Ihlobo laseMoscow kulo nyaka, uma ngikhuluma iqiniso, lalingelihle kakhulu. Iqale ekuseni kakhulu futhi ngokushesha, akuwona wonke umuntu owayenesikhathi sokusabela kuyo, futhi yaphela kakade ekupheleni kukaJuni. Ngakho-ke, lapho uHuawei engimema ukuba ngiye eShayina, edolobheni laseChengdu, lapho isikhungo sabo se-RnD sikhona, ngemva kokubheka isibikezelo sezulu sama-+34 degrees emthunzini, ngavuma ngokushesha. Phela angiseyena unyaka futhi ngidinga ukufudumala amathambo ami kancane. Kodwa ngithanda ukuqaphela ukuthi kwakungenzeka ukufudumala amathambo kuphela, kodwa nangaphakathi, ngoba isifundazwe saseSichuan, lapho i-Chengdu ikhona ngempela, idume ngokuthanda ukudla okubabayo. Kodwa noma kunjalo, lena akuyona ibhulogi mayelana nokuhamba, ngakho-ke ake sibuyele emgomweni oyinhloko wohambo lwethu - umugqa omusha wezinhlelo zokugcina - Huawei Dorado V6. Lesi sihloko sizokunyakazisa kancane kusukela esikhathini esedlule, ngoba... yabhalwa ngaphambi kwesimemezelo esisemthethweni, kodwa yanyatheliswa kuphela ngemva kokukhululwa. Ngakho-ke, namuhla sizobhekisisa yonke into ethokozisayo nemnandi uHuawei asilungiselele yona.
Kuzoba namamodeli angu-5 kulayini omusha. Wonke amamodeli ngaphandle kwe-3000V6 angaba nezinguqulo ezimbili - i-SAS ne-NVMe. Inketho inquma ukuxhumana kwamadiski ongawasebenzisa kulolu hlelo, izimbobo ze-Back-End kanye nenani lamadrayivu ediski ongawafaka ohlelweni. Ku-NVMe, kusetshenziswa ama-SSD asayizi we-Palm, azacile kune-2.5" SAS SSD yakudala futhi angafakwa ezicucu ezingu-36. Ulayini omusha uthi Yonke i-Flash futhi akukho ukulungiselelwa ngamadiski.
I-Palm NVMe SSD
Ngokubona kwami, i-Dorado 8000 ne-18000 zibukeka njengamamodeli athakazelisa kakhulu. I-Huawei iwabeka njengezinhlelo ezisezingeni eliphezulu, futhi, ngenxa yenqubomgomo yentengo ye-Huawei, iqhathanisa lawa mamodeli we-Mid-range nengxenye yesimbangi. Yilawa mamodeli engizogxila kuwo ekubuyekezweni kwami namuhla. Ngizoqaphela ngaso leso sikhathi ukuthi ngenxa yezici zabo zokuklama, amasistimu amancane okulawula kabili anezakhiwo ezihluke kancane, ezihluke ku-Dorado 8000 kanye ne-18000, ngakho-ke akuyona yonke into engizokhuluma ngayo namuhla esebenzayo kumamodeli amancane.
Esinye sezici eziyinhloko zezinhlelo ezintsha kwakuwukusetshenziswa kwama-chips amaningana, athuthukiswe endlini, ngayinye evumela ukuthi usakaze umthwalo onengqondo kusuka kuphrosesa ephakathi yesilawuli futhi wengeze ukusebenza ezingxenyeni ezahlukene.
