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[Openstack] [openstack][nova|cinder] niscsiadm: Could not log into all portals || VolumeNotFound exception

You launch a volume-backed instance. The volume can't be attached, so 
the instance can't be launched.

The volume can't be attached because iSCSI authentication fails. Either 
it's not set up correctly in cinder.conf on the controller, or you hit a 
bug. When you google for /iscsi authentication /and /Cinder /or /Nova/, 
you get plenty of hits, such as 

This is the command that fails on the controller. The IP address or 
target might be incorrect, or the credentials, which are set by earlier 
iscsiadm commands.
> iscsiadm -m node -T iqn.2010-10.org.openstack:volume-9ae59d83-ec09-4fd5-aa2c-5049a29bed5e -p --login
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