#qemu-img rebase -b /opt/cloud_backend/base/ubuntu.img /opt/cloud_backend/instances/c1322944-9d1c-11e3-bda8-485b39433121/root #qemu-img rebase -b /opt/cloud_backend/ba
阅读背景：
qemu-img: Could not open old backing file..._heybob的专栏
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