Inhliziyo yezinhlelo ezintsha ama-Kunpeng 920 processors, athuthukiswe kubuchwepheshe be-ARM futhi akhiqizwa yi-Huawei ngokuzimela. Ngokuya ngemodeli, inani lama-cores, imvamisa yawo kanye nenani lamaphrosesa afakiwe kusilawuli ngasinye ziyahlukahluka:
I-Huawei Dorado V6 8000 – 2CPU, 64 core
I-Huawei Dorado V6 18000 – 4CPU, 48 core
UHuawei uthuthukise le processor ekwakhiweni kwe-ARM, futhi ngokwazi kwami, ekuqaleni wayehlele ukuyifaka kumamodeli amadala we-Dorado 8000 kanye ne-18000, njengoba kwakunjalo ngamamodeli athile e-V5, kodwa unswinyo lwenza izinguquko kulo mbono. Vele, i-ARM iphinde yakhuluma ngokwenqaba ukubambisana neHuawei ngesikhathi kufakwa unswinyo, kepha lapha isimo sihlukile kune-Intel. I-Huawei ikhiqiza lawa ma-chip ngokuzimela, futhi akukho unswinyo olungamisa le nqubo. Ukunqamula ubudlelwano ne-ARM kusongela kuphela ukulahlekelwa ukufinyelela entuthukweni entsha. Ngokuqondene nokusebenza, kuzokwazi ukwahlulela kuphela ngemuva kokwenza izivivinyo ezizimele. Nakuba ngabona ukuthi i-18000M IOPS ikhishwe kanjani ohlelweni lwe-Dorado 1 ngaphandle kwezinkinga, kuze kube yilapho ngiyiphinda ngezandla zami ku-rack yami, ngeke ngikholwe. Kodwa empeleni maningi amandla kubalawuli. Amamodeli amadala afakwe izilawuli ezi-4, ngalinye linama-processor angu-4, anikeza ingqikithi yama-cores angu-768.
Kodwa ngizokhuluma ngama-cores ngisho nakamuva, lapho sibheka ukwakhiwa kwezinhlelo ezintsha, kodwa okwamanje ake sibuyele kwenye i-chip efakwe ohlelweni. I-chip ibukeka njengesixazululo esithakazelisa kakhulu (Ngokuqonda kwami, umfowabo omncane we-Ascend 910, esanda kwethulwa emphakathini). Umsebenzi wayo ukuhlaziya amabhlokhi wedatha angena ohlelweni ukuze kwandiswe isilinganiso se-Read hit. Kunzima ukusho ukuthi kuzosebenza kanjani emsebenzini, ngoba... Namuhla isebenza kuphela ngokusho kwesifanekiso esinikeziwe futhi ayinalo ikhono lokufunda ngemodi ehlakaniphile. Ukubonakala kwemodi ehlakaniphile kuthenjiswa ku-firmware yesikhathi esizayo, cishe ekuqaleni konyaka ozayo.
Asiqhubekele ekwakhiweni kwezakhiwo. I-Huawei iqhubekile nokuthuthukisa ubuchwepheshe bayo be-Smart Matrix, esebenzisa indlela ephelele ye-mesh ekuxhumaniseni izingxenye. Kodwa uma ku-V5 lokhu bekuwukufinyelela kuphela kusuka kubalawuli kuya kumadiski, manje bonke abalawuli banokufinyelela kuwo wonke amachweba kukho kokubili i-Back-End ne-Front-End.
Ngenxa yesakhiwo esisha se-microservice, lokhu kuvumela futhi ukulinganisa komthwalo phakathi kwazo zonke izilawuli, ngisho noma kunelun eyodwa kuphela. I-OS yalo mugqa wamalungu afanayo yathuthukiswa kusukela phansi kuya phezulu, futhi ayizange nje ilungiselelwe ukusetshenziswa kwe-Flash drive. Ngenxa yokuthi zonke izilawuli zethu zinokufinyelela ezimbotsheni ezifanayo, uma kwenzeka isilawuli sihluleka noma siqalisa kabusha, umsingathi akalahlekelwa indlela eyodwa eya kusistimu yesitoreji, futhi ukushintshwa kwendlela kwenziwa kuleveli yesistimu yokulondoloza. Kodwa-ke, ukusebenzisa i-UltraPath kumsingathi akudingekile ngokuphelele. Okunye "ukulondoloza" lapho ufaka uhlelo inombolo encane yezixhumanisi ezidingekayo. Futhi uma ngendlela "yakudala" yabalawuli abangu-4 sizodinga izixhumanisi ezingu-8 ezivela ezimbonini ezingu-2, khona-ke esimweni seHuawei ngisho ne-2 izokwanela (angikhulumi manje mayelana nokwanela kokuphuma kwesixhumanisi esisodwa).
Njengakwinguqulo yangaphambilini, i-cache yomhlaba wonke ene-mirroring isetshenziswa. Lokhu kukuvumela ukuthi ulahlekelwe kufika kuzilawuli ezimbili ngesikhathi esisodwa noma izilawuli ezintathu ngokulandelana ngaphandle kokuphazamisa ukutholakala. Kodwa kubalulekile ukuqaphela ukuthi asizange sibone ukulinganisa okuphelele komthwalo phakathi kwezilawuli ezi-3 ezisele uma kwenzeka ukwehluleka okukodwa endaweni yedemo. Umthwalo wesilawuli esihlulekile uthathwe ngokuphelele ngomunye wabasele. Kungenzeka ukuthi ngenxa yalokhu kudingekile ukuvumela uhlelo lusebenze isikhathi eside kulokhu kucushwa. Kunoma yikuphi, ngizohlola lokhu ngemininingwane eminingi ngisebenzisa izivivinyo zami.
I-Huawei ibeka izinhlelo ezintsha njenge-End-to-End NVMe systems, kodwa namuhla i-NVMeOF ayikasekelwa ngaphambili, kuphela i-FC, iSCSI noma i-NFS. Ekupheleni kwalokhu noma ekuqaleni kokulandelayo, njengezinye izici, sithenjiswa ukwesekwa kwe-RoCE.
Amashalofu aphinde axhunywe kubalawuli abasebenzisa i-RoCE, futhi kune-drawback eyodwa ehlotshaniswa nalokhu - ukungabikho kokuxhumeka "kwe-loopback" kwamashalofu, njengoba kwakunjalo nge-SAS. Ngokubona kwami, lokhu kuseyiphutha elikhulu uma uhlela uhlelo olukhulu kakhulu. Iqiniso liwukuthi wonke amashalofu axhunyiwe ochungechungeni, futhi ukwehluleka kwelinye lamashalofu kubangela ukungafinyeleleki okuphelele kwabo bonke abanye abalandelayo. Kulokhu, ukuze kuqinisekiswe ukubekezelelana kwamaphutha, kuzodingeka sixhume wonke amashalofu kubalawuli, okuhlanganisa ukwanda kwenani elidingekayo lamachweba angemuva ohlelweni.
Futhi enye into okufanele ikhulunywe isibuyekezo esingaphazamisi (NDU). Njengoba ngishilo ngenhla, uHuawei usebenzise indlela yesiqukathi sokusebenzisa i-OS yolayini omusha we-Dorado, lokhu kukuvumela ukuthi ubuyekeze futhi uqale kabusha izinsizakalo ngaphandle kwesidingo sokuqalisa kabusha isilawuli ngokuphelele. Kuhle ukusho ngaso leso sikhathi ukuthi ezinye izibuyekezo zizoqukatha izibuyekezo ze-kernel, futhi kulokhu, ukuqalisa kabusha kwakudala kwabalawuli kwesinye isikhathi kusazodingeka ngesikhathi sokubuyekezwa, kodwa hhayi njalo. Lokhu kuzonciphisa umthelela walo msebenzi ohlelweni lokukhiqiza.
Ku-arsenal yethu, iningi lamalungu afanayo avela ku-NetApp. Ngakho-ke, ngicabanga ukuthi kuzoba okunengqondo uma ngenza ukuqhathanisa okuncane nezinhlelo okufanele ngisebenze kakhulu kuzo. Lona akuwona umzamo wokunquma ukuthi ubani ongcono nokuthi ubani omubi kakhulu noma okabani izakhiwo ezizuzisa kakhulu. Ngizozama ngokucophelela futhi ngaphandle kokushisekela ukuqhathanisa izindlela ezimbili ezihlukene zokuxazulula inkinga efanayo kubathengisi abahlukene. Yebo, vele, kulokhu sizocubungula izinhlelo zeHuawei "ngombono" futhi ngizophinde ngiphawule ngokuhlukana lawo maphuzu ahlelelwe ukuthi asetshenziswe ezinguqulweni ze-firmware ezizayo. Yiziphi izinzuzo engizibonayo njengamanje:
- Inombolo yamadrayivu e-NVMe asekelwe. Njengamanje iNetApp inama-288 awo, kanti iHuawei ine-1600-6400, kuya ngemodeli. Ngasikhathi sinye, amandla kaHuawei Max asebenzisekayo angama-32PBe, njengezinhlelo ze-NetApp (ukucacisa, bane-31.64PBe). Futhi lokhu naphezu kokuthi amadrayivu evolumu efanayo asekelwa (kufika ku-15Tb). UHuawei uchaza leli qiniso ngale ndlela: abazange babe nethuba lokuhlanganisa isiteji esikhulu. Ngokombono, abanawo umkhawulo wevolumu, kodwa abakakwazi ukuhlola leli qiniso okwamanje. Kodwa lapha kubalulekile ukuqaphela ukuthi amandla okushayela ama-flash namuhla aphakeme kakhulu, futhi esimweni sezinhlelo ze-NVMe sibhekene neqiniso lokuthi ama-drive angu-24 anele ukusebenzisa uhlelo lwe-top-end 2-controller. Ngokuvumelana nalokho, ukwanda okwengeziwe kwenani lamadiski ohlelweni ngeke nje kunikeze ukwanda kokusebenza, kodwa kuzoba nomthelela omubi ku-IOPS/Tb ratio. Vele, kufanelekile ukubona ukuthi zingaki izishayeli ze-4-controller systems 8000 kanye ne-16000 ezingabamba, ngoba ... Amakhono namandla e-Kunpeng 920 akukacaci ngokuphelele.
