Re: Linux devices for ASM

  • From: Dan Norris <dannorris@xxxxxxxxxxxxx>
  • To: mzito@xxxxxxxxxxx
  • Date: Mon, 09 Jun 2008 20:40:03 -0600

On RHEL 4, you likely are using the multipath package, so you can find device-to-WWID mappings in /var/lib/multipath/bindings and "multipath -l" may help identify disks. If you're using iSCSI, then "iscsi-ls -l" may also help along with the other commands cited here.

I'm also a big fan of the "old school" viewing of disk information via /proc/partitions which gives device names and maj/min numbers as cached by the kernel. I know of no more direct way to see what the kernel thinks the disks are at any given point.

Dan

Matthew Zito wrote:

You can look in /dev/oracleasm/disks at the Major and Minor numbers, and then map that back to the major and minor numbers of the mpath devices (assuming you are using asmlib).

 

Matt

 

From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Allan Nelson
Sent: Monday, June 09, 2008 10:16 AM
To: Oracle-L Freelists
Subject: Linux devices for ASM

 

We had consultant come in and build a 3 node rac for us.  I need to know how to find out which /dev/mapper/mpath devices are used in the asm diskgroup.
Oracle 10gR2 10.2.0.4
RHEL 4.6

Thanks
Allan

-- //www.freelists.org/webpage/oracle-l

Other related posts:

  1. Home
  2. oracle-l
  3. Archive
  4. 06-2008