Comment 0 for bug 1628336

This fails on 4.8.0-17-generic and passes on

$ sudo apt-get update
$ sudo apt-get install -qy cloud-image-utils
$ wget http://cloud-images.ubuntu.com/xenial/current/xenial-server-cloudimg-amd64-disk1.img
$ cp xenial-server-cloudimg-amd64-disk1.img disk.img
$ sudo mount-image-callback xenial-server-cloudimg-amd64-disk1.img -v ls _MOUNTPOINT_
replaced string _MOUNTPOINT_ in arguments arg 1
waiting on pidfile for /dev/nbd0 in /sys/block/nbd0/pid
connected xenial-server-cloudimg-amd64-disk1.img (qcow2) to /dev/nbd0. waiting for device.
partitioned disk.
waiting for /dev/nbd0p1 part=1 to be ready.
waiting for /dev/nbd0p1 part=1 to be ready.
waiting for /dev/nbd0p1 part=1 to be ready.
waiting for /dev/nbd0p1 part=1 to be ready.
waiting for /dev/nbd0p1 part=1 to be ready.
waiting for /dev/nbd0p1 part=1 to be ready.
waiting for /dev/nbd0p1 part=1 to be ready.
waiting for /dev/nbd0p1 part=1 to be ready.
waiting for /dev/nbd0p1 part=1 to be ready.
gave up on waiting for /dev/nbd0p1
$ echo $?
1

On an identical system other than 'apt-get install linux-virtual' to get the new kernel, you see:

$ uname -r
4.4.0-9136-generic

$ sudo mount-image-callback disk.img -v ls _MOUNTPOINT_
replaced string _MOUNTPOINT_ in arguments arg 1
waiting on pidfile for /dev/nbd0 in /sys/block/nbd0/pid
connected disk.img (qcow2) to /dev/nbd0. waiting for device.
partitioned disk.
mounted /dev/nbd0p1 via qemu-nbd /dev/nbd0
invoking: MOUNTPOINT=/tmp/mount-image-callback.Y8D4lk/mp ls /tmp/mount-image-callback.Y8D4lk/mp
bin etc lib media proc sbin sys var
boot home lib64 mnt root snap tmp vmlinuz
dev initrd.img lost+found opt run srv usr
cmd returned 0. unmounting /tmp/mount-image-callback.Y8D4lk/mp

ProblemType: Bug
DistroRelease: Ubuntu 16.10
Package: linux-image-4.8.0-17-generic 4.8.0-17.19
ProcVersionSignature: User Name 4.8.0-17.19-generic 4.8.0-rc7
Uname: Linux 4.8.0-17-generic x86_64
AlsaDevices:
 total 0
 crw-rw---- 1 root audio 116, 1 Sep 27 19:04 seq
 crw-rw---- 1 root audio 116, 33 Sep 27 19:04 timer
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
ApportVersion: 2.20.3-0ubuntu7
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
CRDA: N/A
Date: Wed Sep 28 00:58:49 2016
Ec2AMI: ami-00000438
Ec2AMIManifest: FIXME
Ec2AvailabilityZone: nova
Ec2InstanceType: m1.small
Ec2Kernel: unavailable
Ec2Ramdisk: unavailable
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
Lsusb: Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: OpenStack Foundation OpenStack Nova
PciMultimedia:

ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcFB:

ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.8.0-17-generic root=UUID=072136f3-5666-4381-83bd-8d7175059be3 ro console=tty1 console=ttyS0
RelatedPackageVersions:
 linux-restricted-modules-4.8.0-17-generic N/A
 linux-backports-modules-4.8.0-17-generic N/A
 linux-firmware N/A
RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/01/2014
dmi.bios.vendor: SeaBIOS
dmi.bios.version: Ubuntu-1.8.2-1ubuntu1~cloud0
dmi.chassis.type: 1
dmi.chassis.vendor: QEMU
dmi.chassis.version: pc-i440fx-vivid
dmi.modalias: dmi:bvnSeaBIOS:bvrUbuntu-1.8.2-1ubuntu1~cloud0:bd04/01/2014:svnOpenStackFoundation:pnOpenStackNova:pvr12.0.3:cvnQEMU:ct1:cvrpc-i440fx-vivid:
dmi.product.name: OpenStack Nova
dmi.product.version: 12.0.3
dmi.sys.vendor: OpenStack Foundation