This is a known issue in folsom and stable/folsom. You should turn off the image cache if you are using shared storage.
https://bugs.launchpad.net/nova/+bug/1078594 See the upgrade notes here to see how to disable the imagecache run: http://wiki.openstack.org/ReleaseNotes/Folsom#OpenStack_Compute_.28Nova.29 Note that the current version of stable/folsom (and 2012.2.1) turn off imagecache by default. Vish On Dec 5, 2012, at 9:56 AM, Davide Guerri <[email protected]> wrote: > Hi all, > I've a bad problem with nova.virt.libvirt.imagecache: it keeps removing > "good" (not stale) base images even if they are used by running VMs. > > I have a multi-node installation with shared storage (as described here: > http://docs.openstack.org/trunk/openstack-compute/admin/content/configuring-live-migrations.html) > > Here is a log except: > > --- > nova-compute.log:2012-12-05 16:21:29 INFO nova.virt.libvirt.imagecache [-] > Removable base files: > /var/lib/nova/instances/_base/cf38dbb4e4468fe68f8486ed6ade984f766086cc > /var/lib/nova/instances/_base/cf38dbb4e4468fe68f8486ed6ade984f766086cc_80 > /var/lib/nova/instances/_base/7fab5ccd237dbb7428e9a47e26eb278e9b66e357 > /var/lib/nova/instances/_base/7fab5ccd237dbb7428e9a47e26eb278e9b66e357_40 > /var/lib/nova/instances/_base/7fab5ccd237dbb7428e9a47e26eb278e9b66e357_80 > /var/lib/nova/instances/_base/eed4493e949ae9303c0342c50860f1ba368e8177 > /var/lib/nova/instances/_base/eed4493e949ae9303c0342c50860f1ba368e8177_80 > /var/lib/nova/instances/_base/34c234536ae3df4ea641258c57c35872c10cd0d2 > nova-compute.log:2012-12-05 16:21:29 INFO nova.virt.libvirt.imagecache [-] > Removing base file: > /var/lib/nova/instances/_base/cf38dbb4e4468fe68f8486ed6ade984f766086cc_80 > nova-compute.log:2012-12-05 17:11:34 INFO nova.virt.libvirt.imagecache [-] > Active base files: > /var/lib/nova/instances/_base/7fab5ccd237dbb7428e9a47e26eb278e9b66e357_40 > /var/lib/nova/instances/_base/eed4493e949ae9303c0342c50860f1ba368e8177_80 > /var/lib/nova/instances/_base/cf38dbb4e4468fe68f8486ed6ade984f766086cc_80 > --- > > > For my understanding the backing file > eed4493e949ae9303c0342c50860f1ba368e8177_80 is removed even if it's > considered Active. > > Actually the node that is removing base files is not the node where instances > related to those backing files run. > > It's correct to share the whole /var/lib/nova/instances/ directory or the > "_base" subdirectory should reside locally to each node? > > Thanks in advance for any help you can provide. > > Davide. > _______________________________________________ > Mailing list: https://launchpad.net/~openstack > Post to : [email protected] > Unsubscribe : https://launchpad.net/~openstack > More help : https://help.launchpad.net/ListHelp _______________________________________________ Mailing list: https://launchpad.net/~openstack Post to : [email protected] Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp
