20.2. Dynamically setting DASDs online

Procedure

1. Use the cio_ignore utility to remove the DASD from the list of ignored devices and make it visible to Linux:

   # cio_ignore -r device_number

   Replace device_number with the device number of the DASD. For example:

   # cio_ignore -r 4b2e

2. Set the device online. Use a command of the following form:

   # chccwdev -e device_number

   Replace device_number with the device number of the DASD. For example:

   # chccwdev -e 4b2e

   For instructions on how to set a DASD online persistently, see Persistently setting DASDs online.