{"id":53315,"date":"2019-11-29T00:00:00","date_gmt":"2019-11-28T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/active-restore-mozhet-li-avarijnoe-vosstanovlenie-proishodit-bystree-namnogo-bystree"},"modified":"2020-02-18T14:01:12","modified_gmt":"2020-02-18T11:01:12","slug":"active-restore-mozhet-li-avarijnoe-vosstanovlenie-proishodit-bystree-namnogo-bystree","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/administrirovanie\/active-restore-mozhet-li-avarijnoe-vosstanovlenie-proishodit-bystree-namnogo-bystree","title":{"rendered":"Active Restore: kas katastroofi taastamine v\u00f5iks toimuda kiiremini? Korduvalt kiiremini?","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Oluliste andmete varundamine on hea. Kuid mis siis, kui t\u00f6\u00f6 tuleb j\u00e4tkata kohe ning iga minut loeb? Me Acronises otsustasime uurida, kuiv\u00f5rd kiiresti saab s\u00fcsteemi taas k\u00e4ivitada. See on esimene postitus Active Restore'i seeriast, kus jagan, kuidas me projekti koos Innopolise \u00dclikooliga alustasime, millise lahenduse leidsime ja millega me praegu tegeleme. \u00dcksikasjad on allpool.<\/p>\n<p><img decoding=\"async\" alt=\"Active Restore: kas katastroofi taastamine v\u00f5iks toimuda kiiremini? Korduvalt kiiremini?\" src=\"\/wp-content\/uploads\/2019\/11\/14e18cf97e38df10a2dcce530be99122.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex> <br \/>\nTere! Minu nimi on Daulat Tumbaev ja t\u00e4na tahan jagada teiega oma kogemust s\u00fcsteemi arendamisest, mis kiirendab h\u00e4daolukorra taastamist. Projekti arengu tervikpildi selgitamiseks alustame natuke kaugemalt. Praegu t\u00f6\u00f6tan Acronises, kuid olen ka Innopolise \u00dclikooli vilistlane, mille l\u00f5petasin magistri\u00f5ppes \"Tarkvara arenduse juhtimine\" (tuntud kui MSIT-SE). Innopolis on noor \u00fclikool ja \u00f5ppekava veel noorem. Kuid see on \u00fcles ehitatud Carnegie Melloni \u00dclikooli \u00f5ppeplaanide alusel, millel on selline teema nagu t\u00f6\u00f6stusprojektid. <\/p>\n<p>T\u00f6\u00f6stusprojekti eesm\u00e4rk on viia \u00fcli\u00f5pilane t\u00f5elisse arendusse ja kinnistada saadud teadmised praktikas. Selleks teeb \u00fclikool koost\u00f6\u00f6d selliste ettev\u00f5tetega nagu Yandex, Acronis, MTC ja veel k\u00fcmnete teistega (kokku oli 2018. aasta seisuga \u00fclikoolil 144 partnerit). Koost\u00f6\u00f6 k\u00e4igus pakuvad ettev\u00f5tted \u00fclikoolile oma t\u00f6\u00f6valdkondi, mille seast \u00fcli\u00f5pilased valivad \u00fche projekti, mis on neile huvitavam vastavalt nende huvidele ja ettevalmistusele. Alles kaks aastat tagasi olin ma veel \"barj\u00e4\u00e4ri teisel pool\" ja t\u00f6\u00f6tasin tudengina Acronise juures teise projekti kallal. Kuid seekord sain ma ettev\u00f5tte poolt \u00fcli\u00f5pilaste tehniliseks n\u00f5ustajaks ning pakkusin Innopolis \u00fclikoolile projekti Active Restore. Idee Active Restore'ist p\u00e4rineb Acronise Kernel meeskonnalt, kuid lahenduse arendamine algas koost\u00f6\u00f6s Innopolis \u00fclikooliga.<\/p>\n<h3>Active Restore \u2013 miks see vajalik on?<\/h3>\n<p>\nTraditsiooniline h\u00e4daolukorra taastamine toimib standardse skeemi j\u00e4rgi. P\u00e4rast arvutiga tekkivaid probleeme sisenete m\u00f5ne varunduss\u00fcsteemi veebiliidesesse, n\u00e4iteks Acronis True Image, ja vajutate suurt nuppu \"taasta\". Seej\u00e4rel tuleb oodata N minutit ja alles siis saate j\u00e4tkata t\u00f6\u00f6d.