Ukungahambisani phakathi kwamadrayivu e-WD SMR kanye ne-ZFS kukhonjiwe, okungase kuholele ekulahlekeni kwedatha

I-iXsystems, umthuthukisi wephrojekthi ye-FreeNAS, uxwayisiwe mayelana nezinkinga ezingathi sína zokuhambisana kwe-ZFS namanye ama-hard drive e-WD Red amasha akhishwe yi-Western Digital esebenzisa ubuchwepheshe be-SMR (Shingled Magnetic Recording). Esimeni esibi kakhulu, ukusebenzisa i-ZFS kumadrayivu ayinkinga kungaholela ekulahlekeni kwedatha.

Izinkinga ziphakama ngamadrayivu e-WD Red anamandla asukela ku-2 kuye ku-6 TB, akhiqizwa kusukela ngo-2018, asebenzisa ubuchwepheshe bokuqopha. I-DM-SMR (Ukuqoshwa kwe-Shingled Magnetic okuphethwe yidivayisi) kanye amakiwe Ilebula ye-EFAX (kumadiski e-CMR kusetshenziswa isihlonzi se-EFRX). I-Western Digital kuphawuliwe kubhulogi yakhe ukuthi amadrayivu e-WD Red SMR aklanyelwe ukusetshenziswa ku-NAS kumabhizinisi asekhaya namancane, angafaki amadrayivu angaphezu kuka-8 futhi anomthwalo we-180 TB ngonyaka, okuvamile ukwenza isipele nokwabelana ngamafayela. Isizukulwane sangaphambilini samadrayivu e-WD Red namamodeli e-WD Red anomthamo we-8 TB noma ngaphezulu, kanye namadrayivu avela emigqeni ye-WD Red Pro, WD Gold kanye ne-WD Ultrastar, ayaqhubeka nokwakhiwa ngokusekelwe kubuchwepheshe be-CMR (Conventional Magnetic Recording) futhi ukusetshenziswa kwazo akubangeli izinkinga nge-ZFS.

Ingqikithi yobuchwepheshe be-SMR iwukusetshenziswa kwekhanda kazibuthe kudiski, ububanzi balo bukhulu kunobubanzi bethrekhi, okuholela ekurekhodweni ngokugqagqana ngokwengxenye kwethrekhi eseduze, i.e. noma yimiphi imiphumela yokurekhoda kabusha esidingweni sokuphinda urekhode lonke iqembu lamathrekhi. Ukwandisa umsebenzi ngamadrayivu anjalo, kuyasetshenziswa ukuklama izindawo - indawo yokugcina ihlukaniswe yaba izindawo ezakha amaqembu amabhulokhi noma imikhakha, lapho ukungezwa okulandelanayo kuphela kwedatha kuvunyelwe ngokubuyekeza lonke iqembu lamabhulokhi. Ngokuvamile, amadrayivu e-SMR awonga amandla kakhudlwana, ayathengeka kakhulu, futhi abonisa izinzuzo zokusebenza zokubhala ngokulandelana, kodwa abambezeleke lapho enza ukubhala okungahleliwe, okuhlanganisa imisebenzi efana nokwakha kabusha uhlu lwesitoreji.

I-DM-SMR isho ukuthi imisebenzi yokuklama nokusatshalaliswa kwedatha ilawulwa yisilawuli sediski futhi ohlelweni idiski elinjalo libukeka njengediski eliqinile lakudala elingadingi ukukhohlisa okuhlukene. I-DM-SMR isebenzisa ikheli lebhulokhi elingaqondile (i-LBA, Ikheli Lokuvimba Okunengqondo), okusikhumbuza ukukhuluma okunengqondo kumadrayivu e-SSD. Umsebenzi ngamunye wokubhala okungahleliwe udinga umsebenzi wokuqoqa udoti ongemuva, okuholela ekuguquguqukeni kokusebenza okungalindelekile. Uhlelo lungazama ukusebenzisa ukulungiselelwa kulawo madiski, lukholelwa ukuthi idatha izobhalelwa umkhakha oshiwo, kodwa empeleni ulwazi olukhishwe isilawuli lunquma kuphela isakhiwo esinengqondo futhi empeleni, lapho kusakazwa idatha, isilawuli sizosebenzisa ama-algorithms akho acabangela idatha eyabiwe ngaphambilini. Ngakho-ke, ngaphambi kokusebenzisa amadiski e-DM-SMR echibini le-ZFS, kunconywa ukwenza umsebenzi wokuwayeka futhi uwabuyisele esimweni sawo sokuqala.

I-Western Digital ibambe iqhaza ekuhlaziyeni izimo lapho izinkinga zivela khona, okuthi, kanye ne-iXsystems, izame ukuthola isisombululo futhi ilungiselele isibuyekezo se-firmware. Ngaphambi kokushicilela iziphetho mayelana nokulungisa izinkinga, amadrayivu ane-firmware entsha ahlelelwe ukuthi ahlolwe kusitoreji esilayisha kakhulu ngeFreeNAS 11.3 kanye ne-TrueNAS CORE 12.0. Kuthiwa ngenxa yokuhunyushwa okuhlukene kwe-SMR ngabakhiqizi abahlukene, ezinye izinhlobo zokushayela kwe-SMR azinazo izinkinga nge-ZFS, kodwa ukuhlolwa okwenziwa yi-iXsystems kugxile kuphela ekuhloleni amadrayivu e-WD Red asekelwe kubuchwepheshe be-DM-SMR, kanye ne-SMR. uyashayela abanye abakhiqizi ucwaningo olwengeziwe luyadingeka.

Njengamanje, izinkinga nge-ZFS ziye zafakazelwa futhi zaphindwa ezivivinyweni okungenani zokushayela kwe-WD Red 4TB WD40EFAX nge-firmware 82.00A82 kanye bonisa ukushintshela esimweni sokwehluleka ngaphansi komthwalo ophezulu wokubhala, isibonelo, lapho wenza isitoreji sokwakha kabusha ngemva kokwengeza idrayivu entsha kumalungu afanayo (i-resilver). Kukholakala ukuthi inkinga yenzeka kwamanye amamodeli e-WD Red ane-firmware efanayo. Uma kwenzeka inkinga, idiski iqala ukubuyisela ikhodi yephutha ye-IDNF (I-ID Yomkhakha Ayitholakali) futhi ingasebenziseki, ephathwa ku-ZFS njengokwehluleka kwediski futhi kungaholela ekulahlekelweni kwedatha egcinwe kudiski. Uma amadiski amaningi ehluleka, idatha eku-vdev noma yokubhukuda ingase ilahleke. Kuyaphawuleka ukuthi ukwehluleka okukhulunywe ngakho kwenzeka kuyaqabukela - kumasistimu ama-FreeNAS Mini angaba yinkulungwane afakwe amadiski ayinkinga, inkinga yavela ezimeni zokusebenza kanye kuphela.

Source: opennet.ru