{"id":34321,"date":"2019-10-31T21:57:38","date_gmt":"2019-10-31T18:57:38","guid":{"rendered":"https:\/\/prohoster.info\/blog\/vosstanavlivaem-virtualnye-mashiny-s-oshibochno-initsializirovannogo-datastore-istoriya-odnoj-gluposti-s-heppi-endom\/"},"modified":"2019-10-31T21:57:38","modified_gmt":"2019-10-31T18:57:38","slug":"vosstanavlivaem-virtualnye-mashiny-s-oshibochno-initsializirovannogo-datastore-istoriya-odnoj-gluposti-s-heppi-endom","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/administrirovanie\/vosstanavlivaem-virtualnye-mashiny-s-oshibochno-initsializirovannogo-datastore-istoriya-odnoj-gluposti-s-heppi-endom","title":{"rendered":"Obnovujeme virtu\u00e1ln\u00ed stroje z chybn\u011b inicializovan\u00e9ho Datastore. P\u0159\u00edb\u011bh jedn\u00e9 hlouposti s \u0161\u0165astn\u00fdm koncem","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Upozorn\u011bn\u00ed: <\/b>Pozn\u00e1mka m\u00e1 z\u00e1bavn\u00fd charakter. Obsahuje m\u00e1lo u\u017eite\u010dn\u00fdch informac\u00ed. Byla naps\u00e1na \u201epro sebe\u201c.<\/p><\/blockquote>\n

<\/p>\n

Lyrick\u00e9 \u00favod<\/h3>\n

\nOdpadkov\u00fd prostor na\u0161\u00ed organizace b\u011b\u017e\u00ed na virtu\u00e1ln\u00edm stroji VMware ESXi 6 pod Windows Server 2016. A to nen\u00ed jen tak oby\u010dejn\u00fd odpad. Je to server pro v\u00fdm\u011bnu soubor\u016f mezi struktur\u00e1ln\u00edmi jednotkami: zde prob\u00edh\u00e1 spolupr\u00e1ce, projektov\u00e1 dokumentace a slo\u017eky ze s\u00ed\u0165ov\u00fdch skener\u016f. V podstat\u011b tu je cel\u00e1 v\u00fdrobn\u00ed \u010dinnost.<\/p>\n

A tato n\u00e1dr\u017e cel\u00e9ho v\u00fdrobn\u00edho \u017eivota za\u010dala zamrzat. P\u0159i\u010dem\u017e host se mohl tichou\u010dku zaseknout s\u00e1m, ani\u017e by ovlivnil ostatn\u00ed. Mohl zamrznout s sebou cel\u00fd host a t\u00edm p\u00e1dem i v\u0161echny ostatn\u00ed hostitelsk\u00e9 stroje. Mohl zamrznout s\u00e1m a zastavit klientsk\u00e9 slu\u017eby vSphere: to znamen\u00e1, \u017ee procesy ostatn\u00edch hostitel\u016f byly aktivn\u00ed, stroje fungovaly a odpov\u00eddaly, ale ten odpadkov\u00fd prostor nefungoval a vSphere Client se k hostiteli nep\u0159ipojoval. Celkov\u011b nebylo mo\u017en\u00e9 identifikovat \u017e\u00e1dn\u00fd syst\u00e9m selh\u00e1n\u00ed. Z\u00e1seky se mohly vyskytovat b\u011bhem dne p\u0159i n\u00edzk\u00e9 z\u00e1t\u011b\u017ei. Mohly se vyskytnout v noci p\u0159i nulov\u00e9 z\u00e1t\u011b\u017ei. Mohly se vyskytnout v noci b\u011bhem diferen\u010dn\u00edho z\u00e1lohov\u00e1n\u00ed a p\u0159i st\u0159edn\u00ed z\u00e1t\u011b\u017ei. Mohly se objevit o v\u00edkendech b\u011bhem \u00fapln\u00e9ho z\u00e1lohov\u00e1n\u00ed a p\u0159i vysok\u00e9 z\u00e1t\u011b\u017ei. A bylo patrn\u00e9 jasn\u00e9 zhor\u0161en\u00ed situace. Nejd\u0159\u00edve to bylo jednou za rok, pot\u00e9 jednou za p\u016fl roku. Na konci m\u00e9 trp\u011blivosti \u2013 dvakr\u00e1t t\u00fddn\u011b.
\nPodez\u0159\u00edval jsem opera\u010dn\u00ed pam\u011b\u0165. Ale zastavit odpadov\u00fd prostor ani o v\u00edkendech a spustit Memtest mi nedovolili. \u010cekali jsme na kv\u011btnov\u00e9 sv\u00e1tky. V kv\u011btnov\u00fdch sv\u00e1tc\u00edch jsem spustil Memtest a\u2026 \u017e\u00e1dn\u00e9 chyby nebyly nalezeny.
\n<\/a><\/noindex>
\nByl jsem u\u017easnut\u00fd a rozhodl jsem se j\u00edt na dovolenou. B\u011bhem m\u00e9 dovolen\u00e9 nem\u011bl odpadkov\u00fd prostor ani jedno zamrznut\u00ed. A kdy\u017e jsem se v pond\u011bl\u00ed vr\u00e1til do pr\u00e1ce \u2013 odpadkov\u00fd prostor zamrzl. P\u0159e\u017eil \u00fapln\u00e9 z\u00e1lohov\u00e1n\u00ed a p\u0159esn\u011b po jeho ukon\u010den\u00ed zamrzl. Takov\u00e9 v\u0159el\u00e9 uv\u00edt\u00e1n\u00ed z dovolen\u00e9 m\u011b vedlo k rozhodnut\u00ed fyzicky p\u0159en\u00e9st disky s hostitelsk\u00fdm strojem na jin\u00fd hostitel.<\/p>\n

