6.4. Configure the Volume Service

Procedure 6.7. Configuring openstack-cinder-volume to Use LVM Storage as a Back End

1. Create a physical volume:

   # pvcreate DEVICE
      Physical volume "DEVICE" successfully created

   Copy to Clipboard Toggle word wrap
   Replace DEVICE with the path to a valid, unused, device. For example:

   # pvcreate /dev/sdX

   Copy to Clipboard Toggle word wrap
2. Create a volume group:

   # vgcreate cinder-volumes DEVICE
      Volume group "cinder-volumes" successfully created

   Copy to Clipboard Toggle word wrap
   Replace DEVICE with the path to the device used when creating the physical volume. Optionally replace cinder-volumes with an alternative name for the new volume group.
3. Set the volume_group configuration key to the name of the volume group created in the previous step:

   # openstack-config --set /etc/cinder/cinder.conf \
      DEFAULT volume_group cinder-volumes

   Copy to Clipboard Toggle word wrap
4. Ensure that the correct volume driver for accessing LVM storage is in use by setting the volume_driver configuration key to cinder.volume.drivers.lvm.LVMVolumeDriver:

   # openstack-config --set /etc/cinder/cinder.conf \
      DEFAULT volume_driver cinder.volume.drivers.lvm.LVMVolumeDriver

   Copy to Clipboard Toggle word wrap

Procedure 6.8. Configure a SCSI Target Daemon

1. Install the targetcli package:

   # yum install targetcli

   Copy to Clipboard Toggle word wrap
2. Launch the target daemon and configure it to start at boot time:

   # systemctl start target.service
   # systemctl enable target.service

   Copy to Clipboard Toggle word wrap
3. Configure the volume service to use the lioadm iSCSI target user-land tool:

   # openstack-config --set /etc/cinder/cinder.conf \
      DEFAULT iscsi_helper lioadm

   Copy to Clipboard Toggle word wrap
4. Set the IP address on which the iSCSI daemon must listen (ISCSIIP):

   # openstack-config --set /etc/cinder/cinder.conf \
      DEFAULT iscsi_ip_address ISCSIIP

   Copy to Clipboard Toggle word wrap
   Replace ISCSI_IP with the IP address or host name of the server hosting the openstack-cinder-volume service.