IOPIP30

Use this procedure to correct the problem when the system cannot find the required cache data for the attached disk units.

You were sent to this procedure from URC 9050.
  1. If the system has logical partitions, perform this procedure from the logical partition that reported the problem. To determine if the system has logical partitions, go to Determining if the system has logical partitions before continuing with this procedure.
  2. Did you just exchange the storage input/output (I/O) adapter as a result of a failure?
    • No: Continue with step 13.
    • Yes: Continue with the next step.
  3. Are you working with a 571F/575B card set?
    • No: Go to step 5.
    • Yes: Continue with the next step.
  4. Remove the 571F/575B card set. Create a new card set with the following:
    Note: Label all parts (both original and new) before moving them.
    • The new replacement 571F storage IOA.
    • The cache directory card from the original 571F storage IOA.
    • The original 575B auxiliary cache adapter.
    See Separating the 571F/575B card set and moving the cache directory card .
    • Ensure that the SCSI cable and the battery power cable on the top edge of the storage side of the card are connected to the top edge of the auxiliary cache side of the card.
    • Reinstall this card set into the system and go to step 6.
  5. Remove the I/O adapter. Install the new replacement storage I/O adapter with the following parts installed on it:
    Note: Label all parts (both old and new) before moving them.
    • The cache directory card from the original storage I/O adapter. On adapters with removable cache cards, the cache directory card will move with the removable cache card.
    • The removable cache card from the original storage I/O adapter (this applies to only the 571E and some 2780 I/O adapters).
    See System FRU locations for information on removing and replacing parts..
    • If the I/O adapter is attached to an auxiliary cache I/O adapter, ensure that the SCSI cable on the last port of the new replacement storage I/O adapter is connected to the auxiliary cache I/O adapter. For a list of auxiliary cache I/O adapters, see System parts .
  6. Did the 9050 SRC that sent you to this procedure occur on a type-D IPL?
    • Yes: Perform a type-D IPL and continue with the next step.
    • No: Continue with the next step.
  7. Has a new 9010 or 9050 SRC occurred in the Service Action Log or Product Activity Log?
    • No: Go to step 10.
    • Yes: Continue with the next step.
  8. Was the new SRC 9050?
    • No: Continue with the next step.
    • Yes: Contact your next level of support. This ends the procedure.
  9. The new SRC was 9010. Reclaim the cache storage. See Reclaiming IOP cache storage .
    Note: When an auxiliary cache I/O adapter that is connected to the storage I/O adapter logs a 9055 SRC in the Product Activity Log, the reclaim does not result in lost sectors. Otherwise, the reclaim does result in lost sectors, and the system operator might want to restore data from the most recent saved tape after you complete the repair.
  10. Are you working with a 571F/575B card set?
    • No: Go to step 12.
    • Yes: Continue with the next step.
  11. Remove the 571F/575B card set. Create a new card set with the following:
    • The new 571F storage IOA
    • The cache directory card from the new 571F storage IOA
    • The new 575B auxiliary cache adapter
    See Separating the 571F/575B card set and moving the cache directory card .
    • Ensure that the SCSI cable and the battery power cable on the top edge of the storage side of the card are connected to the top edge of the auxiliary cache side of the card.
    • Reinstall this card set into the system. This ends the procedure.
  12. Remove the I/O adapter. Install the new replacement storage I/O adapter that has the following parts installed on it:
    • The cache directory card from the new storage I/O adapter. On adapters with removable cache cards, the cache directory card will move with the removable cache card.
    • The removable cache card from the new storage I/O adapter (this applies to only the 571E and some 2780 I/O adapters).
    See System FRU locations .
    • If the I/O adapter is attached to an auxiliary cache I/O adapter, ensure that the SCSI cable on the last port of the new replacement storage I/O adapter is connected to the auxiliary cache I/O adapter. For a list of auxiliary cache I/O adapters, see System parts .
    This ends the procedure
  13. Identify the affected disk units using information in the Product Activity Log. Access SST/DST by doing one of the following:
  14. Did you perform a D IPL to get to DST?
    • Yes: Continue with the next step.
    • No: Perform the following steps:
      1. Access the Product Activity Log and display the SRC that sent you here, then view Additional Information to record the formatted log information. The Device Errors detected field indicates the total number of disk units that are affected. The Device Errors logged field indicates the number of disk units for which detailed information is provided. Under the Device heading, the unit address, type, and serial number are provided for up to three disk units. Additionally, the controller type and serial number for each of these disk units indicates the adapter to which the disk was last attached when it was operational.
        Note: You might find more than one Product Activity Log entry with the same Log ID. Access any additional entries by pressing Enter from the Display Detail Report for Resource screen. View Additional Information for each entry, and record the formatted log information. For example: You might find an entry for an xxxx902F SRC in the Product Activity Log when the array includes more than 10 disk units.
      2. Continue with step 16.
  15. A formatted display of hexadecimal information for Product Activity Log entries is not available. To interpret the hexadecimal information, see More information from hexadecimal reports . The Device Errors detected field indicates the total number of disk units that are affected. The Device Errors logged field indicates the number of disk units for which detailed information is provided. Under the Device heading, the unit address, type, and serial number are provided for up to three disk units. Additionally, the controller type and serial number for each of these disk units indicates the adapter to which the disk was last attached when it was operational.
    Note: You might find an entry for an xxxx902F SRC entry in the Product Activity Log when the array includes more than 10 disk units. To interpret the hexadecimal information for these additional disk units, see More information from hexadecimal reports .
  16. Has the I/O card or have the devices been repaired or reconfigured recently?
    • Yes: Continue with the next step.
    • No: Contact your next level of support for assistance. This ends the procedure.
  17. You can use one of the following repair options to correct the problem:
    • Reunite the adapter and disk units identified in previous steps so that the cache data can be written to the disk units. If you can find the devices and adapters and want to continue with this repair option, then continue with the next step.
    • If the data for the disk units identified in previous steps is not needed on this or any other system, initialize and format these disk units.
      Attention: This repair option causes a loss of customer data. If you want to continue with this repair option, go to step 19.
  18. Perform the following:
    1. Restore the adapter and disk units back to their original configuration. For more information, see System FRU locations . After the system writes cache data to the disk units and you power off the system normally, you can move the adapter and disk units to another location.
    2. Power on the system. For more information, see Powering on and powering off the system . Does the IP complete successfully?
      • No: Perform problem analysis to correct the new problem. This ends the procedure.
      • Yes: This ends the procedure.
  19. You have chosen to initialize and format the identified disk units. Perform the following steps:
    Attention: Performing the following steps causes a loss of customer data.
    1. If you are not already using dedicated service tools, perform an IPL to DST. For more information, see Performing an IPL to dedicated service tools . If you cannot perform a type A or B IPL, perform a type D IPL from removable media.
    2. Select Work with disk units. Did you get to DST with a Type D IPL?
      • Yes: Continue with the next step.
      • No: Select Work with disk unit recovery > Disk unit problem recovery procedures, then continue with the next step.
  20. Select Initialize and format disk unit.
  21. Follow the online instructions to format and initialize the disk units.
  22. Perform an IPL from disk. Does the IPL complete successfully?
    • No: Perform problem analysis and correct the new problem. This ends the procedure.
    • Yes: This ends the procedure.