[Yahoo-eng-team] [Bug 1623703] [NEW] libvirt: hard reboot incorrectly create nova/instances//_disk with lvm backend

Public bug reported: Configure Nova compute to use lvm backend, spawn an instance based on glance image, under folder nova/instances/ we don't see any _disk file and this is correct. Next, if we do a hard reboot on this instance then libvirt incorrectly creates file nova/instances//_disk. Steps

[Yahoo-eng-team] [Bug 1617049] [NEW] Nova to support resize or cold-migrate under LVM backing-storage

Public bug reported: Currently Nova doesn't support resize or cold-migrate under LVM backing- storage. Do resize/cold-migrate causes the following exception: MigrationPreCheckError: Migration pre-check error: Migration is not supported for LVM backed instances. ** Affects: nova

[Yahoo-eng-team] [Bug 1613770] [NEW] Improve error log when instance snapshot fails

Public bug reported: If glance backend store is set to use filesystem storage and this storage is running out of space when if glance is trying to create a instance snapshot, then in nova-compute log the following message is displayed: 2016-08-08 22:24:31.644 TRACE oslo_messaging.rpc.server

[Yahoo-eng-team] [Bug 1604116] [NEW] overcommit ratios should not be able to set to negative value

on devstack: * On compute node, modify /etc/nova/nova.conf to have "cpu_allocation_ratio = -1.0" * Restart nova-compute (n-cpu) and nova-compute service is up and running (we should expect nova-compute to fail to start) ** Affects: nova Importance: Undecided Assignee: vu tra