Public bug reported:
Running Kilo Stable version of OpenStack
While testing on a small OpenStack configuration using LVM as a backend
I have configured the /etc/lvm/lvm.conf on my hosts to reject all
devices except those on which the operating system is installed.
On the host where cinder-volume & cinder-backup are running I created a
/etc/cinder/lvm.conf which rejects all devices except those backing the
cinder-volumes LVM VG. I.e. there is no overlap between the set of
devices accepted by /etc/lvm/lvm.conf and /etc/cinder/lvm.conf.
When I try to start cinder-volume I get errors trying to initalise the
LVM backend because the specified backing LVM VG is not found.
Looking in the logs I noticed that even though /etc/cinder/lvm.conf
exists and was specified via the lvm_conf_file option, there is a 'vgs'
command being run without LVM_SYSTEM_DIR specified in it's environment.
This lead me to the 'cinder/brick/local_dev/lvm.py' file where I noticed
that, in the middle of the LVM.__init__(), there is a self._vg_exists()
check, but the LVM.LVM_CMD_PREFIX isn't updated to include
LVM_SYSTEM_DIR until the end of the LVM.__init__() routine, as follows:
if lvm_conf and os.path.isfile(lvm_conf):
LVM.LVM_CMD_PREFIX = ['env',
'LC_ALL=C',
'LVM_SYSTEM_DIR=/etc/cinder']
Moving these 4 lines of code to before the create_vg check near the
beginning of LVM.__init__() resolved the problem and allows me to start
cinder-volume.
I notice that this code appears the same on the cinder/master branch, so
I will propose a review for this against that branch later today.
** Affects: cinder
Importance: Undecided
Assignee: Fergal Mc Carthy (fergal-mccarthy)
Status: New
** Project changed: nova => cinder
** Changed in: cinder
Assignee: (unassigned) => Fergal Mc Carthy (fergal-mccarthy)
--
You received this bug notification because you are a member of Yahoo!
Engineering Team, which is subscribed to OpenStack Compute (nova).
https://bugs.launchpad.net/bugs/1498480
Title:
LVM.__init__() checks for VG existence before setting up
LVM_SYSTEM_DIR
Status in Cinder:
New
Bug description:
Running Kilo Stable version of OpenStack
While testing on a small OpenStack configuration using LVM as a
backend I have configured the /etc/lvm/lvm.conf on my hosts to reject
all devices except those on which the operating system is installed.
On the host where cinder-volume & cinder-backup are running I created
a /etc/cinder/lvm.conf which rejects all devices except those backing
the cinder-volumes LVM VG. I.e. there is no overlap between the set of
devices accepted by /etc/lvm/lvm.conf and /etc/cinder/lvm.conf.
When I try to start cinder-volume I get errors trying to initalise the
LVM backend because the specified backing LVM VG is not found.
Looking in the logs I noticed that even though /etc/cinder/lvm.conf
exists and was specified via the lvm_conf_file option, there is a
'vgs' command being run without LVM_SYSTEM_DIR specified in it's
environment.
This lead me to the 'cinder/brick/local_dev/lvm.py' file where I
noticed that, in the middle of the LVM.__init__(), there is a
self._vg_exists() check, but the LVM.LVM_CMD_PREFIX isn't updated to
include LVM_SYSTEM_DIR until the end of the LVM.__init__() routine, as
follows:
if lvm_conf and os.path.isfile(lvm_conf):
LVM.LVM_CMD_PREFIX = ['env',
'LC_ALL=C',
'LVM_SYSTEM_DIR=/etc/cinder']
Moving these 4 lines of code to before the create_vg check near the
beginning of LVM.__init__() resolved the problem and allows me to
start cinder-volume.
I notice that this code appears the same on the cinder/master branch,
so I will propose a review for this against that branch later today.
To manage notifications about this bug go to:
https://bugs.launchpad.net/cinder/+bug/1498480/+subscriptions
--
Mailing list: https://launchpad.net/~yahoo-eng-team
Post to : yahoo-eng-team@lists.launchpad.net
Unsubscribe : https://launchpad.net/~yahoo-eng-team
More help : https://help.launchpad.net/ListHelp
