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The BIODASDSNID ioctl executes a 'Sense Path Group ID' command on a DASD ECKD device. The returned path group data allows user space programs to determine path state and path group ID of the channel paths to the device. Signed-off-by: Stefan Weinhuber <wein@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>