Recovering a device

Red Hat Enterprise Linux 9.2 LPAR mode z/VM guest

You can use the recover attribute of a qeth group device to recover it in case of failure.

About this task

issue journalctl to find messages that might inform you of a malfunctioning device.

Issue a command of the form:

# chzdev -a <device_bus_id> -a recover=1

or, using sysfs:

# echo 1 > /sys/bus/ccwgroup/drivers/qeth/<device_bus_id>/recover

# chzdev 0.0.a100 -a recover=1

Alternatively, using sysfs:

# echo 1 > /sys/bus/ccwgroup/drivers/qeth/0.0.a100/recover