An encapsulated root disk was taken off line because of reported errors. The
disk was reformatted via the format command. While trying to re-attach the
disk, vxdiskadm #5, we get the message

Error: vxvm: vxdisk error: Device c0t0d0s2 : online failed
Device path not valid.

We have another disk to replace c0t0d0s2, but would like to save a reboot
of the system because of SLA's.