When you need the host to access the masked storage device, unmask the paths to the device.

1

Unmask a path to the storage device by running the esxcli corestorage claiming unclaim command.

Run this command for each path to the storage device.

For example:

esxcli corestorage claiming unclaim -t location -A vmhba0 -C 0 -T 0 -L 149

2

Load path claiming rules into the VMkernel by running the esxcli corestorage claimrule load command.

3

Run the path claiming rules by entering the esxcli corestorage claimrule run.

Your host can now access the previously masked storage device.