On 02/16/2015 04:55 AM, Soeren Malchow wrote:
Dear all,
we ahve a setup with several hosts running fedora 10 with the
virt-preview packages installed (for snapshot live merge) and a hosted
engine running centos 6.6-
We are experiencing a problem with the Live Migration of the Hosted
Engine, in the case of setting the host for the Engine into
maintenance as well as a manual migration.
I tried this on the “ovirtmgmt” network and when that failed I did
some research and tried to use another network interface (separate
from ovirtmgmt on layer 2), this also fails.
It looks as if the migration is still going through the ovirtmgmt
interface, at least judging from the network traffic, and I think the
error that I found (RHBZ#919201) is actually the right one.
--
vdsm.log:Thread-6745::WARNING::2015-02-16
03:22:25,743::migration::458::vm.Vm::(monitor_migration)
vmId=`XXX`::Migration stalling: remaining (35MiB) > lowmark (15MiB).
Refer to RHBZ#919201.
vdsm.log:Thread-6745::WARNING::2015-02-16
03:22:35,745::migration::458::vm.Vm::(monitor_migration)
vmId=`XXX`::Migration stalling: remaining (129MiB) > lowmark (15MiB).
Refer to RHBZ#919201.
vdsm.log:Thread-6745::WARNING::2015-02-16
03:22:45,747::migration::458::vm.Vm::(monitor_migration)
vmId=`XXX`::Migration stalling: remaining (42MiB) > lowmark (15MiB).
Refer to RHBZ#919201.
vdsm.log:Thread-6745::WARNING::2015-02-16
03:22:55,749::migration::458::vm.Vm::(monitor_migration)
vmId=`XXX`::Migration stalling: remaining (88MiB) > lowmark (15MiB).
Refer to RHBZ#919201.
--
The ovirtmgmt interface is 2 x 1Gbit (LACP connected to Dell Switches
with MLAG) and by far not fully utilized.
Can anyone help me where to go form here ?
still need the whole log. probably the guest (engine) is doing lots of
memory i/o if you got a fair amount of running VMs and Hosts. that will
stalls the migration because
the guest pages are getting dirty faster than qemu can copy.
you have 2 options:
1. try several more times.
2. shutdown the engine vm, it should start on another host
Regards
Soeren
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