How does one view the dm-{n} names wrt the actual dev names? I assume it involves dmsetup but I cant figure it out. I am using iostat to track some busy disk io and don't know which dm-{n} to watch :)
Thanks! jlc
On Mon, 9 Jun 2008, Joseph L. Casale wrote:
How does one view the dm-{n} names wrt the actual dev names? I assume it involves dmsetup but I cant figure it out. I am using iostat to track some busy disk io and don't know which dm-{n} to watch :)
Thanks! jlc
try multipath -ll
------------------------------------------------------------------------ Jim Wildman, CISSP, RHCE jim@rossberry.com http://www.rossberry.com "Society in every state is a blessing, but Government, even in its best state, is a necessary evil; in its worst state, an intolerable one." Thomas Paine
On Mon, Jun 9, 2008 at 8:31 PM, Joseph L. Casale JCasale@activenetwerx.com wrote:
How does one view the dm-{n} names wrt the actual dev names? I assume it involves dmsetup but I cant figure it out. I am using iostat to track some busy disk io and don't know which dm-{n} to watch :)
Try ls -l /dev/mapper/
The minor number will correspond to the {n} in dm-{n}.
For instance, this:
$ ls -l /dev/mapper/ brw-rw---- 1 root disk 253, 1 Apr 30 15:32 sysvg-home
indicates that dm-1 is /dev/sysvg/home
HTH, Filipe
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Filipe Brandenburger -
Jim Wildman -
Joseph L. Casale