Comment 0 for bug 1432490

When running Datera storage with Cinder and the following TestEncryptedCinderVolumes tests:

{0} tempest.scenario.test_encrypted_cinder_volumes.TestEncryptedCinderVolumes.test_encrypted_cinder_volumes_cryptsetup
{0} tempest.scenario.test_encrypted_cinder_volumes.TestEncryptedCinderVolumes.test_encrypted_cinder_volumes_luks

cryptsetup complains about the name being too long:

http://paste.openstack.org/show/192537

Nova uses the device name that's in /dev/disk-by-path, which in this case is the returned iqn from the backend:

ip-172.30.128.2:3260-iscsi-iqn.2013-05.com.daterainc:OpenStack-TestEncryptedCinderVolumes-676292884:01:sn:aef6a6f1cd84768f-lun-0

Already started talking Matt Treinish about this on IRC last week. Unsure where the fix should actual go into. While I understand this is not reproducible with the reference implementation LVM, this seems like a unknown limitation today since we're not enforcing any length on the IQN or recommending anything.