Umfanekiso we UGerd Altmann en pixabay
Kutshanje iindaba ziye zaqhekeka inkampani ye-veeam, (inkampani evelisa ugcino kunye nesoftware yokubuyisela intlekele), icetywe ukuba imodyuli ye-blksnap ibandakanywe kwi-Linux kernel ngokuphunyezwa kwendlela yokwenza ii-snapshots zezixhobo zebhloko kunye nokulandelela utshintsho kwizixhobo zebhloko.
Izizathu de yenza imodyuli kukulungelelanisa ugcino lweedrive ezinenyani kunye neediski ngaphandle kokumisa umsebenzi, oku kujongwe ukuba imodyuli ivumele imeko yangoku yesixhobo esibloko sisonke ukuba sithathwe kwi-snapshot, inikezela ngenxalenye esecaleni yogcino olungaxhomekekanga kutshintsho oluqhubekayo.
Molweni nonke.
Ndicebisa uguqulelo olulungisiweyo lwemodyuli ye-blksnap kernel ukuba uyiqwalasele. Ikuvumela ukuba wenze iifoto ezikhawulezayo ezizingisileyo kuso nasiphi na isixhobo sebhloko. Eyona njongo iphambili yezo snapshots kukwenza i-backup yezixhobo zebhloko.
I-snapshot yenziwe ngaxeshanye kwizixhobo ezininzi zebhloko, ziqinisekisa ukuhambelana kwazo kwi-backup.
Kuyakhankanywa ukuba uphawu olubalulekileyo nge blksnap kukwazi ukwenza ngaxeshanye izifinyezo kwizixhobo ezininzi zebhlokhi ngexesha elinye, akuvumeli kuphela ukuqinisekisa ukuthembeka kwedatha kwinqanaba lesixhobo sebhloko, kodwa kunye nokufezekisa ukuhambelana kwimeko yezixhobo ezahlukeneyo zebhloko kwi-backup.
Ukulandelela utshintsho kwisistim esezantsi yesixhobo (bdev), ukukwazi ukuncamathela izihluzi ezikuvumela ukuba uthintele izicelo ze-I/O zongeziwe. blksnap iphumeza icebo lokucoca elithintela izicelo ezibhaliweyo, lifunde ixabiso elidala, kwaye liyigcine kuluhlu lotshintsho olwahlukileyo olumisela ubume bomfanekiso okhawulezayo.
Ngale ndlela, ingqiqo yokusebenza kunye nesixhobo sebhloko ayitshintshi, ukurekhoda kwisixhobo sokuqala sebhloko kwenziwa njengokuba kunjalo, kungakhathaliseki ukuba yiyiphi i-snapshots, ephelisa ukuba nokwenzeka korhwaphilizo lwedatha kunye nokuthintela iingxaki nakwimeko yeempazamo ezibalulekileyo ezingalindelekanga. kwi blksnap kunye nokuphuphuma kwesithuba esilungiselelwe utshintsho.
Uluhlu olungenasizathu lwamacandelo lunokusetyenziswa kuso nasiphi na isixhobo sebhloko ukugcina utshintsho olukhawulezileyo. Ubungakanani obutshintshileyo bokugcinwa bunokwandiswa emva kokuba i-snapshot yenziwe ngokongeza uluhlu olutsha lwecandelo.
Oku kukuvumela ukuba wenze ifayile enye yediff ivenkile kwindlela yefayile enokuthi ithathe indawo yonke yesixhobo sebhloko kwaye ukhulise idiff yevenkile njengoko kufuneka.
Imodyuli ikwavumela ukumisela ukuba zeziphi iibhloko ezitshintshiweyo phakathi kwezamva nje kunye nazo naziphi na iisnapshots zangaphambili, ezinokuba luncedo kumsebenzisi ukuphumeza i-backups ezongeziweyo.
Ngokumalunga nenxalenye yokugcina utshintsho, ngokumalunga nemeko yesnapshot, kukhankanyiwe ukuba uluhlu olungenasizathu lwamacandelo lunokwabelwa kuso nasiphi na isixhobo block, ikuvumela ukuba ugcine utshintsho ukwahlula iifayile ngaphakathi FS kwizixhobo block. Ubungakanani bendawo yokugcina utshintsho lunokwandiswa nangaliphi na ixesha, nasemva kokuba i-snapshot yenziwe.
Ukusebenza kunye ne-snapshots, usetyenziso lomgca we-blksnap kunye nelayibrari ye-blksnap.so ilungisiwe, ekuvumela ukuba usebenzisane nemodyuli ye-kernel ngokusebenzisa iifowuni ze-ioctl ukusuka kwindawo yomsebenzisi.
I-Blksnap isekelwe kwikhowudi yemodyuli ye-veeamsnap, eyinxalenye ye-Agent ye-Veeam yemveliso ye-Linux, kodwa iphinde yahlelwa kwiinkcukacha zokuthumela kwinxalenye ephambili ye-Linux kernel.
Umahluko wengqikelelo phakathi kwe-blksnap kunye ne-veeamsnap kusetyenziso lwenkqubo yokucoca encanyathiselwe kwisixhobo sebhloko, kunecandelo elahlukileyo le-bdevfilter elithintela i-I/O.
Gqibela ukuba unomdla wokwazi okungakumbi ngayo, ungajonga iinkcukacha kuluhlu lokuposa Kule khonkco ilandelayo.