$ fdisk -l ia32e_rhel7u2_kvm.img

Disk rhel7u2_kvm.img: 21.5 GB, 21474836480 bytes, 41943040 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x000e5f14

Device Boot                Start         End      Blocks   Id  System
rhel7u2_kvm.img1   *        2048     1026047      512000   83  Linux
rhel7u2_kvm.img2         1026048    41943039    20458496   8e  Linux LVM

offset = Start(2048/1026048) * SectorSize(512) = 1048576

mkdir -p /test
mount -o offset=1048576 ia32e_rhel7u2_kvm.img /test

umount /mnt