Checking the device ASM picked up when multi-pathed.

Hi,
I may have missed this in the documentation but I'd can't find out how to comfirm that ASMlib has picked up the multi-path device rather than one of the real paths where storage is multi-pathed.
Is there a way to confirm the device found by ASMlib?
The environment is 11g on Linux using ASMlib.
The search string should get ASM to find the mulit-path device first but I would like to ocnfirm what has actually happened.
Many thanks in advance.

Hi,
I've been scanning metalink again for inspiration on this and found the document "FAQ ASMLIB CONFIGURE,VERIFY, TROUBLESHOOT" (Doc ID: 359266.1).
I don’t know why I didn’t find it earlier but that’s life.
By the way that is a useful doc to read.
This solution answers my question of “How do I know what device ASMlib has actually found and that it is using the multipath device?”.
First find the major,minor numbers for the device ASMlib is using.
# /etc/init.d/oracleasm querydisk -d VOL4
Disk "VOL4" is a valid ASM disk on device [251, 97]
Next check the major,minor numbers against the device in /dev.
# ls -l /dev/* | grep 251 | grep 97
brw-r----- 1 root disk 251, 97 Jun 11 19:12 /dev/sddlmag1
Simple, I just hadn’t got it until now.
Thanks for the suggestions posted.
Edited by: user10515008 on 12-Jun-2009 04:08
Removed the bolding on the examples as it confused the actual display.

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