- Ukuba khona kuka-Lun njengomnikazi wezinhlelo ze-NetApp. Labo. Isilawuli esisodwa kuphela esingakwazi ukwenza imisebenzi nenyanga, kuyilapho esesibili sidlula i-IO kuyo ngokwayo. Izinhlelo zeHuawei, ngokuphambene nalokho, azinabo abanikazi kanye nokusebenza okunamabhulokhi wedatha (ukucindezela, ukuphindaphinda) kungenziwa yinoma yibaphi abalawuli, futhi kubhalwe kumadiski.
- Ayikho imbobo eyehlayo lapho isilawuli esisodwa sehluleka. Kwabanye, lesi sikhathi sibukeka sibucayi kakhulu. Okubalulekile ukuthi ukushintsha ngaphakathi kwesistimu yokugcina kufanele kwenzeke ngokushesha kunasohlangothini lomsingathi. Futhi uma esimweni se-NetApp efanayo, ekusebenzeni sithole iqhwa cishe imizuzwana emi-5 lapho sikhipha isilawuli futhi sishintsha izindlela, khona-ke ngokushintshela ku-Huawei kusadingeka sizilolonge.
- Asikho isidingo sokuqala kabusha isilawuli lapho sibuyekeza. Lokhu kuqale ukungikhathaza ikakhulukazi ngokukhishwa okuvamile kwezinguqulo ezintsha namagatsha e-firmware we-NetApps. Yebo, ezinye izibuyekezo zeHuawei zisazodinga ukuqaliswa kabusha, kodwa hhayi zonke.
- Izilawuli ezi-4 zeHuawei ngentengo yezilawuli ezimbili ze-NetApp. Njengoba ngishilo ngenhla, ngenxa yenqubomgomo yentengo ye-Huawei, ingaqhudelana ne-Mid-range namamodeli ayo asezingeni eliphezulu.
- Ukuba khona kwama-chips engeziwe kuzilawuli zeshalofu namakhadi embobo, okungenzeka ahloselwe ukuthuthukisa ukusebenza kahle kwesistimu.
Ububi nokukhathazeka ngokujwayelekile:
- Ukuxhumeka okuqondile kwamashalofu kuzilawuli noma isidingo senani elikhulu lamachweba angemuva ukuze kuxhunywe wonke amashalofu kuzilawuli.
- Ukwakhiwa kwe-ARM kanye nokuba khona kwenani elikhulu lama-chips - kuzosebenza kahle kangakanani, futhi ingabe ukusebenza kuzokwanela?
Ukukhathazeka okuningi nokwesaba kungaqedwa ngokuhlolwa komuntu siqu komugqa omusha. Ngithemba ukuthi ngokushesha ngemva kokukhululwa bazovela eMoscow futhi kuyoba okwanele kubo ukuze uthole ngokushesha eyodwa yokuhlolwa kwakho siqu. Kuze kube manje, singasho ukuthi ngokujwayelekile indlela yenkampani ibonakala iyathakazelisa, futhi umugqa omusha ubukeka uhle kakhulu uma uqhathaniswa nezimbangi zayo. Ukuqaliswa kokugcina kuphakamisa imibuzo eminingi, ngoba Sizobona izinto eziningi kuphela ekupheleni konyaka, futhi mhlawumbe ngo-2020 kuphela.
Source: www.habr.com