<\/p>\n<p><img decoding=\"async\" alt=\"Active Restore: kas katastroofi taastamine v\u00f5iks toimuda kiiremini? Korduvalt kiiremini?\" src=\"\/wp-content\/uploads\/2019\/11\/ffd0d3248f6a625831270af42b58f80d.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nProbleem seisneb selles, et see number N, mida tuntakse ka kui RTO (recovery time objective), taastumise sihtaja, v\u00f5ib olla \u00fcsna suur, s\u00f5ltudes \u00fchenduse kiirusest (kui taastamine toimub pilvest), teie masina k\u00f5vaketta mahust ja mitmest muust tegurist. Kas seda on v\u00f5imalik v\u00e4hendada? Jah, see on v\u00f5imalik, sest t\u00f6\u00f6 j\u00e4tkamiseks ei ole alati vajalik kogu arvuti kettaruum. N\u00e4iteks fotod ja videod ei m\u00f5juta seadme funktsionaalsust ja need saab hiljem taustal \u00fcles laadida. <\/p>\n<h3>Juhtme \u00fchendamine on vajalik\u2026<\/h3>\n<p>\nOperatsioonis\u00fcsteem eeldab, et k\u00e4ivitamiseks on t\u00e4ielikult valmis ketas. Seet\u00f5ttu viib Windows l\u00e4bi mitmeid ketta terviklikkuse kontrolle. S\u00fcsteem ei luba normaalset k\u00e4ivitamist, kui puuduvad v\u00f5i on kahjustatud teatud failid, mida OS ootab. Selle probleemi lahendamiseks on otsustatud ketta peale paigutada meie loodud nn suunamisfailid, mis asendavad puuduvad v\u00f5i kahjustatud failid, kuid on tegelikult t\u00fchjad. Selliste suunajate loomine ei v\u00f5ta kaua aega, kuna neil ei ole sisuliselt mingit sisu. <\/p>\n<p>Edasi taastamine toimub j\u00e4rgmiselt. Taustprotsessis, paralleelselt operatsioonis\u00fcsteemi t\u00f6\u00f6ga, t\u00e4idetakse \u201et\u00fchikud\u201d andmetega. Tausttaastamise protsess arvestab ketta koormust ega \u00fcleta seadistatud limiiti. Kuid kasutaja v\u00f5i ise operatsioonis\u00fcsteem v\u00f5ib \u00e4kitselt n\u00f5uda faili, mida veel ei ole. Siin tuleb m\u00e4ngu teine taastamisre\u017eiim. N\u00f5utud failile antakse maksimaalne prioriteet ja taastamisprotsess laadib faili kiiresti kettale. Operatsioonis\u00fcsteem saab vajaliku faili, kuigi v\u00e4ikese viivitusega. <\/p>\n<p>Nii n\u00e4eb ideaalne pilt v\u00e4lja. Kuid t\u00f5elises maailmas on palju takistusi ja potentsiaalseid ummikseid. Koos Innopolis magistrantidega otsustasime uurida seda taastamisstsenaariumi, hinnata RTO kasu ja m\u00f5ista, kas selline l\u00e4henemine on teostatav? Sest sarnaseid lahendusi turul lihtsalt ei olnud tol hetkel.<\/p>\n<p>Ja kui otsustasin, et teenusekomponendi annan Innopolis poiste hoolde, siis Acronise sees algas t\u00f6\u00f6 <noindex><a rel=\"nofollow\" href=\"https:\/\/www.google.com\/url?q=https:\/\/docs.microsoft.com\/en-us\/windows-hardware\/drivers\/ifs\/file-system-minifilter-drivers&amp;sa=D&amp;ust=1574830326626000&amp;usg=AFQjCNHTjhYKohofWzxWVMH1osZesX1DPg\">mini-failis\u00fcsteemi filtridraiveri kallal<\/a><\/noindex>. Sellega tegeleb Windows Kernel'i meeskond. Plaan oli j\u00e4rgmine: <\/p>\n<ul>\n<li>K\u00e4ivitada draiver operatsioonis\u00fcsteemi varajases k\u00e4ivitamisfaasis, <\/li>\n<li>T\u00f6\u00f6tamise ajal, kui <noindex><a rel=\"nofollow\" href=\"https:\/\/www.google.com\/url?q=https:\/\/docs.microsoft.com\/en-us\/windows-hardware\/drivers\/gettingstarted\/user-mode-and-kernel-mode&amp;sa=D&amp;ust=1574830326627000&amp;usg=AFQjCNHxcMlVkRC4HMEw4BTrX2tB0DNALA\">kasutaja ruum<\/a><\/noindex> on t\u00e4ielikult valmis, laadida teenus,<\/li>\n<li>Teenuse kaudu t\u00f6\u00f6deldakse draiveri taotlusi ja koordineeritakse selle edasine t\u00f6\u00f6.