MULTIPATH FAILURE ON ODA

Asset ID:	1-72-1478033.1
Update Date:	2012-07-31
Keywords:

Solution Type Problem Resolution Sure

Solution 1478033.1 : MULTIPATH FAILURE ON ODA

Applies to:

Oracle Database Appliance - Version Not Applicable to Not Applicable [Release N/A]
Information in this document applies to any platform.

Symptoms

Hard Disk goes into offline status for few minutes comes back to online state. Upon reboot, one of the nodes of the ODA could not start, while the second node starts and contineous to work. Further, the disk status is displayed as both ok and failure in the system.

Cause

Messages file shows


Jul 5 11:46:36 acehqoc0011 kernel: sd 7:0:14:0: [sdan] Unhandled sense code 
Jul 5 11:46:36 acehqoc0011 kernel: sd 7:0:14:0: [sdan] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE 
Jul 5 11:46:36 acehqoc0011 kernel: sd 7:0:14:0: [sdan] Sense Key : Medium Error [current] 
Jul 5 11:46:36 acehqoc0011 kernel: Info fld=0x3c07f5f0 
Jul 5 11:46:36 acehqoc0011 kernel: sd 7:0:14:0: [sdan] Add. Sense: Unrecovered read error 
Jul 5 11:46:36 acehqoc0011 kernel: sd 7:0:14:0: [sdan] CDB: Read(10): 28 00 3c 07 f4 01 00 04 00 00 Jul 5 11:46:36 acehqoc0011 kernel: end_request: I/O error, dev sdan, sector 1007154672
Jul 5 11:46:41 acehqoc0011 multipathd: HDD_E0_S04_1137778563: sdan - directio checker reports path is up Jul 5 11:46:41 acehqoc0011 multipathd: 66:112: reinstated

Disk status in oakcli shows good

oakcli show-disk shows

pd_04 /dev/sdan HDD ONLINE Good

oakcli lsscsi shows

[6:0:1:0]    disk    SEAGATE  ST360057SSUN600G 0A25  /dev/sdd [7:0:14:0]   disk    SEAGATE  ST360057SSUN600G 0A25  /dev/sdan

oakcli show-disk_detail shows


Disk: pd_04 ActionTimeout   : 600            
ActivePath      : /dev/sdan      
AsmDiskList     : |data_04||reco_04| 
AutoDiscovery   : 1              
AutoDiscoveryHi : |data:86:HDD||reco:14:HDD||redo:100 
CheckInterval   : 100            ColNum          : 0              
DiskId          : 35000c50043d11f83 
DiskType        : HDD            
Enabled         : 0              
ExpNum          : 0              
IState          : 0              
Initialized     : 0              
MonitorFlag     : 0              
MultiPathList   : |/dev/sdan||/dev/sdd| 
Name            : pd_04          
NewPartAddr     : 0              
PrevState       : 5              
PrevUsrDevName  :              
SectorSize      : 512            
SerialNum       : 001144E2GALD  
Size            : 600127266304  
SlotNum         : 4              
State           : Online        
StateChangeTs   : 1341929068    
StateDetails    : Good          
TotalSectors    : 1172123567    
TypeName        : 0              
UsrDevName      : HDD_E0_S04_1137778563 
gid             : 0              
mode            : 660            
uid             : 0

Solution

This is caused due to

Bug 14049272: LNX64-112-CMT: MASSIVE MULTIPATH FAILURE ON ODA

This BUG has been fixed in ODA 2.3.0.0.0.

Upgrade to ODA 2.3.0.0.0.

References

<NOTE:166650.1> - Working Effectively With Global Customer Support
<NOTE:1390058.1> - Oracle Database Appliance Diagnostic Information required for Disk Failures
<NOTE:888888.1> - Oracle Database Appliance - 2.X Supported Versions & Known Issues
<BUG:14049272> - LNX64-112-CMT: MASSIVE MULTIPATH FAILURE ON ODA

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