Recovering an LCS group device

Ubuntu 22.04 LTS LPAR mode z/VM guest

You can use the recover attribute of an LCS group device to recover it in case of failure.

Procedure

Issue a command of the form: 
# echo 1 > /sys/bus/ccwgroup/drivers/lcs/<device_bus_id>/recover

Example

# echo 1 > /sys/bus/ccwgroup/drivers/lcs/0.0.d100/recover