Oracle Exadata Hardware
 
Exadata Database Machine X2-2 Half Rack
 
Exadata Database Machine X2-2 Full Rack
 
Exadata Database Machine X2-2 Hardware
 
Exadata Database Machine X2-8
 
Exadata Database Machine X2-2 Qtr Rack
 

PLA-Support>Database Technology>Engineered Systems>Oracle Exadata>DB: Exadata_EST
 

If MegaCli64 is zero byte in size or is corrupt,then using cellcli command will show missing and failed disks

Applies to:

Symptoms

 Exadata storage cell reports ALL disks as not present,yet  drives can be seen by using the lsscsi command and cell continues to function.

# cellcli -e "list physicaldisk"

         24:0    E00T1M  not present
         24:1    E022E9  not present
         24:2    E01XMJ  not present
         24:3    E0116R  not present
         24:4    E0236K  not present
         24:5    E01E4S  not present
         24:6    E00YY7  not present
         24:7    E01RAL  not present
         24:8    E01GNG  not present
         24:9    E0245X  not present
         24:10   E00FLM  not present
         24:11   E01SC9  not present

# cellcli -e list physicaldisk where status!=normal

         24:0    E00T1M  not present
         24:1    E022E9  not present
         24:2    E01XMJ  not present
         24:3    E0116R  not present
         24:4    E0236K  not present
         24:5    E01E4S  not present
         24:6    E00YY7  not present
         24:7    E01RAL  not present
         24:8    E01GNG  not present
         24:9    E0245X  not present
         24:10   E00FLM  not present
         24:11   E01SC9  not present

# lsscsi

[0:0:24:0]   enclosu LSILOGIC SASX28 A.1       502E  -
[0:2:0:0]    disk    LSI      MR9261-8i        2.12  /dev/sda
[0:2:1:0]    disk    LSI      MR9261-8i        2.12  /dev/sdb
[0:2:2:0]    disk    LSI      MR9261-8i        2.12  /dev/sdc
[0:2:3:0]    disk    LSI      MR9261-8i        2.12  /dev/sdd
[0:2:4:0]    disk    LSI      MR9261-8i        2.12  /dev/sde
[0:2:5:0]    disk    LSI      MR9261-8i        2.12  /dev/sdf
[0:2:6:0]    disk    LSI      MR9261-8i        2.12  /dev/sdg
[0:2:7:0]    disk    LSI      MR9261-8i        2.12  /dev/sdh
[0:2:8:0]    disk    LSI      MR9261-8i        2.12  /dev/sdi
[0:2:9:0]    disk    LSI      MR9261-8i        2.12  /dev/sdj
[0:2:10:0]   disk    LSI      MR9261-8i        2.12  /dev/sdk
[0:2:11:0]   disk    LSI      MR9261-8i        2.12  /dev/sdl

In addition when /opt/MegaRAID/MegaCli/MegaCli64 is run it will not produce any output ,neither will sundiag collections show any output from MegaCli64 commands.

Cause

 It is found that the file /opt/MegaRAID/MegaCli/MegaCli64 has become corrupted or is zero bytes in size .

This can be checked by issung the MegaCli64 help  command

# /opt/MegaRAID/MegaCli/MegaCli64 -h

This will not produce any output

Solution

 Copy /opt/MegaRAID/MegaCli/MegaCli64 from another storage cell using the exact same image version.This can be checked by first running

# /usr/local/bin/imageinfo

then compare the outputs and ensure they are the same version.Then copy the good version to the cell with the problem into the directory /opt/MegaRAID/MegaCli/ , ensure the new MegaCli64 file has the correct permissions

# ls -l /opt/MegaRAID/MegaCli/MegaCli64

-rwxr-xr-x 1 root root 2570568 Oct 24  2011 /opt/MegaRAID/MegaCli/MegaCli64

retest and ensure help output is displayed.

# /opt/MegaRAID/MegaCli/MegaCli64 -h

Check all disks are now good,the following command should not provide any output.

# cellcli -e list physicaldisk where status!=normal

And the following now shows all disks are normal.

# cellcli -e "list physicaldisk"

         24:0            E00T1M          normal
         24:1            E022E9          normal
         24:2            E01XMJ          normal
         24:3            E0116R          normal
         24:4            E0236K          normal
         24:5            E01E4S          normal
         24:6            E00YY7          normal
         24:7            E01RAL          normal
         24:8            E01GNG          normal
         24:9            E0245X          normal
         24:10           E00FLM          normal
         24:11           E01SC9          normal

This solution has no attachment