A\u010dkoli je d\u00e1vno zn\u00e1mo, \u017ee prvn\u00ed den po dovolen\u00e9 by se nem\u011blo d\u011blat nic v\u00e1\u017en\u00e9ho, a\u010dkoli jsem se celou cestu do pr\u00e1ce sna\u017eil nenavazovat pr\u00e1ci, m\u00e9 rozho\u0159\u010den\u00ed nad dal\u0161\u00edm zamrznut\u00edm mi vyhnalo z hlavy jakoukoliv p\u0159\u00edpravu i p\u0159edsevzet\u00ed...<\/p>\n

Fyzick\u00e9 disky byly p\u0159esunuty na jin\u00fd hostitel. P\u0159ipojen\u00ed za b\u011bhu. V nastaven\u00ed \u00falo\u017ei\u0161\u0165 na kart\u011b Drives<\/i> objevuj\u00ed se disky. Na kart\u011b Datastores<\/i> \u00falo\u017ei\u0161t\u011b na t\u011bchto disc\u00edch \u2014 nejsou. Obnovit<\/i> \u2014 se neobjevuj\u00ed. No a samoz\u0159ejm\u011b, prvn\u00ed impuls \u2014 P\u0159idat \u00falo\u017ei\u0161t\u011b<\/i>. Pr\u016fvodce p\u0159id\u00e1v\u00e1n\u00edm \u0159\u00edk\u00e1, \u017ee to podporuje. Samoz\u0159ejm\u011b podporuje i VMFS. O tom jsem nepochyboval. Rychl\u00fd pohled na zpr\u00e1vy pr\u016fvodce na ka\u017ed\u00e9m kroku: Dal\u0161\u00ed, Dal\u0161\u00ed, Dal\u0161\u00ed, Dokon\u010dit. Pohled se ani vzd\u00e1len\u011b nezam\u011b\u0159il na mal\u00fd \u017elut\u00fd kruh s vyk\u0159i\u010dn\u00edkem ve spodn\u00ed \u010d\u00e1sti okna jednoho z krok\u016f pr\u016fvodce.<\/p>\n

Po dokon\u010den\u00ed pr\u016fvodce se nov\u00e1 Datastore objevila v seznamu\u2026 a s n\u00ed i Datastores z ostatn\u00edch fyzick\u00fdch disk\u016f.<\/p>\n

P\u0159ech\u00e1z\u00edm k navigaci po pr\u00e1v\u011b p\u0159idan\u00e9 Datastore a ona\u2026 je pr\u00e1zdn\u00e1. Samoz\u0159ejm\u011b, op\u011bt jsem padl do \u00fa\u017easu. 8 r\u00e1no na hodin\u00e1ch, prvn\u00edch 15 minut v pr\u00e1ci po dovolen\u00e9, dokonce ani cukr v k\u00e1v\u011b jsem je\u0161t\u011b nem\u00edchal. A te\u010f tohle. Prvn\u00ed my\u0161lenka byla \u2014 ne ten disk jsem vyt\u00e1hl z \"domovsk\u00e9ho\" hostitele. Pod\u00edval jsem se, zda po\u017eadovan\u00e1 Datastore existuje v \"domovsk\u00e9m\" hostiteli: ne, neexistuje. Druh\u00e1 my\u0161lenka byla: \u201esakra!\u201c. Nejsem si jist\u00fd, ale zd\u00e1 se mi, \u017ee t\u0159et\u00ed, \u010dtvrt\u00e1 a minim\u00e1ln\u011b p\u00e1t\u00e1 my\u0161lenka byla stejn\u00e1.<\/p>\n

