Hello, We are having this issue in production and I have since pushed for a fix for this.
We solved it by removing the DiskFilter filter, ignore any RT data from nova and seen in horizon and keep close monitoring on our block storage usage. nova.conf: #scheduler_default_filters = RetryFilter, AvailabilityZoneFilter, RamFilter, DiskFilter, ComputeFilter, ComputeCapabilitiesFilter, ImagePropertiesFilter, ServerGroupAntiAffinityFilter, ServerGroupAffinityFilter scheduler_default_filters = RetryFilter, AvailabilityZoneFilter, RamFilter, ComputeFilter, ComputeCapabilitiesFilter, ImagePropertiesFilter, ServerGroupAntiAffinityFilter, ServerGroupAffinityFilter Default options is the one commented out, the other one has DiskFilter removed. We haven't had any issues after removing the DiskFilter. Best regards On 08/15/2016 10:17 AM, kostiantyn.volenbovs...@swisscom.com wrote: > Hi, > > Just to add that this bug was recently brought up in openstack-dev [1] > > it sounds that you are waiting for fix via [2] or, probably more likely [3] > Disabling DiskFilter sounds like OK workaround in case your VMs are never > booted from image in your OpenStack Region(s). > But if I understand the fault - the migrate/resize/live > migrate/rebuild/evacuate will not work because > . assuming that on target Compute Host you don't have local disk - and your > flavor has more than 0 GB for root and/or ephemeral disk > -it would fail. > > So I would say that setting your root disk space to '0' in the flavor might > be a better workaround > > BR, > Konstantin > [1] > http://lists.openstack.org/pipermail/openstack-dev/2016-August/101566.html > [2] https://review.openstack.org/#/c/200870/ > [3] https://review.openstack.org/#/c/355091/ > > >> -----Original Message----- >> From: William Josefsson [mailto:william.josef...@gmail.com] >> Sent: Sunday, August 14, 2016 5:47 PM >> To: openstack-operators@lists.openstack.org >> Subject: [Openstack-operators] DiskFilter Disabled - No valid host was found >> >> Hello, I got Error, no valid host was found while trying to provision and I >> could in >> nova-scheduler.log see that the DiskFilter failed to find a compute host. My >> OS is >> CentOS7/ running Liberty. >> >> If I'm not mistaken, it is a bug that DiskFilter checks space available on >> compute- >> host / partition even when I'm using iSCSI and RBD backends. The / is no way >> near full. >> https://bugs.launchpad.net/nova/+bug/1358566 >> >> Can anyone confirm whether it is fine to disable DiskFilter if I'm using >> iSCSI and >> RBD backend or would anything else brake? thx will >> >> _______________________________________________ >> OpenStack-operators mailing list >> OpenStack-operators@lists.openstack.org >> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators > _______________________________________________ > OpenStack-operators mailing list > OpenStack-operators@lists.openstack.org > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators > _______________________________________________ OpenStack-operators mailing list OpenStack-operators@lists.openstack.org http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators
