Mayar da hoton ajiya na injin kama-da-wane: abin da yake maidowa da abin da ba ya maidowa
Hoton ajiya na VM yana mayar da yanayin faifai da ƙwaƙwalwar baƙo, ba ayyukan asusu na nesa, kwafin fayilolin da aka raba ko bayanan da ake ajiye wani wuri ba: fara ayyana iyakar mayar da baya.
Wurin dubawa yana mayar da wani ɓangare na baƙo baya kuma yana barin kowane tsari a inda yake. Abin da ya bar baƙo — saƙon da aka isar, fayil da aka kwafa zuwa mai masauki, aikin asusu da wani shafi ya karɓa — na tsarin da ya karɓe shi ne, ba na wurin dubawa ba. Mayar da baya yana da takamaiman iyaka na gida, kuma kiran sa sharewa yana mai da shirin dawo da abu maganar ƙarya. Jadawalin da ke ƙasa shine jerin dubawa na abin da maidowa ta gaske ke kaiwa.
Kwamfutar tebur tana dawowa, zaman nesa ba ya dawowa
Korafin da aka saba yana zuwa bayan faruwar abu. Injin kama-da-wane yana tashi a yanayin makon da ya gabata, tarihin burauza ya tafi, kuma sabis ɗin da mai amfani ya shiga har yanzu yana lissafa zaman a matsayin mai aiki. Babu abin da ya lalace; tsarin biyu ba su taɓa kasancewa cikin ma'amala ɗaya ba.
| Where the effect landed | Who owns undoing it | How you verify it is gone |
|---|---|---|
| Guest virtual disk | The hypervisor, through the checkpoint you restore | The disk state matches the checkpoint's timestamp |
| Guest memory | Only a checkpoint type that saved memory | The guest resumes or cold-boots, as that type dictates |
| Host share or clipboard | The owner of that host path | The copied file is absent at its destination |
| Remote account or session | The service that accepted the action | The session list shows nothing active for that account |
| Mail or message queue | The mail system that delivered it | The message is gone from the recipient's mailbox, not from the guest |
Wancan rashin daidaituwa shine darasin. Wurin dubawa yana mayar da abin da hypervisor ke bibiya: kayan aikin kama-da-wane na baƙo da kuma, dangane da nau'i, ƙwaƙwalwarsa. Ba ya bibiyar teburin zama na manhajar yanar gizo, layin isar da sabis ɗin wasiƙa ko jakar saukewa ta abokin aiki. Karanta nau'in kafin maidowa, domin nau'in ne ke yanke shawarar abin da maidowa zai iya dawo da shi kwata-kwata.
Abin da hypervisor ya adana da gaske
Takardun Hyper-V na Microsoft sun bambanta wuraren dubawa na yau da kullum, waɗanda suke ɗaukar ƙwaƙwalwa tare da faifai na kama-da-wane, da na samarwa, waɗanda suke amfani da hanyar da ta dace da bayanai kuma suke tsallake ƙwaƙwalwa. Wurin dubawa na yau da kullum yana ci gaba daga umarnin da baƙo yake aiwatarwa; na samarwa yana tashi daga faifai mai dacewa maimakon haka. Wannan bambanci ne ke yanke shawarar ko maidowa za ta dawo da tsari mai gudana ko farawa mai tsabta. Kada ka ɗauki halin hypervisor ɗaya zuwa wani, domin kalmomi da hanyar daidaito suna canzawa tsakanin kayayyaki.
Microsoft kuma yana gargaɗi cewa wurin dubawa ba kwafin ajiya ba ne, kuma gargaɗin yana da muhimmanci. Sarkar wuraren dubawa a kan ƙara ɗaya tana raba rabon wannan ƙara, don haka tana karewa daga mummunan canji maimakon daga ɓataccen mai masauki.
