Requeue

7.1 LPAR mode z/VM guest KVM guest

Use the aq_requeue sysfs attribute to requeue all DASD I/O requests to the block layer in case of an autoquiesce event.

About this task

A value of 1 requeues all I/O requests to the block layer in case of an autoquiesce event. Use a value of 0 to stop the device.

To stop the DASD device, write 0 to the aq_requeue attribute:
```
$ echo 0 > /sys/bus/ccw/0.0.1234/aq_requeue
```
where 0.0.1234 is the device-bus ID of the DASD.
To requeue all I/O requests to the block layer in case of an autoquiesce event, issue:
```
$ echo 1 > /sys/bus/ccw/0.0.1234/aq_requeue
```