<\/li>\n<\/ul>\n<p>\n<img decoding=\"async\" alt=\"Active Restore: kas katastroofi taastamine v\u00f5iks toimuda kiiremini? Korduvalt kiiremini?\" src=\"\/wp-content\/uploads\/2019\/11\/9f144da3317bbf894ab111f233d8ca8b.png\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<h3>Draiverite arenduse n\u00fcansid<\/h3>\n<p>\nKui minu kolleegid r\u00e4\u00e4givad teenusest teises postituses, siis selles tekstis avame draiveri arendamise n\u00fcansid. Juba arendatud mini-filtri draiveril on kaks t\u00f6\u00f6re\u017eiimi \u2013 kui s\u00fcsteem on k\u00e4ivitatud normaalses re\u017eiimis ja kui s\u00fcsteem on just kogenud t\u00f5rget ning toimub selle taastamine. Enne, kui kasutajakogumikud ja rakendused, sealhulgas meie teenus, laaditakse, k\u00e4itub draiver \u00fchtlaselt. Ta ei tea, millises olekus s\u00fcsteem praegu on. Selle tulemusena protokollitakse iga create, read ja write ning k\u00f5ik metaandmed fikseeritakse. Kui teenus on online, annab draiver selle teabe teenusele.<\/p>\n<p><img decoding=\"async\" alt=\"Active Restore: kas katastroofi taastamine v\u00f5iks toimuda kiiremini? Korduvalt kiiremini?\" src=\"\/wp-content\/uploads\/2019\/11\/d5f5a75bbce403ad98907ebcc7605883.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nTavalise k\u00e4ivitamise korral edastab teenus draiverile signaali \"Relax\", et ta \"rahuneks\" ja l\u00f5petaks k\u00f5ikide andmete p\u00f5hjaliku protokollimise. Sel juhul l\u00e4heb draiver \u00fcle vaid muudatuste protokollimisele kettal ja teavitab sellest teenust, mis teiste Acronise t\u00f6\u00f6riistade abil s\u00e4ilitab ketta varukoopia maksimaalselt v\u00e4rskena vastavalt kasutaja m\u00e4\u00e4ratud salvestamiseks. See v\u00f5ib olla pilve-, kaug- v\u00f5i j\u00e4rkj\u00e4rguline varundamine, samuti \u00f6ine varundamine. <\/p>\n<p><img decoding=\"async\" alt=\"Active Restore: kas katastroofi taastamine v\u00f5iks toimuda kiiremini? Korduvalt kiiremini?\" src=\"\/wp-content\/uploads\/2019\/11\/c383fa09eaf2956d6d8aa1aad9114bb3.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nKui taastamisre\u017eiim aktiveeritakse, teavitab teenus draiverit, et tal on vaja t\u00f6\u00f6tada \"Recovery\" re\u017eiimis. S\u00fcsteem on just hiljuti taastunud ootamatust katkestusest, ja niipea, kui see esitab p\u00e4ringu faili avamiseks kettal, peab mini-filter selle toimingu kinni p\u00fc\u00fcdma, tegema selle p\u00e4ringu ise, kontrollima, kas selline fail on kettal olemas ja kas seda on v\u00f5imalik avada. <\/p>\n<p>Kui faili pole olemas, edastab mini-filtriteenus selle teabe teenusele, mis suurendab faili taastamise prioriteeti (kogu selle aja jooksul toimub taustal taastamine). Tulemuseks on see, et see fail h\u00fcppab lihtsalt j\u00e4rjekorra etteotsa. P\u00e4rast seda taastab teenus ise (v\u00f5i Acronise kaudu muude abin\u00f5udega) selle faili ja teada annab draiverile, et k\u00f5ik on korras, n\u00fc\u00fcd saab operatsioonis\u00fcsteem sellega \u00fchendust v\u00f5tta ja draiver \"vabastab\" originaalse p\u00e4ringu s\u00fcsteemist kettale. <\/p>\n<p>Kui taastamine ei \u00f5nnestu, teavitab teenus draiverit, et faili ei leidu ka varukoopias. Meie mini-filtriteenus lihtsalt suunab s\u00fcsteemip\u00e4ringu edasi ja originaalne p\u00e4rija (isegi operatsioonis\u00fcsteem v\u00f5i rakendus) saab veateate \"fail ei leitud\". Siiski on see t\u00e4iesti normaalne, kui faili tegelikult kettal ja varukoopias ei olnud.