[PVE-User] about create/delete custom vdisk in storage

[alex.lu]

hi,
	I want to create or delete a custom vdisk in storage( ceph or other storage ) from gui or api
	
	how i can do it? 

	for example from cli (pvesh):
	create /nodes/{node}/storage/{storage}/content -filename <string> -size <string> -vmid <integer> [OPTIONS]

	this is the filename can customize?
	or extended pve code can to custom create it ?