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Description of problem: EL 6.5 with oVirt 3.5 release indicates "Live Snapshot Support: Active" Upgrading host to EL 6.6, oVirt 3.5 now states "Live Snapshot Support: Inactive" and now unable to create live snapshots on host. No longer able to create live snapshot on EL 6.6 Version-Release number of selected component (if applicable): #====== A functional EL 6.5 system module versions... OS Version: RHEL - 6 - 5.el6.centos.11.2 Kernel Version: 2.6.32 - 431.29.2.el6.x86_64 KVM Version: 0.12.1.2 - 2.415.el6_5.14 LIBVERT Version: libvirt-0.10.2-29.el6_5.12 VDSM Version: vdsm-4.16.7-1.gitdb83943.el6 Live Snapshot Support: Active #====== A non-functional EL 6.6 system module versions... OS Version: RHEL - 6 - 6.el6.centos.12.2 Kernel Version: 2.6.32 - 504.el6.x86_64 KVM Version: 0.12.1.2 - 2.415.el6_5.14 LIBVERT Version: libvirt-0.10.2-46.el6 VDSM Version: vdsm-4.16.7-1.gitdb83943.el6 Live Snapshot Support: Inactive How reproducible: Check "Live Snapshot Support" on a EL 6.5 system in oVirt UI reports "Active". Upgrade a functional EL 6.5 system to EL 6.6 system and examine the Ovirt UI for "Live Snapshot Support" and it reports "Inactive". Steps to Reproduce: 1. 2. 3. Actual results: Expected results: Additional info: #===== Modules on a functional EL 6.5 system: qemu-kvm-rhev-0.12.1.2-2.415.el6_5.14.x86_64 qemu-kvm-rhev-tools-0.12.1.2-2.415.el6_5.14.x86_64 kernel-2.6.32-431.29.2.el6.x86_64 qemu-kvm-rhev-0.12.1.2-2.415.el6_5.14.x86_64 qemu-kvm-rhev-tools-0.12.1.2-2.415.el6_5.14.x86_64 libvirt-client-0.10.2-29.el6_5.12.x86_64 libvirt-python-0.10.2-29.el6_5.12.x86_64 libvirt-lock-sanlock-0.10.2-29.el6_5.12.x86_64 libvirt-0.10.2-29.el6_5.12.x86_64 vdsm-4.16.7-1.gitdb83943.el6.x86_64 #===== Modules on a non-functional EL 6.6 system: qemu-kvm-rhev-tools-0.12.1.2-2.415.el6_5.14.x86_64 qemu-kvm-rhev-0.12.1.2-2.415.el6_5.14.x86_64 kernel-2.6.32-504.el6.x86_64 qemu-kvm-rhev-tools-0.12.1.2-2.415.el6_5.14.x86_64 qemu-kvm-rhev-0.12.1.2-2.415.el6_5.14.x86_64 libvirt-client-0.10.2-46.el6.x86_64 libvirt-python-0.10.2-46.el6.x86_64 libvirt-lock-sanlock-0.10.2-46.el6.x86_64 libvirt-0.10.2-46.el6.x86_64 vdsm-4.16.7-1.gitdb83943.el6.x86_64
This may libvirt change may have broke live snapshot: Bug 1150609 - libvirt misreport live snapshot capability https://bugzilla.redhat.com/show_bug.cgi?id=1150609
(In reply to scott.worthington from comment #1) > This may libvirt change may have broke live snapshot: > > Bug 1150609 - libvirt misreport live snapshot capability > https://bugzilla.redhat.com/show_bug.cgi?id=1150609 most likely it is. It seems you are not running patched libvirt. bugged: libvirt-0.10.2-46.el6.x86_64 patched: libvirt-0.10.2-46.el6_6.1.x86_64.rpm To check that, it is enough to follow these steps 1 on the hypervisor host, run $ virsh -r capabilities | grep -i snapshot 2 the following is output from a misbehaving libvirt: <disksnapshot default='off' toggle='no'/> <disksnapshot default='off' toggle='no'/> 3 if libvirt output does _not_ contain the 'disksnapshot' element, so if command as per #1 yields nothing, libvirt is patched. 4 lacking the disksnapshot reporting, vdsm assumes the live snapshot is working, so the Engine will allow the operation.
Possibly a dup of BZ 1149460
*** This bug has been marked as a duplicate of bug 1149460 ***