Last updated on MARCH 14, 2012
Applies to:
Oracle Server - Enterprise Edition - Version: 10.2.0.1 to 11.2.0.3 - Release: 10.2 to 11.2Information in this document applies to any platform.
Symptoms
1) ASM configurations on Linux using ASMLIB API.2) kfod is reporting <unknown> state for the "User" & "Group" columns:
[oracle@saker ~]$ kfod asm_diskstring='ORCL:*' disk=all
--------------------------------------------------------------------------------
Disk Size Path User Group
================================================================================
1: 102398 Mb ORCL:IBMBLOB3 <unknown> <unknown>
2: 5115 Mb ORCL:IBMGRID1 <unknown> <unknown>
3: 102398 Mb ORCL:IBMTEST1 <unknown> <unknown>
4: 102398 Mb ORCL:IDX1 <unknown> <unknown>
5: 102398 Mb ORCL:SANDATA1 <unknown> <unknown>
6: 102398 Mb ORCL:SANDATA2 <unknown> <unknown>
7: 102398 Mb ORCL:SANDATA3 <unknown> <unknown>
8: 20489 Mb ORCL:SANLOG1 <unknown> <unknown>
9: 102398 Mb ORCL:SANLOG2 <unknown> <unknown>
10: 102398 Mb ORCL:SANLOG3 <unknown> <unknown>
11: 51209 Mb ORCL:SANREDO1 <unknown> <unknown>
--------------------------------------------------------------------------------
ORACLE_SID ORACLE_HOME
================================================================================
+ASM /apps/oracle/product/11.2.0.3/grid
3) But ASMLIB API is correctly enabled and perfectly used by ASM, therefore ASM is using the ASMLIB layer (ASMLIB I/O calls) to access the physical disks as confirmed by the next queries:
SQL> select library from v$asm_disk;
LIBRARY
----------------------------------------------------------------
ASM Library - Generic Linux, version 2.0.4 (KABI_V2)
ASM Library - Generic Linux, version 2.0.4 (KABI_V2)
ASM Library - Generic Linux, version 2.0.4 (KABI_V2)
ASM Library - Generic Linux, version 2.0.4 (KABI_V2)
ASM Library - Generic Linux, version 2.0.4 (KABI_V2)
ASM Library - Generic Linux, version 2.0.4 (KABI_V2)
ASM Library - Generic Linux, version 2.0.4 (KABI_V2)
ASM Library - Generic Linux, version 2.0.4 (KABI_V2)
ASM Library - Generic Linux, version 2.0.4 (KABI_V2)
ASM Library - Generic Linux, version 2.0.4 (KABI_V2)
ASM Library - Generic Linux, version 2.0.4 (KABI_V2)
11 rows selected.
SQL> show parameter asm
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
asm_diskgroups string DATAGROUP, LOGGROUP, BLOBGROUP
, REDOGROUP, LOGGROUP2, IDXGRO
UP, ENBROOK, GRID1
asm_diskstring string ORCL:*
asm_power_limit integer 2
asm_preferred_read_failure_groups string
SQL> exit
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Automatic Storage Management option
[oracle@saker ~]$ sqlplus / as sysdba
SQL*Plus: Release 11.2.0.3.0 Production on Wed Mar 14 21:21:46 2012
Copyright (c) 1982, 2011, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Automatic Storage Management option
SQL> select path from v$asm_disk;
PATH
--------------------------------------------------------------------------------
ORCL:IBMBLOB3
ORCL:IBMGRID1
ORCL:IBMTEST1
ORCL:IDX1
ORCL:SANDATA1
ORCL:SANDATA2
ORCL:SANDATA3
ORCL:SANLOG1
ORCL:SANLOG2
ORCL:SANLOG3
ORCL:SANREDO1
11 rows selected.
SQL> exit
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Automatic Storage Management option
Cause
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