Show DeviceMapper names for LVM Volumes (to disambiguate iostat logs, etc)

sudo lvdisplay |awk '/LV Name/{blockdev=$3} /Block device/{bdid=$3; sub("[0-9]*:","dm-",bdid); print bdid,blockdev;}'
Emits the device names which will be printed by iostat for an LVM volume; doesn't show the names for the underlying devices when snapshots are being used (the -cow and -real devices in /dev/mapper)
Sample Output
dm-0 /dev/storage/root
dm-1 /dev/storage/swap_1

1
2010-06-10 11:50:31

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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