Abych rozpt\u00fdlil pochybnosti, rychle jsem nainstaloval nov\u00fd ESXi, vzal lev\u00fd disk a, kdy\u017e jsem u\u017e \u010detl, pro\u0161el jsem kroky pr\u016fvodce. Ano. P\u0159i p\u0159id\u00e1v\u00e1n\u00ed Datastore pomoc\u00ed pr\u016fvodce dojde k ztr\u00e1t\u011b v\u0161ech dat na disku bez mo\u017enosti vr\u00e1tit operaci a obnovit data. Pozd\u011bji jsem si p\u0159e\u010detl na jednom z f\u00f3r hodnocen\u00ed takov\u00e9ho designu pr\u016fvodce: shitsome crap. A s t\u00edm jsem naprosto souhlasil.<\/p>\n

Od \u0161est\u00e9 my\u0161lenky \u2014 my\u0161lenky za\u010daly plynout v konstruktivn\u011bj\u0161\u00edm sm\u011bru. Dob\u0159e. Inicializace trv\u00e1 jen n\u011bkolik sekund i pro 3Tb disk. Znamen\u00e1 to, \u017ee je to vysokon\u00e1rov\u0148ov\u00e9 form\u00e1tov\u00e1n\u00ed. Znamen\u00e1 to, \u017ee byla pouze p\u0159eps\u00e1na tabulka odd\u00edl\u016f. Znamen\u00e1 to, \u017ee data jsou st\u00e1le tam. Znamen\u00e1 to, \u017ee te\u010f hled\u00e1me n\u011bjak\u00fd unformat a voila.<\/p>\n

Spou\u0161t\u00edm stroj z bootovac\u00edho obrazu Strelec\u2026 A zji\u0161\u0165uji, \u017ee programy na obnovu odd\u00edl\u016f neznaj\u00ed nic krom\u011b VMFS. Nap\u0159\u00edklad rozd\u011blen\u00ed odd\u00edl\u016f Synology znaj\u00ed, ale VMFS \u2014 ne.<\/p>\n

P\u0159ehled program\u016f nen\u00ed povzbudiv\u00fd: v nejlep\u0161\u00edm p\u0159\u00edpad\u011b GetDataBack a R.Saver najdou NTFS odd\u00edly s \u017eivou strukturou adres\u00e1\u0159\u016f a \u017eiv\u00fdmi n\u00e1zvy soubor\u016f. Ale to m\u011b neuspokojuje. Pot\u0159ebuji dva vmdk soubory: s diskem syst\u00e9mu a diskem soubor\u016f z ko\u0161e.<\/p>\n

A nyn\u00ed ch\u00e1pu, \u017ee pravd\u011bpodobn\u011b budu muset nainstalovat Windows a obnovit se z \u0444\u0430\u0439\u043b\u043e\u0432\u043e\u0433\u043e b\u044dckup\u0443. A z\u00e1rove\u0148 si vzpom\u00edn\u00e1m, \u017ee jsem tam m\u011bl ko\u0159en DFS. A tak\u00e9 zcela \u0161\u00edlen\u00fd syst\u00e9m u\u017eivatelsk\u00fdch pr\u00e1v k adres\u00e1\u0159\u016fm odd\u011blen\u00ed. Nen\u00ed to mo\u017enost. Jedinou p\u0159ijatelnou variantou v \u010dase je obnoven\u00ed stavu syst\u00e9mu a disku s daty a v\u0161emi pr\u00e1vy.<\/p>\n

Op\u011bt hled\u00e1n\u00ed na Googlu, f\u00f3ra, KB a znovu pl\u00e1\u010d Jaroslavny: VMware ESXi nenab\u00edz\u00ed mechanismus pro obnovu dat. V\u0161echny diskuse maj\u00ed dva konce: n\u011bkdo se obnovil d\u00edky drah\u00e9mu DiskInternals VMFS Recovery, nebo mu pomohl specialista, kter\u00fd aktivn\u011b propaguje sv\u00e9 slu\u017eby. vmfs-tools<\/i> a dd<\/i>. Varianta s n\u00e1kupem licence DiskInternals VMFS Recovery za 700 $ \u2014 nen\u00ed mo\u017enost. P\u0159\u00edstup t\u0159et\u00ed osoby z \u201e\u00fazem\u00ed potenci\u00e1ln\u00edho protivn\u00edka\u201c k firemn\u00edm dat\u016fm \u2014 tak\u00e9 nen\u00ed mo\u017enost. Na\u0161t\u011bst\u00ed bylo na internetu nalezeno, \u017ee VMFS odd\u00edly um\u00ed \u010d\u00edst tak\u00e9 UFS Explorer.<\/p>\n

DiskInternals VMFS Recovery<\/h3>\n

\nByla sta\u017eena a nainstalov\u00e1na zku\u0161ebn\u00ed verze. Program \u00fasp\u011b\u0161n\u011b rozpoznal pr\u00e1zdn\u00fd VMFS odd\u00edl:<\/p>\n

