This command resets a controller, and it is disruptive to I/O operations.
Important:
When you reset a controller, the controller is removed from the data path and is not available for I/O operations until the reset operation is complete. If a host is using logical drives that are owned by the controller being reset, the I/O directed to the controller is rejected. Before resetting the controller, either make sure that the logical drives that are owned by the controller are not in use or make sure that a multi-path driver is installed on all of the hosts that use these logical drives.
reset controller [(a | b)]
Parameter | Description |
---|---|
controller | The controller that you want to reset. Valid controller identifiers are a or b, where a is the controller in slot A, and b is the controller in slot B. Enclose the controller identifier in square brackets ([ ]). If you do not specify a controller owner, the controller firmware returns a syntax error. |
The controller that receives the reset controller command resets the controller specified. For example, if the reset controller command is sent to controller A to request a reset of controller A, then controller A reboots itself by doing a soft reboot. If the reset controller command is sent to controller A to request a reset of controller B, then controller A holds controller B in reset and then releases controller B from reset, which is a hard reboot. A soft reboot in some products only resets the IOC chip. A hard reboot resets both the IOC and the expander chips in the controller.
5.20