Comment 3 for bug 1698337

2017-06-16 08:41:51.441 | 2017-06-16 08:41:51.441 INFO diskimage_builder.block_device.utils [-] Calling [sudo kpartx -avs /dev/loop0]
2017-06-16 08:41:51.450 | 2017-06-16 08:41:51.450 DEBUG diskimage_builder.block_device.level2.mkfs [-] Creating fs command [['mkfs', '-t', 'ext4', '-i', '4096', '-J', 'size=64', '-L', 'cloudimg-rootfs', '-U', 'c5ba0122-3b42-463c-8b9e-03a00992ec4d', '-q', '/dev/mapper/loop0p1']] create /opt/stack/new/diskimage-builder/diskimage_builder/block_device/level2/mkfs.py:130
2017-06-16 08:41:51.450 | 2017-06-16 08:41:51.450 INFO diskimage_builder.block_device.utils [-] Calling [sudo mkfs -t ext4 -i 4096 -J size=64 -L cloudimg-rootfs -U c5ba0122-3b42-463c-8b9e-03a00992ec4d -q /dev/mapper/loop0p1]
2017-06-16 08:41:51.459 | 2017-06-16 08:41:51.459 DEBUG diskimage_builder.block_device.utils [-] exec_sudo: b'The file /dev/mapper/loop0p1 does not exist and no size was specified.' exec_sudo /opt/stack/new/diskimage-builder/diskimage_builder/block_device/utils.py:120