| Asset ID: |
1-72-1947203.1 |
| Update Date: | 2014-11-27 |
| Keywords: | |
Solution Type
Problem Resolution Sure
Solution
1947203.1
:
Exadata: Celldisk Shows "Not Present" When Hard Disk Status Is Fine
| Related Items |
- Exadata Database Machine X2-2 Hardware
|
| Related Categories |
- PLA-Support>Eng Systems>Exadata/ODA/SSC>Oracle Exadata>DB: Exadata_EST
|
Created from <SR 3-9816940521>
Applies to:
Exadata Database Machine X2-2 Hardware - Version All Versions and later
Information in this document applies to any platform.
Symptoms
[root@cdrqcel03 ~]# cellcli -e list celldisk | grep "not present"
CD_05_cdrqcel11 not present
Cause
From lun details output :
====================
.
.
name: 0_4
cellDisk: CD_04_cdrqcel11
deviceName: /dev/sde
diskType: HardDisk
id: 0_4
isSystemLun: FALSE
lunAutoCreate: FALSE
lunSize: 557.861328125G
lunUID: 0_4
physicalDrives: 20:4
raidLevel: 0
lunWriteCacheMode: "WriteBack, ReadAheadNone, Direct, No Write Cache if Bad BBU"
status: normal
name: 0_6
cellDisk: CD_06_cdrqcel11
deviceName: /dev/sdf
diskType: HardDisk
id: 0_6
isSystemLun: FALSE
lunAutoCreate: FALSE
lunSize: 557.861328125G
lunUID: 0_6
physicalDrives: 20:6
raidLevel: 0
lunWriteCacheMode: "WriteBack, ReadAheadNone, Direct, No Write Cache if Bad BBU"
status: normal
.
.
lun 0_5 is missing
From physical disk details output :
============================
.
.
name: 20:5
deviceId: 21
diskType: HardDisk
enclosureDeviceId: 20
errMediaCount: 0
errOtherCount: 0
foreignState: false
makeModel: "SEAGATE ST360057SSUN600G"
physicalFirmware: 0B25
physicalInsertTime: 2013-09-07T08:58:15-04:00
physicalInterface: sas
physicalSerial: E0C53H
physicalSize: 558.9109999993816G
slotNumber: 5
status: normal
Physical disk status is normal.
Solution
Please follow the below mentioned action plan to create the lun manually :
i) check the pinned cache
# /opt/MegaRAID/MegaCli/MegaCli64 -GetPreservedCacheList -a0
ii) Discard the cache for any disks that show on the list:
#/opt/MegaRAID/MegaCli/MegaCli64 -DiscardPreservedCache -L5 -force -a0
The flag -L will specify the slot number. Repeat for all disks on the preserved cache list.
iii) Validate that cache was discarded:
# /opt/MegaRAID/MegaCli/MegaCli64 -GetPreservedCacheList -a0
iv) Create the LUN
#/opt/MegaRAID/MegaCli/MegaCli64 -CfgLdAdd -R0 [20:5] WB NORA Direct NoCachedBadBBU -strpsz1024 -a0
Repeat for all disks that are having this problem.
v) now check Lun is created or not
cellcli> list lun
Attachments
This solution has no attachment
