How to identify which rawdevice Disk Is named as VOL1 IN ASM from os level
Hi Friends,
disk creation using the ASMLIB
I want to know which disk is named as VOL1,VOL2,VOL3 etc,. from operating system LINUX .
i know using v$asm_disk we can query name,path, status, label, etc...
i want to know which raw device disk is named or configured as VOL1 from operating system(LINUX )
thanks in advance.
rajesh.
Edited by: rajeysh on Jun 3, 2010 3:49 PM
Well for this you can use oracleasm querydisk.Using this you can identify which device as marked for asm or not. for example you can see this below example.
[oracle@localhost init.d]$ sqlplus "/as sysdba"
SQL*Plus: Release 10.2.0.4.0 - Production on Thu Jun 3 11:52:12 2010
Copyright (c) 1982, 2007, Oracle. All Rights Reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> select path from v$asm_disk;
PATH
/dev/oracleasm/disks/VOL2
/dev/oracleasm/disks/VOL1
SQL> exit;
[oracle@localhost init.d]$ su
Password:
[root@localhost init.d]# /sbin/fdisk -l
Disk /dev/sda: 80.0 GB, 80000000000 bytes
255 heads, 63 sectors/track, 9726 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sda1 * 1 1305 10482381 83 Linux
/dev/sda2 1306 9401 65031120 83 Linux
/dev/sda3 9402 9662 2096482+ 82 Linux swap / Solaris
/dev/sda4 9663 9726 514080 5 Extended
/dev/sda5 9663 9726 514048+ 83 Linux
Disk /dev/sdb: 80.0 GB, 80026361856 bytes
255 heads, 63 sectors/track, 9729 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdb1 1 4859 39029886 83 Linux
/dev/sdb2 4860 9729 39118275 83 Linux
[root@localhost init.d]# ./oracleasm querydisk /dev/sdb1
Device "/dev/sdb1" is marked an ASM disk with the label "VOL1"
[root@localhost init.d]# ./oracleasm querydisk /dev/sdb2
Device "/dev/sdb2" is marked an ASM disk with the label "VOL2"
[root@localhost init.d]# ./oracleasm querydisk /dev/sda1
Device "/dev/sda1" is not marked as an ASM disk
[root@localhost init.d]# Also in windows :
C:\Documents and Settings\comp>asmtool -list
NTFS \Device\Harddisk0\Partition1 140655M
ORCLDISKDATA1 \Device\Harddisk0\Partition2 4102M
ORCLDISKDATA2 \Device\Harddisk0\Partition3 4102M
NTFS \Device\Harddisk0\Partition4 152617M
C:\Documents and Settings\comp> this is answer your question. :-)
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