\"Obnovujeme
\n
\nV re\u017eimu Undelete (Fast Scan)<\/i> tak\u00e9 na\u0161el a po\u0161kozen\u00fd Datastore s adres\u00e1\u0159i virtu\u00e1ln\u00edch stroj\u016f<\/a> s disky uvnit\u0159:<\/p>\n

\"Obnovujeme
\n
\nN\u00e1hled uk\u00e1zal, \u017ee soubory jsou \u017eiv\u00e9:<\/p>\n

\"Obnovujeme
\n
\nP\u0159ipojen\u00ed odd\u00edlu do syst\u00e9mu bylo \u00fasp\u011b\u0161n\u00e9, ale z nezn\u00e1m\u00e9ho d\u016fvodu ve v\u0161ech t\u0159ech adres\u00e1\u0159\u00edch byla stejn\u00e1 virtu\u00e1ln\u00ed ma\u0161inka. Samoz\u0159ejm\u011b, podle z\u00e1kona schv\u00e1lnosti \u2014 ne ta, kter\u00e1 je pot\u0159eba.<\/p>\n

T\u0159i \u0159\u00e1dky hanby<\/b>Pokusem o bezosty\u0161n\u00e9 kraden\u00ed softwaru skon\u010dila ne\u00fasp\u011bchem. Ale poda\u0159ilo se mi skop\u00edrovat UFS Explorer.<\/p>\n

K vyn\u00e1\u0161en\u00ed softwaru m\u00e1m krajn\u011b negativn\u00ed postoj. V \u017e\u00e1dn\u00e9m p\u0159\u00edpad\u011b nenavrhuji pou\u017e\u00edvat prost\u0159edky obch\u00e1zen\u00ed ochrany p\u0159ed neleg\u00e1ln\u00edm pou\u017e\u00edv\u00e1n\u00edm. \n<\/p><\/blockquote>\n

\nByl jsem v katastrof\u00e1ln\u00ed situaci a nijak jsem se net\u011b\u0161il z t\u011bch opat\u0159en\u00ed, ke kter\u00fdm jsem musel p\u0159istoupit.<\/p>\n

UFS Explorer<\/h3>\n

\nSkenov\u00e1n\u00ed disku uk\u00e1zalo p\u0159\u00edtomnost 7 uzl\u016f. Po\u010det uzl\u016f \u201e\u00fa\u017easn\u011b\u201c odpov\u00eddal po\u010dtu *-flat.vmdk soubor\u016f, nalezen\u00fdch p\u0159i VMFS Recovery:<\/p>\n

\"Obnovujeme
\n
\nPorovn\u00e1n\u00ed velikosti soubor\u016f a velikost\u00ed uzl\u016f tak\u00e9 uk\u00e1zalo shodu do posledn\u00edho bytu. Z\u00e1rove\u0148 byla obnovena jm\u00e9na *-flat.vmdk soubor\u016f a, odpov\u00eddaj\u00edc\u00edm zp\u016fsobem, jejich p\u0159\u00edslu\u0161nost k virtu\u00e1ln\u00edm stroj\u016fm.<\/p>\n

\"Obnovujeme
\n
\nVmdk disky z pohledu ESXi se skl\u00e1daj\u00ed ze dvou soubor\u016f: je to soubor s daty (-flat.vmdk) a soubor \u201efyzick\u00e9ho\u201c rozlo\u017een\u00ed disku (.vmdk). Pokud se soubor *-flat.vmdk nahraje z m\u00edstn\u00edho stroje do Datastore, ESXi ho neuzn\u00e1 jako platn\u00fd soubor disku. V datab\u00e1zi znalost\u00ed VMware je \u010dl\u00e1nek o tom, jak ru\u010dn\u011b vytvo\u0159it soubor deskriptoru disku: kb.vmware.com\/s\/article\/1002511<\/a><\/noindex>, ale j\u00e1 to nemusel d\u011blat, jednodu\u0161e jsem zkop\u00edroval obsah p\u0159\u00edslu\u0161n\u00fdch soubor\u016f z oblasti n\u00e1hledu souboru v DiskInternals VMFS Recovery:<\/p>\n

\"Obnovujeme
\n
\nPo 4 hodin\u00e1ch exportu 2,5 TB uzlu z UFS Exploreru a 20 hodin\u00e1ch nahr\u00e1v\u00e1n\u00ed do Datastore hypervizora byly zni\u010den\u00e9 soubory disk\u016f p\u0159ipojeny k \u010derstv\u011b vytvo\u0159en\u00e9 virtu\u00e1ln\u00ed ma\u0161in\u011b. Disky se p\u0159ipojily. Ztr\u00e1ta dat nebyla zaznamen\u00e1na.<\/p>\n

\"Obnovujeme
\n
Zdroj: habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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