[Oracleasm-users] Disks visible in oracleasm listdisks, but not v$asm_disk

[Jani Patokallio]

Greetings,

I'm attempting to install Oracle CRS/ASM on a RHEL 4u4 system, and have
found myself in precisely the same unfortunate predicament as this
gentleman:

  http://forums.oracle.com/forums/thread.jspa?threadID=450530&tstart=270

In other words, /etc/init.d/oracleasm and /dev/oracleasm/disks look
absolutely fine, but the Oracle ASM instance can't find them at all.  Any
ideas?  Prior to this, I had some unpleasantness attempting to install CRS
(turns out it doesn't like hostnames with capital letters), so there's a
distinct possibility there's some mess left over from there -- but I'm a
little baffled as to why it should matter to ASM.

Any tips would be much appreciated, otherwise it's back to square one and
reinstalling the OS from scratch...

* * *

[oracle at cndambsmdbop17 ASM]$ uname -a
Linux cndambsmdbop17 2.6.9-42.ELsmp #1 SMP Wed Jul 12 23:32:02 EDT 2006
x86_64 x86_64 x86_64 GNU/Linux
[oracle at cndambsmdbop17 ASM]$ rpm -qa | grep oracleasm
oracleasm-2.6.9-42.ELsmp-2.0.3-1
oracleasmlib-2.0.2-1
oracleasm-support-2.0.3-1
[oracle at cndambsmdbop17 ASM]$ /etc/init.d/oracleasm listdisks
DISK1
DISK10
DISK11
DISK12
DISK13
DISK14
DISK15
DISK2
DISK3
DISK4
DISK5
DISK6
DISK7
DISK8
DISK9
[oracle at cndambsmdbop17 ASM]$ ls -l /dev/oracleasm/disks/
total 0
brw-rw----  1 oracle dba  8,  49 Mar  7 09:59 DISK1
brw-rw----  1 oracle dba  8, 193 Mar  7 09:59 DISK10
brw-rw----  1 oracle dba  8, 209 Mar  7 09:59 DISK11
brw-rw----  1 oracle dba  8, 225 Mar  7 09:59 DISK12
brw-rw----  1 oracle dba  8, 241 Mar  7 09:59 DISK13
brw-rw----  1 oracle dba 65,   1 Mar  7 09:59 DISK14
brw-rw----  1 oracle dba 65,  17 Mar  7 09:59 DISK15
brw-rw----  1 oracle dba  8,  65 Mar  7 09:59 DISK2
brw-rw----  1 oracle dba  8,  81 Mar  7 09:59 DISK3
brw-rw----  1 oracle dba  8,  97 Mar  7 09:59 DISK4
brw-rw----  1 oracle dba  8, 113 Mar  7 09:59 DISK5
brw-rw----  1 oracle dba  8, 129 Mar  7 09:59 DISK6
brw-rw----  1 oracle dba  8, 145 Mar  7 09:59 DISK7
brw-rw----  1 oracle dba  8, 161 Mar  7 09:59 DISK8
brw-rw----  1 oracle dba  8, 177 Mar  7 09:59 DISK9
[oracle at cndambsmdbop17 ASM]$ sqlplus '/ as sysdba'

SQL*Plus: Release 10.2.0.1.0 - Production on Wed Mar 7 13:12:54 2007

Copyright (c) 1982, 2005, Oracle.  All rights reserved.


Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - 64bit Production
With the Partitioning, Real Application Clusters, OLAP and Data Mining
options

SQL> show parameter asm_diskstring;

NAME                                 TYPE        VALUE
------------------------------------ -----------
------------------------------
asm_diskstring                       string      /dev/oracleasm/disks/*
SQL> select path from v$asm_disk;

PATH
--------------------------------------------------------------------------------
/dev/oracleasm/disks/DISK1
/dev/oracleasm/disks/DISK15
/dev/oracleasm/disks/DISK3
/dev/oracleasm/disks/DISK4
/dev/oracleasm/disks/DISK5
/dev/oracleasm/disks/DISK6
/dev/oracleasm/disks/DISK7
/dev/oracleasm/disks/DISK8
/dev/oracleasm/disks/DISK9
/dev/oracleasm/disks/DISK10
/dev/oracleasm/disks/DISK11

PATH
--------------------------------------------------------------------------------
/dev/oracleasm/disks/DISK12
/dev/oracleasm/disks/DISK13
/dev/oracleasm/disks/DISK14
/dev/oracleasm/disks/DISK2

15 rows selected.

SQL> alter system set asm_diskstring='ORCL:*';

System altered.

SQL> select path from v$asm_disk;

no rows selected

SQL>

Cheers,
-jani