ZFS Storage Appliance DIMM 'OK' but 'size' is not reported.

Asset ID:	1-72-2379853.1
Update Date:	2018-03-28
Keywords:

Solution Type Problem Resolution Sure

Solution 2379853.1 : ZFS Storage Appliance DIMM 'OK' but 'size' is not reported.

Related Items


Sun ZFS Storage 7320
 Oracle ZFS Storage ZS5-4
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Related Categories


PLA-Support>Sun Systems>DISK>ZFS Storage>SN-DK: ZS

In this Document

Symptoms

Changes

Cause

Solution

Created from <SR 3-16627636011>

Applies to:

Oracle ZFS Storage ZS5-4 - Version All Versions to All Versions [Release All Releases]
Oracle ZFS Storage Appliance Racked System ZS5-2 - Version All Versions to All Versions [Release All Releases]
Oracle ZFS Storage ZS4-4 - Version All Versions to All Versions [Release All Releases]
Oracle ZFS Storage ZS3-4 - Version All Versions to All Versions [Release All Releases]
Oracle ZFS Storage ZS3-2 - Version All Versions to All Versions [Release All Releases]
7000 Appliance OS (Fishworks)

Symptoms

The 'size' is not reported for a DIMM.

ZFSSA:> maintenance hardware select chassis-000 select memory select memory-022 show
Properties:
          label = DIMM 0/11
        present = true
        faulted = false
   manufacturer = Samsung
          model = 32768MB DDR4 SDRAM DIMM
           part = 00000000,M386A4G40DM0-CPB
         serial = 00CE02174837983FE4

A 'size' line should follow the 'serial' line:

size = 34359738368

The kernel is also not recognizing the expected amount of memory.
In this example we have twenty-four 32GB DIMMs so should see 768GB but only 704GB is reported. (two DIMMs were missing 'size'.)

ZFSSA> raw appliance.sysinfo().hw_physmem
hw_physmem: 720763,

Changes

DIMM replaced.

Cause

The DIMM was faulted, however; after replacement it remained faulted in the appliance, though no new errors were reported.

The fault for the DIMM was then markedrepaired.

Solution

A reboot of the system after the fault was repaired is required for the DIMM to be recognized properly.

ZFSSA:> maintenance hardware select chassis-000 select memory select memory-022 show
Properties:
           label = DIMM 0/11
         present = true
         faulted = false
    manufacturer = Samsung
           model = 32768MB DDR4 SDRAM DIMM
            part = 00000000,M386A4G40DM0-CPB
          serial = 00CE02174837983FE4
            size = 34359738368

After a reboot the kernel was recognizing memory as expected.

ZFSSA> raw appliance.sysinfo().hw_physmem
hw_physmem: 786299,

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