DPM partition example

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You can initiate a dump process on a DPM partition from a Hardware Management Console (HMC).

Before you begin

SCSI dump devices are FC-attached disk volumes. In DPM mode, the HMC interface presents such disk volumes as part of storage groups of type FCP. To select a SCSI volume as a dump device, you must know its storage group and the UUID that identifies it.

About this task

The following description refers to an HMC.

As an alternative to the steps that follow, you can also use the HMC Web Services API to trigger the dump process. For more information and an example, see Example for triggering a DPM partition dump.

Procedure

  1. In the navigation pane of the HMC, expand Systems Management and select the hardware system that you want to work with.
    A table of DPM partitions is displayed on the Partitions tab in the content area.
  2. Select the partition for which you want to initiate the dump.
  3. In the Tasks area, expand Recovery and click Dump
    Figure 1 shows an example of an HMC with a selected hardware system and partition. The Dump task can be seen in the Recovery list within the Tasks area.
    Figure 1. HMC with the Dump task

    This graphic is described in the preceding text.
  4. From the storage group table, select the storage group for your dump device. For SCSI dump the storage group is of type FCP.
  5. In the volume list, select the dump device.
  6. Type 0 in the Boot program selector field.
  7. Accept the defaults for the remaining fields.
    Figure 2 shows a Dump panel with all entries and selections that are required to start the SCSI dump process.
    Figure 2. Dump panel with a storage group of type FCP selected

    Screen capture of the Dump panel with the selections and entries as described in the preceding text.

    Optionally, you can specify dump tool parameters in the OS load parameter field. For example, for the SCSI dump tool, you can specify dump_debug=3 to set the level of debug messages. For more information, see the zipl information in Device Drivers, Features, and Commands on Red Hat® Enterprise Linux® 9.2, SC34-7750.

  8. Click OK to start the dump process.
  9. Wait until the dump process completes. Open the Operating System Messages tab for progress and error information.

Results

When the dump has completed successfully, you can IPL Linux again.