Bug ID 4365729

Problem Summary: Attempts to put a device group into maintenance mode using the following command fail if file systems are mounted on the specified device group.

# scswitch -m -D device-group

Workaround: Unmount all file systems on the device group to be put into maintenance. A device group can be placed in maintenance mode only if the devices in that device group are unused, meaning no active users of devices exist in that device group, and all dependent filesystems are unmounted.