Use this MAP to
resolve the following problem:
- Disk unit requires initialization before use (URC 9092)
The possible causes are:
- Disk is a previously failed disk from a disk array and was automatically
replaced by a Hot Spare disk.
- Disk is a previously failed disk from a disk array and was removed
and later reinstalled on a different adapter or different location
on this adapter.
- Appropriate service procedures were not followed when replacing
disks or reconfiguring the adapter, such as not using the Device
Concurrent Maintenance screen in iprconfig when concurrently
removing and installing disks (see Physical disks) or not performing a normal power down of the system
prior to reconfiguring disks and adapters.
- Disk is member of a disk array, but was detected subsequent to
the adapter being configured.
- Disk has multiple or complex configuration problems.
Step 3334–1
Identify the affected disks
by examining the error log and the Display Hardware Status screen.
For further details, see Viewing device status.
Go
to Step 3334–2.
Step 3334–2
Are there other
disk or adapter errors that have occurred at about the same time as
this error?
NO Go to Step 3334–4.
YES Go
to Step 3334–3.
Step 3334–3
Take action on
the other errors that have occurred at the same time as this error.
When
the problem is resolved then go to MAP 0410: Repair Checkout, in RS/6000
eServer pSeries Diagnostic Information for Multiple Bus Systems.
Step 3334–4
Have the disks
or adapter card been physically moved recently?
NO Go
to Step 3334–5.
YES Go
to Step 3334–6.
Step 3334–5
Is the data on
the disks needed for this or any other system?
NO Go
to Step 3334–7.
YES Go
to Step 3334–6.
Step 3334–6
There are three
possible ways to correct this problem. Perform only
one of
the following three options:
- IPL the system or logical partition (it may be necessary to boot
into Rescue mode), or reset the adapter by performing the following:
- Find the SCSI host number associated with the adapter by using
the Display Hardware Status screen. For more details see Viewing
the Status of Disks and Disk Arrays.
- Use the echo 1 > /sys/class/scsi_host/hostX/reset_host command
to reset the adapter, where X is the scsi host number from the previous
step.
- Restore the adapter and disks back to their original configuration.
Then, IPL the system or logical partition (it may be necessary to
boot into Rescue mode), or reset the adapter by performing
the following:
- Find the scsi host number associated with the adapter by using
the Display Hardware Status screen. For more details see Viewing device status.
- Use the echo 1 > /sys/class/scsi_host/hostX/reset_host command
to reset the adapter, where X is the scsi host number from the previous
step.
- Remove the disks from this adapter
When the problem is resolved then go to MAP 0410: Repair
Checkout, in RS/6000 eServer pSeries Diagnostic Information for
Multiple Bus Systems.
Step 3334–7
There are two
possible ways to correct the problem. Perform only
one of these
options.
- Format the disks, as follows:
Attention: All data on
the disk array will be lost.
- Run the iprconfig utility by typing iprconfig.
- Select Work with disk unit recovery.
- Select Initialize and format disk unit.
- Select the drives you wish to format then press Enter.
- If the disks are members of a disk array, delete the disk array.
See Deleting an IBM SAS RAID disk array.
Note: In some rare scenarios,
deleting the disk array will not have no effect on a disk and the
disk must be formatted instead.
When the problem is resolved then go to MAP 0410: Repair
Checkout, in RS/6000 eServer pSeries Diagnostic Information for
Multiple Bus Systems.
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