If I trying to do following on KVM host:
# kpartx -av /dev/VolGroup00/kvm101_img
add map kvm101_img1 : 0 208782 linear /dev/VolGroup00/kvm101_img 63
add map kvm101_img2 : 0 125612235 linear /dev/VolGroup00/kvm101_img 208845
# mount /dev/mapper/kvm101_img1 /mnt
then I'm getting /boot partition mounted.
But I'm getting an error if I then type following:
# mount /dev/mapper/kvm101_img2 /mnt
mount: you must specify the filesystem type
Here is a fdisk layout on guest machine:
# fdisk -l
Device Boot Start End Blocks Id System
/dev/hda1 * 1 13 104391 83 Linux
/dev/hda2 14 7832 62806117+ 8e Linux LVM
Is it possible to find a root partition on guest and mount it on host system?
Best Answer
Seems that I finally figured out how to do things I needed. Here is what I did:
if VolGroup names identical in guest and host systems, then you have to rename guest VolGroup
uuid of VolGroups you can check in
vgdisplay
. So, the trick is in activating guest VolGroup:After that it's easily mounted:
Finally, the backward process is:
The last command cleans the LVM cache and removes the physical volume created by kpartx from LVM.