1 chvdisk
2  -name new_name_arg
2  -cache
2.1 readwrite
2.1 readonly
2.1 none
2.2?  -force
2  -rate throttle_rate
2.1?  -unitmb
2  -udid vdisk_udid
2? 
2  -warning disk_size
2.1?  -unit
2.1.1 b
2.1.1 kb
2.1.1 mb
2.1.1 gb
2.1.1 tb
2.1.1 pb
2 disk_size_percentage %
2? 
2  -copy id
2  -autoexpand
2.1 on
2.1 off
2.2? 
2.2  -copy id
2  -primary copy_id
2  -syncrate syncrate
2  -easytier
2.1 on
2.1 off
2.2?  -copy id
2  -mirrorwritepriority
2.1 latency 
2.1 redundancy
3  -volumegroup
3 volumegroup
3 novolumegroup
4  -novolumegroup  -backup cloud
5? 
5  -enable  -account
5.1 cloud_account_name
5.1 cloud_account_id
5.1.1?  -backupgrainsize
5.1.1.1 64
5.1.1.1 256
5  -disable
6 vdisk_name
6 vdisk_id