<\/p>\n<p><img decoding=\"async\" alt=\"Active Restore: kas katastroofi taastamine v\u00f5iks toimuda kiiremini? Korduvalt kiiremini?\" src=\"\/wp-content\/uploads\/2019\/11\/e6c53a237ed1e41f2a1bdb6493f0c9b1.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nMuidugi t\u00f6\u00f6tab operatsioonis\u00fcsteem tunduvalt aeglasemalt, kuna iga faili v\u00f5i teegiga t\u00f6\u00f6tamise protsess toimub mitmes etapis, mis v\u00f5ib h\u00f5lmata ligip\u00e4\u00e4su kaugressurssidele. Kuid kasutaja saab t\u00f6\u00f6tamisega alustada l\u00fchikese aja jooksul, kuni taastamine j\u00e4tkub.<\/p>\n<h3>Peab olema madalam, veel madalam\u2026<\/h3>\n<p>\nProtot\u00fc\u00fcp on oma t\u00f6\u00f6v\u00f5imet t\u00f5estanud. Siiski oleme avastanud vajaduse edasi liikuda, kuna m\u00f5nes olukorras esinevad endiselt ummistused. N\u00e4iteks v\u00f5ib operatsioonis\u00fcsteem n\u00f5uda erinevaid teeke mitmesugustes voogudes, mis toob kaasa meie teenuse enda peale ummistumise. <\/p>\n<p>Probleem, millega ma hetkel t\u00f6\u00f6tan, on Active Restore kiirus ja s\u00fcsteemi turvalisuse tase. Oletame, et s\u00fcsteemile ei ole vajalik tervet faili, vaid vaid selle osa. Selleks on arendatud veel \u00fcks draiver - kettah\u00f5ivefilter. See toimib n\u00fc\u00fcd mitte failitasemel, vaid plokkide tasemel. T\u00f6\u00f6 p\u00f5him\u00f5te on sarnane: normaalses t\u00f6\u00f6s re\u017eiimis protokollib draiver lihtsalt ketta muudetud plokid, aga taastamisre\u017eiimis \u00fcritab lugeda plokki iseseisvalt ja juhul, kui see eba\u00f5nnestub, k\u00fcsib teenuselt prioriteedi t\u00f5stmist. Samal ajal j\u00e4\u00e4vad k\u00f5ik muud s\u00fcsteemi osad muutumatuks. N\u00e4iteks ei kahtlusta OS-i tase isegi, et talle pakutakse suhtlemist teise draiveriga, kuna peamine \u00fclesanne on pakkuda OS-ile vaid neid andmeid, mis on vajalikud selle toimimiseks. See suund vajab olulisi t\u00e4iustusi, v\u00e4hemalt seet\u00f5ttu, et teenus ei oska veel plokkide tasemel m\u00f5elda.<\/p>\n<p>J\u00e4rgmiseks sammuks otsustasin muuta draiveri k\u00e4ivitamise s\u00fcgavamaks ja varasemaks, laskudes UEFI draiverite ja Native Windows rakenduste tasemele hoopis teenuse asemel. Selleks on arendatud <noindex><a rel=\"nofollow\" href=\"https:\/\/edk2-docs.gitbooks.io\/edk-ii-uefi-driver-writer-s-guide\/3_foundation\/37_uefi_images\/372_drivers.html\">UEFI boot draiver<\/a><\/noindex> (v\u00f5i DXE draiver), mis k\u00e4ivitub ja sureb enne, kui OPS k\u00e4ivitub. Kuid UEFI draiverite \u201eajalugu\u201c, koos kogumise ja installimise \u00fcksikasjadega, samuti Windowsi Native rakenduste spetsiifilisusega, k\u00e4sitleme j\u00e4rgmises postituses. Seega liituge meie blogiga, samas kui ma valmistan ette j\u00e4rgmise t\u00f6\u00f6etapi jutustust. Ootan teie kommentaare ja n\u00f5uandeid.<\/p>\n<p class=\"for_users_only_msg\">Ainult registreeritud kasutajad saavad k\u00fcsitluses osaleda. <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/auth\/login\/\">Logige sisse<\/a><\/noindex>, palun.