>From  Ryan Beisner (1chb1n)  :

Xenial-Mitaka

I've confirmed that hot-plugging a cinder volume to a uefi arm64 nova
instance doesn't work out of the box.

After attaching the volume, it was necessary to reboot the instance in
order to detect and use the new volume.

$ openstack volume create --size 60 volume1

$ openstack server add volume xenial-uefi-20170119b221218 volume1

+--------------------------------------+--------------+--------+------+------------------------------------------------------+
| ID | Display Name | Status | Size | Attached to |
+--------------------------------------+--------------+--------+------+------------------------------------------------------+
| 2631f6fe-ff0b-4357-9b65-1b449fc0905b | volume1 | in-use | 60 | Attached to 
xenial-uefi-20170119b221218 on /dev/vdc |
| cc15681a-4957-4653-b18b-63188430477d | volume0 | in-use | 10 | Attached to 
xenial-uefi-20170119b221218 on /dev/vdb |
+--------------------------------------+--------------+--------+------+------------------------------------------------------+

# Note the lack of the 60G storage
ubuntu@xenial-uefi-20170119b221218:~$ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
vda 253:0 0 10G 0 disk
vdb 253:16 0 20G 0 disk
├─vdb1 253:17 0 19.9G 0 part /
└─vdb15 253:31 0 99M 0 part /boot/efi

# After simply rebooting the nova instance, the 60G storage is attached
ubuntu@xenial-uefi-20170119b221218:~$ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
vda 253:0 0 10G 0 disk
vdb 253:16 0 20G 0 disk
├─vdb1 253:17 0 19.9G 0 part /
└─vdb15 253:31 0 99M 0 part /boot/efi
vdc 253:32 0 60G 0 disk

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https://bugs.launchpad.net/bugs/1664737

Title:
  [ARM]  : Unable to use Cinder volumes on ARM

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