Corrupt or Zero Byte MegaCli64 file Can Cause cellcli Output to Show Missing Disks on Exadata Platform
Last updated on APRIL 09, 2018
Applies to:
Exadata Database Machine X2-2 Hardware - Version All Versions to All Versions [Release All Releases]Exadata Database Machine X2-2 Qtr Rack - Version All Versions to All Versions [Release All Releases]
Exadata Database Machine X2-8 - Version All Versions to All Versions [Release All Releases]
Oracle Exadata Hardware - Version 11.2.0.1 to 11.2.3.1.1 [Release 11.2]
Exadata Database Machine X2-2 Full Rack - Version All Versions to All Versions [Release All Releases]
Information in this document applies to any platform.
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
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