Opening qcow files

Qcow files are used as disks in KVM

losetup -f

Get a free loop-back device, say /dev/loop0.

losetup /dev/loop0 harshal.qcow
kaprtx -av /dev/loop0
vgscan

Get the name of the volume group in qcow file, say vg_harshal.

vgchange -ay vg_harshal

Enable that volumegroup.

lvdisplay

Get logical volume name for that volume group, say /dev/vg_harshal/root1

mount /dev/vg_harshal/root1 /mount_point

Good to Use.

Once done, we need to undo the changes.


umount /mount_point
vgchange -an vg_harshal
kpartx -dv /dev/loop0
losetup -d /dev/loop0