[root@controller ~]# cinder service-list
+------------------+-------------+------+---------+-------+----------------------------+-----------------+
| Binary | Host | Zone | Status | State | Updated_at | Disabled Reason |
+------------------+-------------+------+---------+-------+----------------------------+-----------------+
| cinder-scheduler | controller | nova | enabled | up | 2019-04-17T18:15:24.000000 | - |
| cinder-volume | compute@lvm | nova | enabled | down | 2019-04-17T18:15:20.000000 | - |
+------------------+-------------+------+---------+-------+----------------------------+-----------------+cinder-volume服務沒起來 已經重啓服務也還是down狀態，啓動日誌看看有沒有報錯
[root@controller ~]# systemctl restart openstack-cinder-volume.service
[root@controller log]# tail -f messages
Apr 17 18:17:33 controller cinder-volume: 2019-04-17 18:17:33.112 3085 ERROR cinder.volume.manager Stderr: u' Volume group "cinder-volumes" not found\n Cannot process volume group cinder-volumes\n'
Apr 17 18:17:33 controller cinder-volume: 2019-04-17 18:17:33.112 3085 ERROR cinder.volume.manager
Apr 17 18:17:33 controllern cinder-volume: 2019-04-17 18:17:33.337 3085 INFO cinder.volume.manager [req-1c834e71-3c13-474e-8f96-8391d7d471f7 - - - - -] Initializing RPC dependent components of volume driver LVMVolumeDriver (3.0.0)
Apr 17 18:17:33 controller cinder-volume: 2019-04-17 18:17:33.339 3085 WARNING cinder.volume.drivers.lvm [req-1c834e71-3c13-474e-8f96-8391d7d471f7 - - - - -] Unable to update stats on non-initialized Volume Group: cinder-volumes
Apr 17 18:17:33 controller cinder-volume: 2019-04-17 18:17:33.355 3085 INFO cinder.volume.manager [req-1c834e71-3c13-474e-8f96-8391d7d471f7 - - - - -] Driver post RPC initialization completed successfully.大致報錯信息是指找不到cinder-volumes這個卷組
[root@controller~]# vgs 沒有卷組
[root@controlle ~]# pvcreate /dev/vda7 創建一個物理卷
[root@controlle ~]# vgcreate cinder-volumes /dev/vda7 創建卷組
[root@controller ~]# vgs
VG #PV #LV #SN Attr VSize VFree
cinder-volume 1 0 0 wz--n- 4.75g 4.75g 現在有了
#再去看一下配置文件 確保萬一
[lvm]
volume_group = cinder-volumes
#重啓服務
[root@controller ~]# systemctl restart openstack-cinder-volume.service target.service
[root@controller ~]# cinder service-list
+------------------+--------------+------+---------+-------+----------------------------+-----------------+
| Binary | Host | Zone | Status | State | Updated_at | Disabled Reason |
+------------------+--------------+------+---------+-------+----------------------------+-----------------+
| cinder-scheduler | controller | nova | enabled | up | 2019-04-17T18:36:09.000000 | - |
| cinder-volume | compute@lvm | nova | enabled | up | 2019-04-17T18:36:04.000000 | - |
+------------------+--------------+------+---------+-------+----------------------------+-----------------+這樣就解決了。