{"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\/novosti-interneta\/obnovlenie-klasternoj-fajlovoj-sistemy-lizardfs-3-13-0-rc2","title":{"rendered":"LizardFS klastrifailis\u00fcsteemi versiooniuuendus 3.13.0-rc2","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>P\u00e4rast \u00fcheaastast pausit arenduses <noindex><a rel=\"nofollow\" href=\"https:\/\/lizardfs.com\/introduction-to-the-community\/\">on taas alanud<\/a><\/noindex> t\u00f6\u00f6d uue talitluse kindla jaotatud failis\u00fcsteemi \u00fcle <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\/\">avaldatud<\/a><\/noindex> teine kandidaat v\u00e4ljaandmiseks. Hiljuti <noindex><a rel=\"nofollow\" href=\"https:\/\/lizardfs.com\/update-on-lizardfs-project\/\">toimus<\/a><\/noindex> omanike vahetus ettev\u00f5ttes, mis arendab LizardFS, ning uued juhid ja arendajad on ametisse astunud. Viimased kaks aastat projekt on olnud eraldatud kogukonnast ja pole sellele piisavalt t\u00e4helepanu p\u00f6\u00f6ranud, kuid uus meeskond kavatseb taastada varasemad suhted kogukonnaga ja luua tihedat koost\u00f6\u00f6d. Projekti kood on kirjutatud keeltes C ja C++ ning <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/lizardfs\/lizardfs\">GNU \u00dcldine Avaliku litsentsi alusel.<\/a><\/noindex> GPLv3 litsentsi all. <\/p>\n<p>LizardFS <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.lizardfs.com\/introduction.html\">on<\/a><\/noindex> jaotatud klasterfailis\u00fcsteem, mis v\u00f5imaldab andmeid jaotada erinevatele serveritele, pakkudes siiski neile juurdep\u00e4\u00e4su kui \u00fchele suurele osale, millega t\u00f6\u00f6tamine toimub nagu traditsiooniliste k\u00f5vakettajaotustega. LizardFS monteeritud osas toetatakse POSIX-faili atribuute, ACL-e, lukustusi, sokkleid, sidekanaleid, seadme faile, s\u00fcmboolseid ja k\u00f5vasid linke. S\u00fcsteemil ei ole \u00fchtegi rikkepunkti, k\u00f5ik komponendid on varustatud varukoopiate tegemisega. Toetatakse andmete operatsioonide paralleelset t\u00f6\u00f6tlemist (mitmed kliendid saavad samaaegselt faile juurde p\u00e4\u00e4seda).<\/p>\n<p>Ettev\u00f5tete t\u00f6\u00f6kindluse tagamiseks jagatakse andmed replikateks, mis jaotatakse erinevatele s\u00f5lmedele koos varukoopiatega (mitmed koopiad paigutatakse erinevatele s\u00f5lmedele). Kui m\u00f5ni s\u00f5lm v\u00f5i salvestusseade peaks rikki minema, j\u00e4tkab s\u00fcsteem t\u00f6\u00f6d andmete kaotuseta ja tasakaalustab andmed automaatselt vastavalt j\u00e4\u00e4nud s\u00f5lmedele. Salvestusmahtu saab suurendada, liites s\u00fcsteemile uusi s\u00f5lmi ilma t\u00f6\u00f6 katkemiseta (s\u00fcsteem replitseerib juba osaliselt andmed uutele serveritele ja tasakaalustab salvestust vastavalt uutele serveritele). Samuti saab klastrit vajadusel v\u00e4hendada \u2013 piisab vananenud seadmete v\u00e4ljal\u00fclitamisest.<\/p>\n<p>Andmed ja metaandmed hoitakse eraldi. Soovitatav on paigaldada kaks metaandmete serverit, mis t\u00f6\u00f6tavad master-slave re\u017eiimis, samuti v\u00e4hemalt kaks andmesalvestuse serverit (chunkserver). Lisaks metaandmete varukoopiate jaoks v\u00f5ivad olla kasutusel logiserverid, mis salvestavad metaandmete muutuste teavet ja v\u00f5imaldavad taastada toimimise, kui k\u00f5ik olemasolevad metaandmete serverid peaks rikki minema. Iga fail jagatakse plokkideks (chunk), mille suurus on kuni 64 MB. Plokid jaotatakse salvestusserveritele vastavalt valitud replikatsiooni re\u017eiimile: standardne (koopia arvu selge m\u00e4\u00e4ramine erinevatele s\u00f5lmedele, sealhulgas seotuna \u00fcksikutele kataloogidele \u2013 olulistele andmetele saab koopia arvu suurendada, mitteolulistele v\u00e4hendada), XOR (RAID5) ja EC (RAID6).<\/p>\n<p>Salvestus v\u00f5ib ulatuda petabaidini. Kasutusaladeks on arhiivide haldamine, virtuaalmasinate piltide, meediandmete, varukoopiate salvestamine, DRC (katastroofide taastamiskeskuse) kasutamine ning salvestamine k\u00f5rgetehnoloogiliste arvutuste klastrites. LizardFS tagab v\u00e4ga k\u00f5rge lugemise koormuse igas suuruses failide jaoks ning kirjutamisel n\u00e4itab head j\u00f5udlust suurte ja keskmise suurusega failide t\u00e4iskirjutamisel, kui ei esine pidevat modifitseerimist, intensiivset avatud failidega t\u00f6\u00f6tamist ega \u00fchekordseid operatsioone paljude v\u00e4ikeste failide puhul.