Mufananidzo we Gerd Altmann en Pixabay
Munguva pfupi yapfuura nhau dzakabvarura izvo kambani yeveeam, (kambani inogadzira backup uye njodzi yekudzoreredza software), yakakurudzira kuti blksnap module ibatanidzwe muLinux kernel nekushandiswa kweiyo meshini yekugadzira snapshots ye block zvishandiso uye kuteedzera shanduko mu block zvishandiso.
Chinangwa de gadzira iyo module ndeyekuronga backup yeadhiraivha uye disks pasina kumisa basa, izvi zvakagadzirirwa kuti module ibvumire mamiriro azvino eiyo block mudziyo wese kutorwa muchidimbu, ichipa chikamu chega chekuchengetedza iyo isingaenderane nekuchinja kunoenderera.
Mhoroi vanhu vese.
Ini ndinokurudzira vhezheni yakagadziridzwa ye blksnap kernel module yekufunga kwako. Inokutendera iwe kuti ugadzire isingarambe inoramba snapshots yechero block mudziyo. Chinangwa chikuru chezvipikicha zvakadaro kugadzira backup yemidziyo yeblock.
Iyo snapshot inogadzirwa panguva imwe chete kune akawanda block zvishandiso, kuve nechokwadi chekuwirirana kwavo mukuwirirana mukuchengetedza.
Izvo zvinotaurwa kuti chinhu chakakosha by blksnap ndiko kugona kugadzira panguva imwe chete mifananidzo kune akawanda block zvishandiso kamwechete, zvichibvumira kwete chete kuve nechokwadi chekuvimbika kwedata padanho remudziyo weblock, asi zvakare kuwana kuenderana mumamiriro ezvinhu eakasiyana mabhuroki zvishandiso mu backup.
Kuteedzera shanduko kune block mudziyo subsystem (bdev), kugona kubatanidza mafirita anobvumidza iwe kubata I/O zvikumbiro kwawedzerwa. blksnap inoshandisa sefa iyo inobata zvikumbiro zvekunyora, inoverenga kukosha kwekare, uye inoichengeta kune yakaparadzana shanduko rondedzero inosarudza mamiriro eiyo snapshot.
Nenzira iyi, iyo pfungwa yekushanda neyakavharika mudziyo haichinji, kurekodha kune yekutanga block mudziyo kunoitwa se-zviri, zvisinei nemifananidzo, iyo inobvisa mukana wehuori hwe data uye inodzivirira matambudziko kunyangwe pakaitika zvikanganiso zvisingatarisirwi zvakakomba. mu blksnap uye kufashukira nzvimbo yakagadzirirwa shanduko.
Iyo inopokana siyana yezvikamu inogona kushandiswa pane chero block mudziyo kuchengetedza nekukurumidza shanduko. Saizi yekuchengetera shanduko inogona kuwedzerwa mushure mekunge snapshot yagadzirwa nekuwedzera mitsva yezvikamu.
Izvi zvinokutendera kuti ugadzire imwe faira diff chitoro pane faira system iyo inogona kutora nzvimbo yese yechivharo mudziyo uye kukura iyo diff chitoro sezvinodiwa.
The module inobvumirawo kuona kuti zvidhinha zvipi zvakachinjwa pakati pezvichangoburwa uye chero zvakapfuura snapshots, izvo zvinogona kubatsira kumushandisi kuita ekuwedzera backups.
Nezve chikamu chekuchengetedza shanduko, maererano nemamiriro eiyo snapshot, inotaurwa kuti huwandu husingaverengeki hwezvikamu hunogona kupihwa pane chero mudziyo wekuvhara, uchikubvumidza iwe kuchengetedza shanduko kuparadzanisa mafaera mukati meFS pane block zvishandiso. Saizi yenzvimbo yekuchengetedza shanduko inogona kuwedzerwa chero nguva, kunyangwe mushure mekunge snapshot yagadzirwa.
Kuti ushande ne snapshots, iyo blksnap yekuraira mutsara utility uye blksnap.so raibhurari yakagadziridzwa, iyo inokutendera kuti uwirirane ne kernel module kuburikidza neoctl mafoni kubva munzvimbo yemushandisi.
Blksnap yakavakirwa pane kodhi yeveeamsnap module, inova chikamu cheVeeam Agent yeLinux chigadzirwa, asi yakagadziridzwa patsva yekutumira maratidziro muchikamu chikuru cheLinux kernel.
Musiyano wepfungwa pakati pe blksnap neveeamsnap kushandiswa kwesefa system yakanamatira kune block mudziyo, pane yakaparadzana bdevfilter chikamu chinobata I/O.
Finalmente kana iwe uchifarira kuziva zvakawanda nezvazvo, unogona kutarisa zvinyorwa mumatsamba ekutumira Mune inotevera chinongedzo.