LVM

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The default volume back-end uses local volumes managed by LVM.

This driver supports different transport protocols to attach volumes, currently iSCSI and iSER.

Set the following in your cinder.conf configuration file, and use the following options to configure for iSCSI transport:

    volume_driver = cinder.volume.drivers.lvm.LVMVolumeDriver
    iscsi_protocol = iscsi

Use the following options to configure for the iSER transport:

    volume_driver = cinder.volume.drivers.lvm.LVMVolumeDriver
    iscsi_protocol = iser

Table 2.17. Description of LVM configuration options
Configuration option = Default value	Description
[DEFAULT]
`lvm_conf_file` = `/etc/cinder/lvm.conf`	(StrOpt) LVM conf file to use for the LVM driver in Cinder; this setting is ignored if the specified file does not exist (You can also specify 'None' to not use a conf file even if one exists).
`lvm_mirrors` = `0`	(IntOpt) If >0, create LVs with multiple mirrors. Note that this requires lvm_mirrors + 2 PVs with available space
`lvm_type` = `default`	(StrOpt) Type of LVM volumes to deploy
`volume_group` = `cinder-volumes`	(StrOpt) Name for the VG that will contain exported volumes