08.存储Cinder→5.场景学习→12.Ceph Volume Provider→5.Detach Volume

返回总目录

背景：

vol-1：

c1-1：

描述

详细

1. 将ceph volume type的volume attach到instance c1上

2. 我们重点关注nova-compute 如何将vol-1从c1上detach。查看nova-compute日志
1. 通过curl请求获得volume。

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Jun 27 19:41:54 controller nova-compute[7060]: INFO nova.compute.manager [None req-6073abe1-b6a6-4f69-b940-8e69d66a6ad7 admin admin] [instance: f092dfe4-365b-4dd6-8867-76a311399782] Detaching volume 823dfaa9-a41c-4df7-a165-30db20b5b1c7

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Jun 27 19:41:54 controller nova-compute[7060]: DEBUG cinderclient.v3.client [None req-6073abe1-b6a6-4f69-b940-8e69d66a6ad7 admin admin] REQ: curl -g -i -X GET http://172.16.1.17/volume/v3/c1e57b427f934cadbe32750b1b8ccfd8/volumes /823dfaa9-a41c-4df7-a165-30db20b5b1c7 -H "OpenStack-API-Version: volume 3.48" -H "User-Agent: python-cinderclient" -H "X-OpenStack-Request-ID: req-6073abe1-b6a6-4f69-b940-8e69d66a6ad7" -H "Accept: application/json" -H "X-Auth-Token: {SHA1}47e5ca14354428cab7b8095abe1d6420c8df9553" {{(pid=7060) _http_log_request /usr/local/lib/python2.7/dist-packages/keystoneauth1/session.py:372

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Jun 27 19:41:54 controller nova-compute[7060]: RESP BODY: {"volume": {"migration_status": null, "provider_id": null, "attachments": [{"server_id": "f092dfe4-365b-4dd6-8867-76a311399782", "attachment_id": "b030252b-a04d-4cc7-b682-b3a38c1e8937", "attached_at": "2019-06-27T07:34:09.000000", "host_name": "controller", "volume_id": "823dfaa9-a41c-4df7-a165-30db20b5b1c7", "device": "/dev/vdb", "id": "823dfaa9-a41c-4df7-a165-30db20b5b1c7"}], "links": [{"href": "http://172.16.1.17/volume/v3/c1e57b427f934cadbe32750b1b8ccfd8/volumes /823dfaa9-a41c-4df7-a165-30db20b5b1c7", "rel": "self"}, {"href": "http://172.16.1.17/volume/ c1e57b427f934cadbe32750b1b8ccfd8/volumes/823dfaa9-a41c-4df7-a165-30db20b5b1c7", "rel": "bookmark"}], "availability_zone": "nova", "os-vol-host-attr:host": "controller@ceph#ceph", "encrypted": false, "updated_at": "2019-06-27T11:41:54.000000", "replication_status": null, "snapshot_id": null, "id": "823dfaa9-a41c-4df7-a165-30db20b5b1c7", "size": 1, "user_id": "7a2243af10174653931f76c748209551", "os-vol-tenant-attr:tenant_id": "c1e57b427f934cadbe32750b1b8ccfd8", "os-vol-mig-status-attr:migstat": null, "metadata": {"attached_mode": "rw"}, "status": "detaching", "description": "", "multiattach": false, "service_uuid": "a01f1424-3912-4b36-88e0-7fd8e1d5310a", "source_volid": null, "consistencygroup_id": null, "os-vol-mig-status-attr:name_id": null, "name": "vol-1", "bootable": "false", "created_at": "2019-06-27T07:31:09.000000", "volume_type": "ceph", "group_id": null, "shared_targets": false

2. Raise DeviceNotFound if the device isn't found during detach

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Jun 27 19:41:54 controller nova-compute[7060]: INFO nova.virt.block_device [None req-6073abe1-b6a6-4f69-b940-8e69d66a6ad7 admin admin] [instance: f092dfe4-365b-4dd6-8867-76a311399782] Attempting to driver detach volume 823dfaa9-a41c-4df7-a165-30db20b5b1c7 from mountpoint /dev/vdb

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Jun 27 19:41:54 controller nova-compute[7060]: DEBUG nova.virt.libvirt.guest [None req-6073abe1-b6a6-4f69-b940-8e69d66a6ad7 admin admin] Attempting initial detach for device vdb {{(pid=7060) detach_device_with_retry /opt/stack/nova/nova/virt/libvirt/guest.py:430

3. detach device xml，成功detach掉volume

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Jun 27 19:41:54 controller nova-compute[7060]: DEBUG nova.virt.libvirt.guest [None req-6073abe1-b6a6-4f69-b940-8e69d66a6ad7 admin admin] detach device xml: <disk type="network" device="disk"> <driver name="qemu" type="raw" cache="writeback" discard="unmap"/> <source protocol="rbd" name="volumes/volume-823dfaa9-a41c-4df7-a165-30db20b5b1c7"> <host name="172.16.1.17" port="6789"/> </source> <target bus="virtio" dev="vdb"/> <serial>823dfaa9-a41c-4df7-a165-30db20b5b1c7</serial> <address type="pci" domain="0x0000" bus="0x00" slot="0x06" function="0x0"/> </disk> {{(pid=7060) detach_device /opt/stack/nova/nova/virt/libvirt/guest.py:481

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Jun 27 19:41:54 controller nova-compute[7060]: DEBUG nova.virt.libvirt.guest [None req-6073abe1-b6a6-4f69-b940-8e69d66a6ad7 admin admin] Successfully detached device vdb from guest. Persistent? 1. Live? True {{(pid=7060) _try_detach_device /opt/stack/nova/nova/virt/libvirt/guest.py:403

root@controller:~# vim /etc/libvirt/qemu/instance-00000001.xml

4. 通过curl请求delete attachment

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Jun 27 19:41:54 controller nova-compute[7060]: DEBUG cinderclient.v3.client [None req-6073abe1-b6a6-4f69-b940-8e69d66a6ad7 admin admin] REQ: curl -g -i -X DELETE http://172.16.1.17/volume/v3/c1e57b427f934cadbe32750b1b8ccfd8/attachments /b030252b-a04d-4cc7-b682-b3a38c1e8937 -H "OpenStack-API-Version: volume 3.44" -H "User-Agent: python-cinderclient" -H "X-OpenStack-Request-ID: req-6073abe1-b6a6-4f69-b940-8e69d66a6ad7" -H "Accept: application/json" -H "X-Auth-Token: {SHA1}47e5ca14354428cab7b8095abe1d6420c8df9553" {{(pid=7060) _http_log_request /usr/local/lib/python2.7/dist-packages/keystoneauth1/session.py:372

1 2	Jun 27 19:41:55 controller nova-compute[7060]: RESP BODY: {"attachments": []}

3. 查看cinder-volume日志
1. 删除attachment

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Jun 27 19:41:55 controller cinder-volume[9796]: INFO cinder.volume.manager [req-6073abe1-b6a6-4f69-b940-8e69d66a6ad7 req-04307c40-9d7e-417a-8325-c63efc6ee332 admin None] Terminate volume connection completed successfully.

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Jun 27 19:41:55 controller cinder-volume[9796]: DEBUG cinder.volume.manager [req-6073abe1-b6a6-4f69-b940-8e69d66a6ad7 req-04307c40-9d7e-417a-8325-c63efc6ee332 admin None] Deleting attachment b030252b-a04d-4cc7-b682-b3a38c1e8937. {{(pid=9947) _do_attachment_delete /opt/stack/cinder/cinder/volume/manager.py:4543

4. 至此 detach volume 操作已经完成，GUI 也会更新 volume 的 detach 信息