What can happen if an over-subscribed thin pool becomes full?

A.
writes to unallocated extents on TDEV’s fail and an I/O error is returned. If the host is
booting from SAN, this may also result in a server hang condition.

B.
writes to unallocated extents on TDEV’s continue within cache and the virtual pool is
automatically expanded to the needed level.

C.
writes to unallocated extents on TDEV’s stay in a queued state until the storage
administrator can assign additional capacity.

D.
writes to unallocated extents on TDEV’s continue within cache and the virtual pool is not
automatically expanded to the needed level.