Kune musimboti Linux Seti yemapetchi yakarongwa kushandisa mudziyo weDRBD 9 distributed replicated block, iyo inobvumira kugadzirwa kweRAID-1 array yakagadzirwa kubva kumadhiraivha ane network-mirrored akabatana nemasisitimu akasiyana. Mutyairi achatanga aedzwa mubazi re linux-next uye opedziswa kubatanidzwa kwekernel. Linux 7.2.
Kushandiswa kweDRBD kwekare kwave kuri mukernel kubvira pavhezheni 2.6.33, yakaburitswa makore gumi nematanhatu apfuura. Kodhi yekernel yakavakirwa pabazi reDRBD 8, iro rakasiyana zvakanyanya nebazi reDRBD 9, rakaburitswa muna 2015 uye harienderane padanho reprotocol. Nekuda kweizvozvo, DRBD 9 yakagadzirwa semodule yekunze yakasiyana, isingaenderane nemodule yekernel yakakosha. Kushandiswa kweDRBD kwekernel kwakaramba kuripo uye kuri kumashure kweDRBD codebase iripo nemakore gumi kusvika gumi nemashanu. Mapeji anokurudzirwa akagadzirirwa kuvhara mukaha uyu.
DRBD inoita kuti zvikwanisike kusanganisa madhiraivha emasumbu emasumbu mune imwechete yekukanganisa-inoshivirira kuchengetedza. Kune maapplication uye sisitimu, chengetedzo yakadaro inoita senge block mudziyo wakafanana kune ese masisitimu. Paunenge uchishandisa DRBD, ese emunharaunda dhisiki mashandiro anotumirwa kune dzimwe node uye anowiriraniswa nemadhisiki emimwe michina. Kana imwe node ikatadza, chengetedzo inongoramba ichishanda uchishandisa manodhi asara. Kana kuwanikwa kweiyo node yakakundikana kwadzoreredzwa, mamiriro ayo anozounzwa otomatiki kusvika parizvino.
Chikamu chinoumba nzvimbo yekuchengetera chinogona kusanganisira ma node anosvika makumi matatu nemaviri ari mu network yemuno uye munzvimbo dzakapararira. nzvimbo dzedataKubatanidza mumasisitimu ekuchengetera akaparadzirwa kunoitwa mu network ine mesh—data rinoyerera kubva pa node kuenda kune node. Kudzokorora ma node kunogona kuitwa nenzira imwe chete kana kuti nenzira imwe chete. Semuenzaniso, ma node ari munzvimbo imwe chete anogona kushandisa synchronous replication, nepo ma node ari kure anogona kushandisa asynchronous replication pamwe nekuwedzera traffic compression uye encryption.
Bazi reDRBD 9 rakasiyana nekubvisa chikamu chekutakura, izvo zvakaita kuti zvikwanisike kushandisa nzira dzekutaurirana kwete pamusoro pe TCP/IP, asi zvakare uchishandisa RDMA/Infiniband. Zvichienzaniswa nekushandisa network yeIP yechinyakare, kubatanidza kupinda zvakananga kuRAM yeimwe komputa uchishandisa RDMA (Remote Direct Memory Access) kwakapeta kaviri mashandiro ekudzokorodza ukuwo kuchideredza mutoro weCPU ne50%. Saizi yepamusoro yekuchengetera yakasanganiswa yakawedzerwa kusvika kumanode makumi matatu nemaviri. DRBD 9 inewo modified node resynchronization logic, mechanism yakagadziriswazve yekukiya, yakawedzera rutsigiro rwenzvimbo dzemazita enetwork, automatic node status adjustment zvichibva pabasa, uye rutsigiro rwemacommits maviri echikamu uye non-blocking update propagation. 
Source: opennet.ru