<\/p>\n<h2 class=\"default-block__polling-title\">Kas olete kunagi kogenud olukordi, kus taastamine kestis piinavalt kaua:<\/h2>\n<ul class=\"poll-result\">\n<li class=\"poll-result__item\">\n<p>                <strong class=\"poll-result__data-percent  poll-result__data-percent_winner\">65.1%<\/strong>Jah28<\/p>\n<\/li>\n<li class=\"poll-result__item\">\n<p>                <strong class=\"poll-result__data-percent\">23.2%<\/strong>Ei<\/p>\n<\/li>\n<li class=\"poll-result__item\">\n<p>                <strong class=\"poll-result__data-percent\">11.6%<\/strong>Ei ole m\u00f5elnud<\/p>\n<\/li>\n<\/ul>\n<p>    H\u00e4\u00e4letas 43 kasutajat. Erakonnast j\u00e4i 3 kasutajat.<br \/>\n<br \/>Allikas: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/acronis\/blog\/477658\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0420\u0435\u0437\u0435\u0440\u0432\u043d\u043e\u0435 \u043a\u043e\u043f\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0432\u0430\u0436\u043d\u044b\u0445 \u0434\u0430\u043d\u043d\u044b\u0445 \u2013 \u044d\u0442\u043e \u0445\u043e\u0440\u043e\u0448\u043e. \u041d\u043e \u0447\u0442\u043e \u0435\u0441\u043b\u0438 \u0440\u0430\u0431\u043e\u0442\u0443 \u043d\u0443\u0436\u043d\u043e \u043f\u0440\u043e\u0434\u043e\u043b\u0436\u0438\u0442\u044c \u0441\u0440\u0430\u0437\u0443, \u0438 \u043d\u0430 \u0441\u0447\u0435\u0442\u0443 \u043a\u0430\u0436\u0434\u0430\u044f \u043c\u0438\u043d\u0443\u0442\u0430? \u041c\u044b \u0432 Acronis \u0440\u0435\u0448\u0438\u043b\u0438 \u043f\u0440\u043e\u0432\u0435\u0440\u0438\u0442\u044c, \u043d\u0430\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e \u0440\u0435\u0448\u0438\u0442\u044c \u0437\u0430\u0434\u0430\u0447\u0443 \u043c\u0430\u043a\u0441\u0438\u043c\u0430\u043b\u044c\u043d\u043e \u0431\u044b\u0441\u0442\u0440\u043e\u0433\u043e \u0437\u0430\u043f\u0443\u0441\u043a\u0430 \u0441\u0438\u0441\u0442\u0435\u043c\u044b. \u0418 \u044d\u0442\u043e \u043f\u0435\u0440\u0432\u044b\u0439 \u043f\u043e\u0441\u0442 \u0438\u0437 \u0441\u0435\u0440\u0438\u0438 Active Restore, \u0432 \u043a\u043e\u0442\u043e\u0440\u043e\u043c \u044f \u0440\u0430\u0441\u0441\u043a\u0430\u0436\u0443, \u043a\u0430\u043a \u043c\u044b \u043f\u0440\u0438\u0441\u0442\u0443\u043f\u0438\u043b\u0438 \u043a \u043f\u0440\u043e\u0435\u043a\u0442\u0443 \u0432\u043c\u0435\u0441\u0442\u0435 \u0441 \u0423\u043d\u0438\u0432\u0435\u0440\u0441\u0438\u0442\u0435\u0442\u043e\u043c \u0418\u043d\u043d\u043e\u043f\u043e\u043b\u0438\u0441, \u043a\u0430\u043a\u043e\u0435 \u043d\u0430\u0448\u043b\u0438 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-53315","post","type-post","status-publish","format-standard","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.0.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0420\u0435\u0437\u0435\u0440\u0432\u043d\u043e\u0435 \u043a\u043e\u043f\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0432\u0430\u0436\u043d\u044b\u0445 \u0434\u0430\u043d\u043d\u044b\u0445 \u2013 \u044d\u0442\u043e \u0445\u043e\u0440\u043e\u0448\u043e. \u041d\u043e \u0447\u0442\u043e \u0435\u0441\u043b\u0438 \u0440\u0430\u0431\u043e\u0442\u0443 \u043d\u0443\u0436\u043d\u043e \u043f\u0440\u043e\u0434\u043e\u043b\u0436\u0438\u0442\u044c \u0441\u0440\u0430\u0437\u0443, \u0438 \u043d\u0430 \u0441\u0447\u0435\u0442\u0443 \u043a\u0430\u0436\u0434\u0430\u044f \u043c\u0438\u043d\u0443\u0442\u0430? 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