[Openstack] Got semaphore "storage-registry-lock" and XXX in nova-compute

Francisco J. Araya faraya at kionetworks.com
Thu Dec 4 18:39:27 UTC 2014

Well, after working with Guillermo we have acknowleged is that it seems to
be an issue with the shared storage (CephFS).

We changed /var/lib/nova/instances to local storage on one of the computer
nodes and voila! The node it's not going down with XXX anymore!

Now we want to check if it's a file permissions issue on
/var/lib/nova/instances or there is a issue with shared fs ceph storage.

2014-12-04 1:15 GMT-06:00 Guillermo Alvarado <guillermoalvarado89 at gmail.com>

> Hi everyone,
> I can not found any info about this error: *Got semaphore
> "storage-registry-lock"*
> All my computes goes :-) but after 40 mins aprox I got XXX
> Here the complete log:
> 2014-12-04 00:43:41.921 32947 DEBUG nova.openstack.common.lockutils [-]
> Got semaphore "storage-registry-lock" lock
> /usr/lib/python2.7/dist-packages/nova/openstack/common/lockutils.py:168
> 2014-12-04 00:43:41.922 32947 DEBUG nova.openstack.common.lockutils [-]
> Attempting to grab file lock "storage-registry-lock" lock
> /usr/lib/python2.7/dist-packages/nova/openstack/common/lockutils.py:178
> 2014-12-04 00:43:41.963 32947 DEBUG nova.openstack.common.lockutils [-]
> Got file lock "storage-registry-lock" at
> /var/lib/nova/instances/locks/nova-storage-registry-lock lock
> /usr/lib/python2.7/dist-packages/nova/openstack/common/lockutils.py:206
> 2014-12-04 00:43:41.964 32947 DEBUG nova.openstack.common.lockutils [-]
> Got semaphore / lock "do_get_storage_users" inner
> /usr/lib/python2.7/dist-packages/nova/openstack/common/lockutils.py:248
> 2014-12-04 00:43:41.965 32947 DEBUG nova.openstack.common.lockutils [-]
> Released file lock "storage-registry-lock" at
> /var/lib/nova/instances/locks/nova-storage-registry-lock lock
> /usr/lib/python2.7/dist-packages/nova/openstack/common/lockutils.py:210
> 2014-12-04 00:43:41.966 32947 DEBUG nova.openstack.common.lockutils [-]
> Semaphore / lock released "do_get_storage_users" inner
> /usr/lib/python2.7/dist-packages/nova/openstack/common/lockutils.py:252
> BTW I am using ceph and RBD to cinder
> Any Ideas??
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*Francisco J. Araya Maggiolo*
DevOp - Research & Development
KIO Networks
Mexico City
Phone: +52 (55) 8503 2600 ext. 3901
Mobile: +52 (1) (55) 6066 9025

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