"""Grow a stack of devices.
"""
- if len(params) < 4:
- raise ValueError("Received only 3 parameters in blockdev_grow,"
- " old master?")
+ if len(params) < 5:
+ raise ValueError("Received only %s parameters in blockdev_grow,"
+ " old master?" % len(params))
cfbd = objects.Disk.FromDict(params[0])
amount = params[1]
dryrun = params[2]