Red Hat

Oh, that's easy. dm-0 corresponds to the logical volume VolGroup00-LogVol00. Since you have only one disk, and only one VG, it's the internal disk.

Thanks pludi,

So you mean dm-0 and dm-1 here are my hdd?
Also, where can i see the details of storage disk's then? we have configured it on our system..

Regards!

Code:

cmdline #  lvdisplay|awk  '/LV Name/{n=$3} /Block device/{d=$3; sub(".*:","dm-",d); print d,n;}'

What they're keying off of is the minor number on the block device. A major number of 253 means it's a devicemapper device while the minor number is used in the dm-X naming scheme. Your "ls -l" shows the minor number of "0" (i.e "dm-0") is associated with VolGroup00-LogVol00. So the long and the short of it is that dm-0 is another name for the VolGroup00-LogVol00 logical volume.

Judging from your initial output it looks like sda is a local drive and I don't see anything to imply that VolGroup00 has anything but local volumes in it (you can check with "pvs" though. If sda is the only thing that shows up then you're good).

What specific details were you hoping to get at?