On Sun Fire midrange systems, a CompactPCI (cPCI) I/O board cannot be unconfigured when Port 0 (P0) on that board is disabled. This problem exists in Solaris 10 and Solaris 9 software. It also exists in Solaris 8 software that has one or more of the following patches installed:
Patch ID 108528–11 through 108528–29
Patch ID 111372–02 through 111372–04
The error also occurs only during DR operations that involve cPCI boards. An error message similar to the following example is displayed:
# cfgadm -c unconfigure NO.IB7 cfgadm: Hardware specific failure: unconfigure N0.IB7: Device busy:/ssm@0,0/pci@1b,700000/pci@1
NO.IB7 is a CompactPCI I/O Board with P0 disabled.
Workaround: Disable the slots instead of Port 0.