Recovering a device

6.10 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

For example, error messages in /var/log/messages from the qeth, qdio, or cio kernel modules might inform you of a malfunctioning device.

Setting the recover attribute schedules recovery synchronously, however the recovery itself might take some time.

Procedure

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

Example

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