Isithombe se- UGerd Altmann en Pixabay
Muva nje izindaba zikuqedile lokho inkampani ye-veeam, (inkampani ekhiqiza isofthiwe yokusekelayo neyokubuyisela izinhlekelele), iphakamise ukuthi imojuli ye-blksnap ifakwe ku-Linux kernel ngokuqaliswa komshini wokudala izifinyezo zamadivayisi we-block futhi ulandelele izinguquko kumadivayisi we-block.
Injongo de dala imodyuli ukuhlela isipele samadrayivu namadiski ngaphandle kokumisa umsebenzi, lokhu kuhloswe ukuthi imojula ivumele isimo samanje sayo yonke idivayisi ye-block ukuthi ithathwe ku-snapshot, inikeze ingxenye engayodwa yesipele esingancikile ekushintsheni okuqhubekayo.
Sanibonani nonke.
Ngiphakamisa inguqulo eguquliwe yemojuli ye-blksnap kernel ukuze uyicabangele. Ikuvumela ukuthi udale izifinyezo ezingaphezi zanoma iyiphi idivayisi yokuvimba. Inhloso eyinhloko yalezi zifinyezo ukudala isipele samadivayisi we-block.
Isifinyezo senziwa ngesikhathi esisodwa kumadivayisi amaningi we-block, okuqinisekisa ukuvumelana kwawo okufanayo ekwenzeni ikhophi yasenqolobaneni.
Kushiwo lokho isici esibalulekile nge blksnap yikhono lokudala izifinyezo kanyekanye kumadivayisi amaningi vimba ngesikhathi esisodwa, okungavumeli kuphela ukuqinisekisa ubuqotho bedatha ezingeni ledivayisi vimba, kodwa futhi nokufeza ukuvumelana esimweni samadivayisi ahlukene vimba ku-backup.
Ukuze ulandelele izinguquko kusistimu engaphansi yedivayisi evinjiwe (bdev), amandla okunamathisela izihlungi ezikuvumela ukuthi ubambe izicelo ze-I/O lengeziwe. I-blksnap isebenzisa isihlungi esibamba izicelo zokubhala, ifunde inani elidala, futhi ililondoloze ohlwini oluhlukile loshintsho olunquma isimo sesifinyezo.
Ngale ndlela, i-logic yokusebenza ngedivayisi ye-block ayishintshi, ukurekhodwa kudivayisi yokuqala ye-block kwenziwa njengoba kunjalo, kungakhathaliseki ukuthi yiziphi izifinyezo, eziqeda amathuba okonakala kwedatha futhi kuvimbela izinkinga ngisho nalapho kwenzeka amaphutha abalulekile angalindelekile. ku-blksnap futhi kuchichime isikhala esihloselwe izinguquko.
Ububanzi obungenangqondo bemikhakha bungasetshenziswa kunoma iyiphi idivayisi yokuvimba ukugcina izinguquko ezisheshayo. Ukushintsha usayizi wesitoreji ungandiswa ngemva kokuthi isifinyezo senziwe ngokungeza ububanzi bomkhakha obusha.
Lokhu kukuvumela ukuthi udale isitolo se-diff yefayela elilodwa kusistimu yefayela engakwazi ukuthatha indawo yonke yedivayisi ye-block futhi ukhulise isitolo se-diff njengoba kudingeka.
Imodyuli futhi ivumela ukunquma ukuthi yimaphi amabhlogo ashintshiwe phakathi kwezithombe zakamuva nanoma yiziphi ezedlule, ezingaba usizo kumsebenzisi ukuze asebenzise izipele ezikhulayo.
Mayelana nengxenye yokulondoloza izinguquko, maqondana nesimo sesifinyezo, kushiwo ukuthi kunganikezwa uhla olungenasizathu lwemikhakha kunoma iyiphi idivayisi ye-block, okukuvumela ukuthi ulondoloze izinguquko ukuze uhlukanise amafayela ngaphakathi kwe-FS kumadivayisi we-block. Usayizi wendawo yokugcina izinguquko ungandiswa noma kunini, ngisho nangemva kokuba isifinyezo sesidaliwe.
Ukuze usebenze ngezifinyezo, insiza yomugqa womyalo we-blksnap kanye nomtapo wezincwadi we-blksnap.so kulungiselelwe, okukuvumela ukuthi uhlanganyele nemojula ye-kernel ngezingcingo ze-ioctl ezivela esikhaleni somsebenzisi.
I-Blksnap isekelwe kukhodi yemojuli ye-veeamsnap, eyingxenye yomkhiqizo we-Veeam Agent yomkhiqizo we-Linux, kodwa eklanywe kabusha ukuze kucaciswe ukuthunyelwa kwempahla engxenyeni eyinhloko ye-Linux kernel.
Umehluko womqondo phakathi kwe-blksnap ne-veeamsnap ukusetshenziswa kwesistimu yokuhlunga enamathiselwe kudivayisi yokuvimba, kunengxenye ehlukile ye-bdevfilter engenela i-I/O.
Okokugcina uma unentshisekelo yokwazi kabanzi ngakho, ungabheka imininingwane ohlwini lwama-imeyili Kulesi sixhumanisi esilandelayo.