<\/p>\n<p><center><noindex><a rel=\"nofollow\" href=\"https:\/\/docs.lizardfs.com\/_images\/lfs.png\"><img decoding=\"async\" alt=\"LizardFS klastrifailis\u00fcsteemi versiooniuuendus 3.13.0-rc2\" src=\"\/wp-content\/uploads\/2019\/11\/4218e934b60eb3cfb2194b1f09a02905.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><\/center><\/p>\n<p>FS-i erip\u00e4rade hulgas v\u00f5ib m\u00e4rkida ka automaatsete j\u00e4\u00e4dvustuste toetust, mis peegeldavad failide olekut kindlal hetkel, ja sisseehitatud 'pr\u00fcgikasti' lahendust (failid ei kustutata kohe ja on teatud aja jooksul taastatav). Juurdep\u00e4\u00e4s jaotisele v\u00f5ib olla piiratud IP-aadressi v\u00f5i parooliga (sarnaselt NFS-iga). Saadaval on kvoodihaldus ja teenuse kvaliteedi juhtimise mehhanismid, mis v\u00f5imaldavad piirata suurust ja l\u00e4bilaskev\u00f5imet teatud kasutajate kategooriate jaoks. On v\u00f5imalik luua territoriaalselt jaotatud salvestusruume, mille segmentide asukohad asuvad erinevates andmekeskustes. <\/p>\n<p>LizardFS projekt asutati 2013. aastal services <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/moosefs\/moosefs\">MooseFS<\/a><\/noindex>, ja selle peamine erinevus seisneb replikatsiooni re\u017eiimi olemasolus, mille aluseks on Reed-Solomoni vigade parandamise koodid (sarnane raidzN-iga), laiendatud ACL toe, Windows platvormile m\u00f5eldud kliendi olemasolu, t\u00e4iendavate optimeerimistega (nt klient ja salvestusseade t\u00f6\u00f6tavad koos, plokid antakse v\u00f5imaluse korral tagasi aktuaalsest s\u00f5lmest ja metaandmed vahelduvalt m\u00e4llu), paindlikuma seadistamise s\u00fcsteemiga, andmete ennustava lugemise toega, kataloogide kvootide ning sisemiste kapitalikeskustamisega.<\/p>\n<p>LizardFS 3.13.0 v\u00e4ljaandmine on planeeritud detsembri l\u00f5ppu. Peamine uuendus LizardFS 3.13-s on kasutuselev\u00f5tt usaldusv\u00e4\u00e4rsuse tagamiseks (master-serverite vahetamine rikke korral) konsensuse saavutamise algoritmi. <noindex><a rel=\"nofollow\" href=\"https:\/\/raft.github.io\/\">Raft<\/a><\/noindex> (kasutuses on oma uRafti teostus, mida on varem kasutatud \u00e4rikaupades). uRafti kasutamine lihtsustab seadistamist ja v\u00e4hendab taastumisaega rikke korral, kuid n\u00f5uab v\u00e4hemalt kolme t\u00f6\u00f6tavat s\u00f5lme, millest \u00fcks on kohordiks. <\/p>\n<p>Teistest muudatustest: uus klient FUSE3 alusel, veaparanduste lahendamine, nfs-ganesha plugin on kirjutatud \u00fcmber C keeles. Uuenduses 3.13.0-rc2 on parandatud mitmeid kriitilisi vigu, mis muutsid varasemad 3.13 haru testversioonid kasutamiseks sobimatuks (parandused 3.12 haru jaoks pole veel avaldatud, ning uuendamine 3.12-lt 3.13-le toob endiselt kaasa t\u00e4ieliku andmete kadumise).<\/p>\n<p>2020. aastal keskendutakse 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>, t\u00e4iesti uue LizardFS-i s\u00fcdamiku, mille arendajad v\u00e4idavad, et see tagab j\u00f5udluse kolme korda suurema v\u00f5rreldes versiooniga 3.12. Agamas toimub \u00fcleminek s\u00fcndmustel p\u00f5hinevale arhitektuurile (event driven), as\u00fcnkroonsele sisend\/v\u00e4ljundile kattes <noindex><a rel=\"nofollow\" href=\"http:\/\/think-async.com\/\">asio<\/a><\/noindex>, peamiselt kasutaja ruumis (tugevuse v\u00e4hendamiseks s\u00f5ltuvusest s\u00fcdamiku vahem\u00e4lu mehhanismidest). T\u00e4iendavalt pakutakse uut silumise alams\u00fcsteemi ja v\u00f5rguaktiivsuse anal\u00fcsaatorit, millel on toimetuleku automaatne h\u00e4\u00e4lestamine. <\/p>\n<p>LizardFSi kliendisse lisatakse t\u00e4ielik versioonihalduse tugi kirjutamise toimingute jaoks, mis t\u00f5stab usaldusv\u00e4\u00e4rsust t\u00f5rkej\u00e4rgsel taastamisel, lahendab probleemid, mis tekivad mitme kliendi juurdep\u00e4\u00e4su korral samadele andmetele, ning v\u00f5imaldab saavutada m\u00e4rkimisv\u00e4\u00e4rset j\u00f5udluse t\u00f5usu. Klient viidatakse omaette v\u00f5rgualusele, mis t\u00f6\u00f6tab kasutaja ruumis. Esimene t\u00f6\u00f6tav protot\u00fc\u00fcp LizardFS-ist Agama p\u00f5hjal on plaanis valmida 2020. aasta teises kvartalis. Samuti lubatakse sel ajal k\u00e4ivitada vahendeid LizardFS integreerimiseks Kubernetes 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-novosti-interneta"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.0.1 - 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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