3.13 \u0438 \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0432\u0442\u043e\u0440\u043e\u0439 \u043a\u0430\u043d\u0434\u0430\u0434\u0430\u0442 \u0432 \u0440\u0435\u043b\u0438\u0437\u044b. \u041d\u0435\u0434\u0430\u0432\u043d\u043e \u043f\u0440\u043e\u0438\u0437\u043e\u0448\u043b\u0430 \u0441\u043c\u0435\u043d\u0430 \u0432\u043b\u0430\u0434\u0435\u043b\u044c\u0446\u0435\u0432 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0438, \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u044e\u0449\u0435\u0439 LizardFS, \u0431\u044b\u043b\u043e \u043f\u0440\u0438\u043d\u044f\u0442\u043e \u043d\u043e\u0432\u043e\u0435 \u0440\u0443\u043a\u043e\u0432\u043e\u0434\u0441\u0442\u0432\u043e \u0438 \u0441\u043c\u0435\u043d\u0438\u043b\u0438\u0441\u044c \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438. \u041f\u043e\u0441\u043b\u0435\u0434\u043d\u0438\u0435 \u0434\u0432\u0430 \u0433\u043e\u0434\u0430 \u043f\u0440\u043e\u0435\u043a\u0442 \u043e\u0442\u0441\u0442\u0440\u0430\u043d\u0438\u043b\u0441\u044f \u043e\u0442 \u0441\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u0430 \u0438 \u043d\u0435 \u0443\u0434\u0435\u043b\u044f\u043b \u0435\u043c\u0443 \u0434\u043e\u043b\u0436\u043d\u043e\u0433\u043e \u0432\u043d\u0438\u043c\u0430\u043d\u0438\u044f, \u043d\u043e \u043d\u043e\u0432\u0430\u044f \u043a\u043e\u043c\u0430\u043d\u0434\u0430 \u043d\u0430\u043c\u0435\u0440\u0435\u043d\u0430 \u0432\u043e\u0437\u0440\u043e\u0434\u0438\u0442\u044c \u043f\u0440\u0435\u0436\u043d\u0438\u0435 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":52514,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-52513","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041f\u043e\u0441\u043b\u0435 \u0433\u043e\u0434\u0438\u0447\u043d\u043e\u0433\u043e \u0437\u0430\u0442\u0438\u0448\u044c\u044f \u0432 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0435 \u0432\u043e\u0437\u043e\u0431\u043d\u043e\u0432\u0438\u043b\u0430\u0441\u044c \u0440\u0430\u0431\u043e\u0442\u0430 \u043d\u0430\u0434 \u043d\u043e\u0432\u043e\u0439 \u0432\u0435\u0442\u043a\u043e\u0439 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