08.存储Cinder→5.场景学习→10.Bootable Volume

返回总目录

背景：

描述

详细

1. Volume 除了可以用作 instance 的数据盘，也可以作为启动盘（Bootable Volume）。创建Volume，此时选择Volume Source为image，创建后可以看到该volume是Bootable的。

2. volume创建过程同未指定Source基本一致。在cinder-volume的CreateVolumeFromSpecTask执行时，会克隆镜像到volume，从source为image创建volume，同时也会标记新创建的volume为bootable

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Jun 24 10:23:18 controller cinder-volume[9747]: DEBUG cinder.volume.manager [None req-bb293b6d-e545-4c7c-ab1f-0e13eb985f0f admin None] Task 'cinder.volume.flows.manager.create_volume.CreateVolumeFromSpecTask;volume:create' (755e4775-3fa9-4279-a9ac-9a4bda7bda4c) transitioned into state 'RUNNING' from state 'PENDING' {{(pid=9891) _task_receiver /usr/local/lib/python2.7/dist-packages/taskflow/listeners/logging.py:194

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Jun 24 10:23:18 controller cinder-volume[9747]: DEBUG cinder.volume.flows.manager.create_volume None req-bb293b6d-e545-4c7c-ab1f-0e13eb985f0f admin None] Cloning 0b2f9486-5433-4321-a1a8-5acec04d1b03 from image 0b8481c1-62e5-481c-ab60-a0e4d2676430 at location (None, None). {(pid=9891) _create_from_image /opt/stack/cinder/cinder/volume/flows/manager/create_volume.py:880}}

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Jun 24 10:23:20 controller cinder-volume[9747]: DEBUG cinder.volume.flows.manager.create_volume [None req-8fc4b821-b4c7-4892-a840-8f21c1af0fbb None None] Creating from source image-volume 8461a721-a77b-4b59-977d-9f65c00ce7ce {{(pid=9891) _create_from_image_cache /opt/stack/cinder/cinder/volume/flows/manager/create_volume.py:702

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Jun 24 10:23:23 controller cinder-volume[9747]: DEBUG cinder.volume.flows.manager.create_volume [None req-8fc4b821-b4c7-4892-a840-8f21c1af0fbb None None] Marking volume 0b2f9486-5433-4321-a1a8-5acec04d1b03 as bootable. {{(pid=9891) _enable_bootable_flag /opt/stack/cinder/cinder/volume/flows/manager/create_volume.py:474

3. 创建好的volume可用于launch instance