Comment 6 for bug 1642111

I see this in the syslog at the point of failure:

http://logs.openstack.org/69/396469/7/check/gate-tempest-dsvm-cells-ubuntu-xenial/29e8b58/logs/syslog.txt.gz#_Nov_15_22_06_36

Nov 15 22:06:36 ubuntu-xenial-osic-cloud1-s3700-5383810 kernel: device-mapper: table: 252:4: thin: Unable to activate thin device while pool is suspended
Nov 15 22:06:36 ubuntu-xenial-osic-cloud1-s3700-5383810 kernel: device-mapper: ioctl: error adding target to table