2017-04-12 02:27:54.469 | +lib/lvm:init_lvm_volume_group:123         _create_lvm_volume_group stack-volumes-default 10250M
2017-04-12 02:27:54.474 | +lib/lvm:_create_lvm_volume_group:88       local vg=stack-volumes-default
2017-04-12 02:27:54.478 | +lib/lvm:_create_lvm_volume_group:89       local size=10250M
2017-04-12 02:27:54.482 | +lib/lvm:_create_lvm_volume_group:91       local backing_file=/opt/stack/data/stack-volumes-default-backing-file
2017-04-12 02:27:54.487 | +lib/lvm:_create_lvm_volume_group:92       sudo vgs stack-volumes-default
2017-04-12 02:27:54.498 |   Volume group "stack-volumes-default" not found
2017-04-12 02:27:54.498 |   Cannot process volume group stack-volumes-default
2017-04-12 02:27:54.506 | +lib/lvm:_create_lvm_volume_group:94       [[ -f /opt/stack/data/stack-volumes-default-backing-file ]]
2017-04-12 02:27:54.515 | +lib/lvm:_create_lvm_volume_group:95       local vg_dev
2017-04-12 02:27:54.523 | ++lib/lvm:_create_lvm_volume_group:96       sudo losetup -f --show /opt/stack/data/stack-volumes-default-backing-file
2017-04-12 02:27:54.570 | +lib/lvm:_create_lvm_volume_group:96       vg_dev=/dev/loop0
2017-04-12 02:27:54.575 | +lib/lvm:_create_lvm_volume_group:99       sudo vgs stack-volumes-default
2017-04-12 02:27:54.592 |   Volume group "stack-volumes-default" not found
2017-04-12 02:27:54.592 |   Cannot process volume group stack-volumes-default
2017-04-12 02:27:54.604 | +lib/lvm:_create_lvm_volume_group:100      sudo vgcreate stack-volumes-default /dev/loop0
2017-04-12 02:27:54.675 |   A volume group called stack-volumes-default already exists.
2017-04-12 02:27:54.685 | +lib/lvm:_create_lvm_volume_group:1        exit_trap
2017-04-12 02:27:54.695 | +./stack.sh:exit_trap:487                  local r=5
2017-04-12 02:27:54.715 | ++./stack.sh:exit_trap:488                  jobs -p
2017-04-12 02:27:54.727 | +./stack.sh:exit_trap:488                  jobs=
2017-04-12 02:27:54.741 | +./stack.sh:exit_trap:491                  [[ -n ‘‘ ]]
2017-04-12 02:27:54.748 | +./stack.sh:exit_trap:497                  kill_spinner
2017-04-12 02:27:54.777 | +./stack.sh:kill_spinner:383               ‘[‘ ‘!‘ -z ‘‘ ‘]‘
2017-04-12 02:27:54.784 | +./stack.sh:exit_trap:499                  [[ 5 -ne 0 ]]
2017-04-12 02:27:54.803 | +./stack.sh:exit_trap:500                  echo ‘Error on exit‘
2017-04-12 02:27:54.803 | Error on exit
2017-04-12 02:27:54.812 | +./stack.sh:exit_trap:501                  generate-subunit 1491963385 689 fail
2017-04-12 02:27:55.237 | +./stack.sh:exit_trap:502                  [[ -z /opt/stack/logs ]]
2017-04-12 02:27:55.244 | +./stack.sh:exit_trap:505                  /opt/stack/devstack/tools/worlddump.py -d /opt/stack/logs
2017-04-12 02:27:55.934 | +./stack.sh:exit_trap:511                  exit 5

error