08.存儲Cinder→5.場景學習→06.Delete Volume

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背景：

1. 狀態爲 Available 的 volume 纔可以被 delete
2. 若是 volume 當前已經 attach 到 instance，須要先 detach 後才能 delete。

描述	詳細
向 cinder-api 發送 delete 請求 客戶（能夠是 OpenStack 最終用戶，也能夠是其餘程序）向 cinder-api 發送請求：「請 delete 指定的 volume。」 這裏咱們將 delete volume 「vol-1」。進入 GUI 操做菜單 Project -> Volumes -> Volumes。
cinder-api 將接收到 delete volume 的請求。查看c-api日誌文件：	1 2 3 4 5 Jun 20 19:30:25 controller devstack@c-api.service[31309]: INFO cinder.api.openstack.wsgi [None req-03b18f0a-eee4-4855-ad8c-a0dfc4fa068f admin admin] DELETE http://172.16.1.17/volume/v3/51743f081cb7477f9a1f4ccdf6490d8e/ volumes/f0a54ac7-5423-4794-8883-d753f6a903cd 1 2 3 4 Jun 20 19:30:25 controller devstack@c-api.service[31309]: INFO cinder.api.v3.volumes [None req-03b18f0a-eee4-4855-ad8c-a0dfc4fa068f admin admin] Delete volume with id: f0a54ac7-5423-4794-8883-d753f6a903cd
cinder-api 發送消息 cinder-api 發送消息 delete 消息。cinder-api 沒有打印發送消息的日誌，只能經過源代碼查看 /opt/stack/cinder/cinder/volume/api.py，方法爲 delete。
cinder-volume delete volume cinder-volume 執行 lvremove 命令 delete volume	1 2 3 4 5 6 Jun 20 19:30:27 controller cinder-volume[304]: DEBUG oslo_concurrency.processutils [None req-03b18f0a-eee4-4855-ad8c-a0dfc4fa068f admin None] CMD "sudo cinder-rootwrap /etc/cinder/rootwrap.conf lvremove --config activation { retry_deactivation = 1} -f stack-volumes-lvmdriver-1/volume-f0a54ac7-5423-4794-8883-d753f6a903cd" returned: 0 in 1.107s {{(pid=460) execute /usr/local/lib/python2.7/dist-packages/oslo_concurrency/processutils.py:409 1 2 3 4 Jun 20 19:30:27 controller cinder-volume[304]: I NFO cinder.volume.drivers.lvm [None req-03b18f0a-eee4-4855-ad8c-a0dfc4fa068f admin None] Successfully deleted volume: f0a54ac7-5423-4794-8883-d753f6a903cd