IOS105I
IOS1105I
DEVICE dev {BOXED | FORCED OFFLINE} BY UNCONDITIONAL RESERVE PROCESSING

Explanation

An error occurred on a channel path to a device. The system could only access the device through that channel path. For example, there was a reserve or an allegiance on the channel path.

One of the following occurred:
  • The reply to message IOS427A did not request recovery.
  • The device does not support the unconditional reserve command.
In the message text:
dev
The device number. The device number is prefixed by the subchannel set identifier when appropriate.
BOXED
The system boxed the device.
FORCED OFFLINE
The system forced the device offline.

System action

The system forces the device offline, or boxes the device, as follows:
  • The system ends I/O on the device.
  • New I/O requests result in permanent I/O errors.
  • The system performs no new allocations for the device.
  • If the device was online, the system marks it pending offline. A pending offline device goes offline when the following conditions occur in this order:
    1. The device is no longer allocated to any job.
    2. Allocation can get the necessary resources to process the request.
  • If the device was offline, it remains offline.

Operator response

If the system forced the device offline, do the following:
  • Consult your installation's operating procedures.
  • Enter a VARY dev,ONLINE command to bring the device online. Wait for the device to go entirely offline before doing so.
  • Contact hardware support.
If the system boxed the device, recover the boxed device as follows:
  1. Vary the boxed device offline to all sharing systems.
  2. Isolate the failing control unit for repair.
  3. Determine the range of affected devices.
  4. Resynchronize dynamic path selection (DPS) array information for all affected devices.
  5. Contact hardware support.
  6. Bring the device online to allow hardware support personnel to verify the data on the boxed device. Do one of the following:
    • Enter a DISPLAY UNITS command to see if the device is one of the following:
      • Offline and boxed (F-BOX)
      • Allocated and boxed (A-BOX)
    • If the device is offline and boxed, vary the device online by entering the following command:

      VARY dev,ONLINE

    • If the device is allocated and boxed, display the using job steps that are allocated to the device by entering the following command:

      DISPLAY U,,ALLOC,dev,1

      Follow your installation's procedures for unallocating using job steps.

      Vary the device offline, using the following command:

      VARY dev,OFFLINE

      Vary the device online, using the following command:

      VARY dev,ONLINE

    • If the device is allocated and boxed, but not offline, enter the following command:

      VARY dev,ONLINE,UNCOND

    • Verify the data on the volume.
  7. Identify and recover failing tasks.
  8. If you want other processors that share the device to access it, vary the device back online.
  9. Isolate the failing storage director for customer engineer.
  10. Identify and recover failing tasks.
  11. Contact hardware support.

Source

Input/output supervisor (IOS)

Module

IOSVURDT

Routing code

2,10

Descriptor code

4

Parent topic: IOS messages