Verification done on Zesty.

$ lsb_release -d
Description:    Ubuntu 17.04

$ wget 'https://launchpadlibrarian.net/337656213/file_146489.txt' -O 
io_setup_v2.c
$ sudo apt-get --yes install gcc libaio-dev
$ gcc -o io_setup_v2 io_setup_v2.c -laio

Previous kernel:
---------------

$ sudo apt-get --yes install linux-image-generic=4.10.0.37.37
$ sudo kexec --append="$(cat /proc/cmdline)" 
--initrd=/boot/initrd.img-4.10.0-37-generic /boot/vmlinux-4.10.0-37-generic 
...
$ uname -rv
4.10.0-37-generic #41-Ubuntu SMP Fri Oct 6 20:22:54 UTC 2017


$ ./io_setup_v2 1 65536
nr_events: 1, nr_requests: 65536
rc = -11, i = 204
^Z
[1]+  Stopped                 ./io_setup_v2 1 65536

$ cat /proc/sys/fs/aio-nr
130560
$ cat /proc/sys/fs/aio-max-nr
65536
$ kill %%


Current kernel:
--------------

$ sudo apt-get --yes install linux-image-generic=4.10.0.38.38
$ sudo kexec --append="$(cat /proc/cmdline)" 
--initrd=/boot/initrd.img-4.10.0-38-generic /boot/vmlinux-4.10.0-38-generic 
...
$ uname -rv
4.10.0-38-generic #42-Ubuntu SMP Tue Oct 10 13:22:54 UTC 2017
$ ./io_setup_v2 1 65536
nr_events: 1, nr_requests: 65536
rc = -12, i = 65514
^Z
[1]+  Stopped                 ./io_setup_v2 1 65536
$ cat /proc/sys/fs/aio-nr
65514
$ cat /proc/sys/fs/aio-max-nr
65536
$ kill %%

** Tags removed: verification-needed-zesty
** Tags added: verification-done-zesty

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https://bugs.launchpad.net/bugs/1718397

Title:
  multipath -ll is not showing the disks which are actually multipath

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