On Fri, Nov 21, 2014 at 4:01 PM, Markus Stockhausen <stockhausen@collogia.de
wrote:
Hi Gianluca,
it took me some time to correct my misunderstanding. I advised to update only libvirt as I was aware of the (old) block-commit command of qemu. With that you can merge snapshots in the chain (history) but not into the active layer (the current running state). Merging data into the active layer needs active-commit that is available since qemu 2.0 . That explains the error you got.
OVirt makes use of the second scenario so no luck without a full installation of virt-preview repos or a jump towards FC21.
Markus
it seems not so... In my F20 oVirt 3.5 All-In-One with libvirt-1.2.9.1-1.fc20.x86_64 and qemu-1.6.2-10.fc20.x86_64 I have: Situation on a C7 VM Date Status Description Current OK Active VM 2014-Nov-23, 12:01 OK one_after_first 2014-Nov-21, 00:54 OK test per live merge - Trying to delete "one_after_first" Thread-13::DEBUG::2014-11-23 12:04:15,782::libvirtconnection::143::root::(wrapper) Unknown libvirterror: ecode: 67 edom: 10 l evel: 2 message: unsupported configuration: active commit not supported with this QEMU binary Thread-13::ERROR::2014-11-23 12:04:15,783::vm::5751::vm.Vm::(merge) vmId=`0ba6a56b-542c-480e-8bab-88aea9195302`::Live merge f ailed (job: 10c6aed1-3f03-439a-b037-e1b6c55ecada) Traceback (most recent call last): File "/usr/share/vdsm/virt/vm.py", line 5747, in merge flags) File "/usr/share/vdsm/virt/vm.py", line 670, in f ret = attr(*args, **kwargs) File "/usr/lib/python2.7/site-packages/vdsm/libvirtconnection.py", line 111, in wrapper ret = f(*args, **kwargs) File "/usr/lib64/python2.7/site-packages/libvirt.py", line 638, in blockCommit if ret == -1: raise libvirtError ('virDomainBlockCommit() failed', dom=self) libvirtError: unsupported configuration: active commit not supported with this QEMU binary - Trying to delete "test per live merge" Thread-13::DEBUG::2014-11-23 12:10:35,901::libvirtconnection::143::root::(wrapper) Unknown libvirterror: ecode: 67 edom: 10 l evel: 2 message: unsupported configuration: this qemu doesn't support relative blockpull Thread-13::ERROR::2014-11-23 12:10:35,902::vm::5751::vm.Vm::(merge) vmId=`0ba6a56b-542c-480e-8bab-88aea9195302`::Live merge f ailed (job: e0433ad1-cb2c-4b09-b2fc-9c9d4e513957) Traceback (most recent call last): File "/usr/share/vdsm/virt/vm.py", line 5747, in merge flags) File "/usr/share/vdsm/virt/vm.py", line 670, in f ret = attr(*args, **kwargs) File "/usr/lib/python2.7/site-packages/vdsm/libvirtconnection.py", line 111, in wrapper ret = f(*args, **kwargs) File "/usr/lib64/python2.7/site-packages/libvirt.py", line 638, in blockCommit if ret == -1: raise libvirtError ('virDomainBlockCommit() failed', dom=self) libvirtError: unsupported configuration: this qemu doesn't support relative blockpull