5-张芸-Deep_dive_into_Docker_storage.pdf

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1、DEEPDIVEINTODOCKERSTORAGEVIVIANZHANG(张芸)@EMCEMCCONFIDENTIAL—INTERNALUSEONLY1WHOAMI？•FromEMCLabsChina•Focusoncloudcomputing–OpenStack–Cloudfoundry–Docker–Storage•Contactinfo–WeChat@vinoyun–Twitter@VivianZhang11–Email:vivian.zhang@emc.comEMCCONFIDENTIAL—INTERNALUSEONLY2AGENDA•D

2、ockerStorageMechanism•PersistentData•Flocker•EMCScaleIOandDocker•Q&AEMCCONFIDENTIAL—INTERNALUSEONLY3DOCKERSTORAGEMECHANISMEMCCONFIDENTIAL—INTERNALUSEONLY4WEALLKNOWTHAT•Dockerislightweight•DockerisfastEMCCONFIDENTIAL—INTERNALUSEONLY5WEALLKNOWTHAT•Dockerislightweight•Dockerisfa

3、stBUTHOW?EMCCONFIDENTIAL—INTERNALUSEONLY6LET’SSTARTFROMASIMPLESAMPLEEMCCONFIDENTIAL—INTERNALUSEONLY7WHATHAPPENED?•CreateaDockercontainerwithitsown:–filesystem–networkstack–processspace–etc.•Startwithabashprocess•InstallPython,andrunitEMCCONFIDENTIAL—INTERNALUSEONLY8WHATDIDNOT

4、HAPPEN?•NotmakeafullcopyoftheUbuntuimage•NotmodifytheUbuntuimageitself•NotaffectanyothercontainerEMCCONFIDENTIAL—INTERNALUSEONLY9STORAGEFEATURES•Justtrackofchangesbetweenthisimageandourcontainers.EMCCONFIDENTIAL—INTERNALUSEONLY10STORAGEFEATURES•Justtrackofchangesbetweenthisim

5、ageandourcontainers.Layer+Copy-on-WriteWebServerWebServer(WritableContainer)(WritableContainer)InstallPythonAddApache(Image)(WritableContainer)Ubuntu(BaseImage)EMCCONFIDENTIAL—INTERNALUSEONLY11STORAGEFEATURES•Justtrackofchangesbetweenthisimageandourcontainers.Layer+Copy-on-Wr

6、iteDockerislightweight!WebServerWebServer(WritableContainer)(WritableContainer)InstallPythonAddApache(Image)(WritableContainer)Ubuntu(BaseImage)EMCCONFIDENTIAL—INTERNALUSEONLY12STORAGEFEATURES•Justtrackofchangesbetweenthisimageandourcontainers.Layer+Copy-on-WriteDockerislight

7、weight!Dockerisfast!WebServerWebServer(WritableContainer)(WritableContainer)InstallPythonAddApache(Image)(WritableContainer)Ubuntu(BaseImage)EMCCONFIDENTIAL—INTERNALUSEONLY13STORAGEFEATURES•Justtrackofchangesbetweenthisimageandourcontainers.Layer+Copy-on-WriteDockerislightwei

8、ght!Dockerisfast!GraphDBWebServerWebServer(WritableContainer)(Writab