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查询镜像信息
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| # glance image-show 958aba73-cddd-46e6-ae3c-e90ef0f483f1 +------------------+----------------------------------------------------------------------------------+ | Property | Value | +------------------+----------------------------------------------------------------------------------+ | checksum | ecb6ae37e2c8ac57d4f89177a9b216a4 | | container_format | bare | | created_at | 2017-11-08T08:57:15Z | | direct_url | rbd://05777380-b983-11e7-b6df-525400017028/images/958aba73-cddd-46e6-ae3c- | | | e90ef0f483f1/snap | | disk_format | qcow2 | | id | 958aba73-cddd-46e6-ae3c-e90ef0f483f1 | | locations | [{"url": "rbd://05777380-b983-11e7-b6df-525400017028/images/958aba73-cddd-46e6 | | | -ae3c-e90ef0f483f1/snap", "metadata": {}}] | | min_disk | 0 | | min_ram | 0 | | name | test-image | | owner | a0e2e386e12c4635b2676b7fdd36993e | | protected | False | | size | 3999126016 | | status | active | | tags | [] | | updated_at | 2017-11-08T09:03:02Z | | virtual_size | None | | visibility | public | +------------------+----------------------------------------------------------------------------------+
# rbd info images/958aba73-cddd-46e6-ae3c-e90ef0f483f1 rbd image '958aba73-cddd-46e6-ae3c-e90ef0f483f1': size 3813 MB in 960 objects order 22 (4096 kB objects) block_name_prefix: rbd_data.fe2087216567e2 format: 2 features: layering, striping flags: stripe unit: 512 kB stripe count: 16 # rbd snap ls images/958aba73-cddd-46e6-ae3c-e90ef0f483f1 SNAPID NAME SIZE 30 snap 3813 MB
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镜像导出
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| # rbd export images/958aba73-cddd-46e6-ae3c-e90ef0f483f1@snap test-image.qcow2 Exporting image: 100% complete...done. # file test-image.qcow2 test-image.qcow2: QEMU QCOW Image (v3), 10737418240 bytes # qemu-img info test-image.qcow2 image: test-image.qcow2 file format: qcow2 virtual size: 10G (10737418240 bytes) disk size: 3.7G cluster_size: 65536 Format specific information: compat: 1.1 lazy refcounts: false refcount bits: 16 corrupt: false
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格式转换
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| # qemu-img convert -O raw test-image.qcow2 test-image.raw # qemu-img info test-image.raw image: test-image.raw file format: raw virtual size: 10G (10737418240 bytes) disk size: 4.5G
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至此,导出完成。