LVM: Enhance option descriptions
Add descriptions to lvm_type option values.
@@ -53,7 +53,9 @@ volume_opts = [
'this requires lvm_mirrors + 2 PVs with available space'),
cfg.StrOpt('lvm_type',
default='auto',
- choices=['default', 'thin', 'auto'],
+ choices=[('default', 'Thick-provisioned LVM.'),
+ ('thin', 'Thin-provisioned LVM.'),
+ ('auto', 'Defaults to thin when supported.')],
help='Type of LVM volumes to deploy; (default, thin, or auto). '
'Auto defaults to thin if thin is supported.'),
cfg.StrOpt('lvm_conf_file',
