Open Stack

Hi all,

I am using devstack and sometimes when i do a ./unstack.sh and then
./stack.sh,
there is a Unable to locate Volume Group stack-volumes ERROR as followed.
Does anyone know what causes the error and  how to solve the issue? Before
i do the ./unstack.sh and redo ./stack.sh.  Everything looks good.

thanks
xin


2013-11-08 09:57:54.869 ERROR cinder.brick.local_dev.lvm
[req-3ccb7cde-b7bf-472a-afb6-c1e15b1cf589 None None] Unable to locate
Volume Group stack-volumes
2013-11-08 09:57:54.869 ERROR cinder.volume.manager
[req-3ccb7cde-b7bf-472a-afb6-c1e15b1cf589 None None] Error encountered
during initialization of driver: LVMISCSIDriver
2013-11-08 09:57:54.870 ERROR cinder.volume.manager
[req-3ccb7cde-b7bf-472a-afb6-c1e15b1cf589 None None] Bad or unexpected
response from the storage volume backend API: Volume Group stack-volumes
does not exist
2013-11-08 09:57:54.870 TRACE cinder.volume.manager Traceback (most recent
call last):
2013-11-08 09:57:54.870 TRACE cinder.volume.manager   File
"/opt/stack/cinder/cinder/volume/manager.py", line 191, in init_host
2013-11-08 09:57:54.870 TRACE cinder.volume.manager
self.driver.check_for_setup_error()
2013-11-08 09:57:54.870 TRACE cinder.volume.manager   File
"/opt/stack/cinder/cinder/volume/drivers/lvm.py", line 89, in
check_for_setup_error
2013-11-08 09:57:54.870 TRACE cinder.volume.manager     raise
exception.VolumeBackendAPIException(data=message)
2013-11-08 09:57:54.870 TRACE cinder.volume.manager
VolumeBackendAPIException: Bad or unexpected response from the storage
volume backend API: Volume Group stack-volumes does not exist
2013-11-08 09:57:54.870 TRACE cinder.volume.manager
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