f12 /dev/dm-0 instead of /dev/VolGroup00/LogVol00?

[flux]

Hi everyone.

After installing f12 I noticed that mount command now shows /dev/dm-0 as my root partition instead of /dev/VolGroup00/LogVol00 as it used to be before.

# mount
/dev/dm-0 on / type ext4 (rw)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
tmpfs on /dev/shm type tmpfs (rw)
/dev/sda2 on /boot type ext3 (rw)
...

my fstab looks like:
UUID=9abd18d4-a07b-4025-9278-944f400ba535 / ext4 defaults 1 1
UUID=070586f8-3ddf-4684-9954-e2945ff37352 /boot ext3 defaults 1 2
tmpfs /dev/shm tmpfs defaults 0 0
devpts /dev/pts devpts gid=5,mode=620 0 0
#devpts options modified by setup update to fix #515521 ugly way
sysfs /sys sysfs defaults 0 0
proc /proc proc defaults 0 0
/dev/mapper/VolGroup00-LogVol01 swap swap defaults 0 0

It seems like dracut initialize this device...
# dmesg | grep dra
dracut: dracut-002-13.4.git8f397a9b.fc12
dracut: Starting plymouth daemon
dracut: Scanning devices sda1 sda3 for LVM volume groups
dracut: Reading all physical volumes. This may take a while...
dracut: Found volume group "VolGroup00" using metadata type lvm2
dracut: 2 logical volume(s) in volume group "VolGroup00" now active
dracut: Mounted root filesystem /dev/dm-0
dracut: Switching root

1. What is the device dm-0?
2. Is it possible to revert back to lvm naming scheme because some gui programs don't show that i have / partition at all.))))