Unable to Unconfigure

Before you attempt a DR unconfigure operation:

• Devices must not be in use by the operating system

• Drivers must be detachable or suspendable

A device cannot be unconfigured or disconnected while it is in use. Disks attached to an I/O board must unmounted before any attempt is made to unconfigure or disconnect that board. Any attempt to unconfigure/disconnect a board whose devices are still in use will generate an error.

If an unconfiguration operation fails because an I/O board has a busy or open device, the board is left only partially unconfigured. The operation sequence stopped at the busy device.

To regain access to the devices which were not unconfigured, the board must be completely unconfigured and then reconfigured.

In such a case, the system will log messages similar to the following:

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NOTICE: unconfiguring dual-pci board in slot 7
NOTICE: dual-pci board in slot 7 partially unconfigured 
reason:sysc iohelp unconfigure: Device busy
output from sysctrl unconfigure is:detach failed: /pci@f,4000/SUNW,isptwo@3/sd@2,0
is busy

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To continue the unconfigure operation, unmount the device and retry the unconfigure operation. The board must be in the unconfigured state before you try to configure this board.