How to find device information of ASM Disks.

1. Find out the asm Disk list using oralceasm listdisks command.
2. Find the device mapping information using oracleasm  querydisk command.
3. Find out the device using ls -l command.

[root@sbdbdr01 ~]# oracleasm listdisks
DB_ORCL_DATA_ASM_01
DB_ORCL_DATA_ASM_02
DB_ORCL_DATA_ASM_03
DB_ORCL_DATA_ASM_04
DB_ORCL_DATA_ASM_05
DB_ORCL_FRA_ASM_01
DB_ORCL_FRA_ASM_02
DB_ORCL_FRA_ASM_03
DB_ORCL_FRA_ASM_04
DB_ORCL_FRA_ASM_05
DB_ORCL_FRA_ASM_06
[root@sbdbdr01 ~]#
[root@sbdbdr01 ~]# oracleasm querydisk -d DB_ORCL_DATA_ASM_05
Disk "DB_ORCL_DATA_ASM_05" is a valid ASM disk on device [8, 97]
[root@sbdbdr01 ~]#
[root@sbdbdr01 ~]#
[root@sbdbdr01 ~]# ls -l /dev/* | grep 8, | grep 97
brw-rw----  1 root disk      8,  97 Oct 23 13:49 /dev/sdg1
[root@sbdbdr01 ~]#