Fayilolin da suke rayuwa a wajen faifin baƙo
Jakar da aka raba ita ce tsarin fayil na mai masauki da aka gabatar wa baƙo, kuma mayar da baƙo baya ba ya mayar da ita. Idan mai amfani ya sauke fayil a cikin baƙo kuma ya kwafa shi waje ta hanyar da aka raba, wannan kwafi na biyu yana da nasa zagayowar rayuwa da nasa mai shi. Maido da baƙo yana cire kwafin farko kuma yana barin na biyu daidai inda aka sa shi.
Tambayi wane ne ya mallaki kowace hanya kafin ka yi alƙawarin mayar da baya. Raba mai masauki, canja wurin allon kwafi da ɗorawa zuwa faifin girgije uku ne wurare, kuma na farko ne kawai zai iya kasancewa kusa da ajiyar hypervisor.
Inda ya kamata a cire kwafi da gaske, cire shi a wurin da ya nufa kuma rubuta wannan matakin daban. Shirin maidowa da ya lissafa hoton ajiya kawai bai cika ba ta hanyar da babu wanda zai lura da ita har sai an sami kwafin. Irin wannan taka tsantsan ya shafi rajistan ayyukan da mai masauki ya rubuta yayin da baƙo yake gudana.
Asusun da hypervisor bai taɓa gani ba
Duk abin da sabis ya karɓa daga baƙo rikodin sabis ne, ba na baƙo ba. Hypervisor bai taɓa ganin wannan ma'amala ba, don haka ba zai iya juya ta ba. Canjin kalmar sirri, saye, saƙon da aka wallafa da kiran API duk suna wanzuwa a cikin tsarin da ya sarrafa su. Maido da hoton faifai ba ya kaiwa wannan tsarin.
Yanayin burauza yana mai da rashin daidaituwar abu bayyananne. Baƙon da aka maido zai iya riƙe tsohon kuki na sabis da ya canza zaman tun lokacin, don haka mai amfani ya zama kamar ya shiga kuma an ƙi shi cikin shiru, ko ya zama kamar ya fita yayin da sabis ɗin har yanzu yana ɗaukan zaman ingantacce. Soke zaman a sabis ɗin shine kadai aikin da zai kawo masa ƙarshe.
Abin da maidowa ba zai iya sokewa ba
Wurin dubawa yana da amfani ga gwajin da aka amince da shi ko gwajin tsari wanda aka fahimci iyakarsa. Sokewar gida ne ga yanayin gida, wanda alkawari ne mai kunkuntar fiye da yadda ake ji, kuma ba hujja ba ce cewa mai masauki, hypervisor ko wani tsarin waje ya kasance mai tsabta. VPN yana canza hanyar da fakiti suke bi; ba ya mai da manhajar da ke cikin baƙo abin da ke da aminci a gudanar. Waɗannan da'awar biyu daban ne kuma ɗaya ne kawai game da rami.
$cp = Get-VMSnapshot -VMName lab-desktop -Name baseline
Get-VMHardDiskDrive -VMSnapshot $cp | Select-Object ControllerType, ControllerNumber, ControllerLocation, PathLayin farko yana warware wurin dubawa zuwa abu, layin na biyu yana lissafa faifan da yake rufewa, wanda ke amsa tambayar iyaka da hujja maimakon ƙwaƙwalwa. Juya kuma soke wani sirri da ya bayyana a sabis ɗin da ya mallake shi. Inda sanannen code na mugunta yake cikin lamarin, yi amfani da yanayin bincike da aka ba da izini da tsarin mayar da martani na ƙungiyar maimakon ɗaukan cewa hoton ajiya yana mai da aiwatarwa aminci.
Rubuta abubuwa uku kafin maidowa: wane yanayin baƙo kake ɗauka baya, waɗanne tsarin waje har yanzu suna riƙe da tasirin, da kuma wurin da za ka amince da shi daga baya. Wannan shirin da'awa ce mai ƙarfi fiye da injin da ya sake zama sananne. Ajiye shi tare da tikitin domin maidowa na gaba ta fara daga wannan jeri.