[ovirt-users] Simple way to activate live merge in FC20 cluster
Markus Stockhausen
stockhausen at collogia.de
Thu Nov 20 18:20:20 UTC 2014
Hi Bob,
if your are on a cluster with FC20 hypervisor nodes wthout virt-preview
(like we run it with qemu 1.6.2) the simplest way to get live merge features
should be - beware NOT FULLY TESTED!
1) choose a single host (we only need a single one if we think about the required setup)
2) Install libvirt from virt-preview repos. DON'T UPDATE QEMU AS YOU BREAK LIVE MIGRATION!
3) migrate VMs you want to live merge to the host
4) do the live merge
5) migrate VMs back to original host
A quick test revealed:
# systemctl stop vdsmd
# systemctl stop libvirtd
# cd /etc/yum.repos.d
# wget http:/wget http://fedorapeople.org/groups/virt/virt-preview/fedora-virt-preview.repo
# yum update libvirt
...
# systemctl start libvirtd
# systemctl start vdsmd
#
# vdsClient -s 0 getVdsCaps | grep -i merge
---> liveMerge = 'true'
Best regards.
Markus
________________________________________
Von: Bob Doolittle [bob at doolittle.us.com]
Gesendet: Donnerstag, 20. November 2014 16:49
An: Markus Stockhausen
Cc: s k; users at ovirt.org; Daniel Helgenberger; Coffee Chou
Betreff: Re: [ovirt-users] Live Merge Functionality disabled on CentOS 6.6 Node and oVirt 3.5.0
On 11/20/2014 10:32 AM, Markus Stockhausen wrote:
> Iirc you simply need libvirt 1.2.9
Thanks!
Would you know how one could track to see if there is a plan for e,g.
Fedora 20 to include that version at some point? I suspect every distro
is different. F20 at this point includes 1.1.3. I'd like to know if I'll
have to upgrade to Fedora 21 in order to get this functionality, as this
will require some planning on my part.
Thanks again,
Bob
>
> Am 20.11.2014 16:20 schrieb Bob Doolittle <bob at doolittle.us.com>:
>
> Are there any bugs related to the changes in question that we can track
> so we know when the changes are reflected in our distros of interest?
>
> Thanks,
> Bob
>
> On 11/20/2014 03:51 AM, s k wrote:
> > Hi,
> >
> >
> > Live snapshot indeed works, only live merge is not working. I guess we
> > will have to wait until is available on CentOS.
> >
> > Thanks!
> >
> > Sokratis
> >
> >
> >
> ------------------------------------------------------------------------
> > Date: Thu, 20 Nov 2014 09:49:40 +0800
> > Subject: Re: [ovirt-users] Live Merge Functionality disabled on CentOS
> > 6.6 Node and oVirt 3.5.0
> > From: coffee.zyr at gmail.com
> > To: daniel.helgenberger at m-box.de
> > CC: sokratis123k at outlook.com; users at ovirt.org
> >
> > Hi,
> > as i know, live merge is only available from the versions in the
> > fedora virt-preview repo. please see[1]
> >
> > [1] http://www.ovirt.org/Features/Live_Merge#Current_status
> >
> > 2014-11-20 2:11 GMT+08:00 Daniel Helgenberger
> > <daniel.helgenberger at m-box.de <mailto:daniel.helgenberger at m-box.de>>:
> >
> > On 19.11.2014 14:06, s k wrote:
> > > Hello,
> > >
> > > I performed a full yum upgrade on a CentOS 6.5 Node which was
> > upgraded to 6.6
> > > and I currently the following RPM versions are installed:
> > >
> > > [root at node01 ~]# uname -a
> > > Linux node01 2.6.32-504.1.3.el6.x86_64 #1 SMP Tue Nov 11
> 17:57:25
> > UTC 2014
> > > x86_64 x86_64 x86_64 GNU/Linux
> > > [root at node01 ~]# rpm -qa |grep libvirt
> > > libvirt-python-0.10.2-46.el6_6.1.x86_64
> > > libvirt-client-0.10.2-46.el6_6.1.x86_64
> > > libvirt-lock-sanlock-0.10.2-46.el6_6.1.x86_64
> > > libvirt-0.10.2-46.el6_6.1.x86_64
> > > [root at node01 ~]#
> > > [root at node01 ~]# rpm -qa |grep kvm
> > > qemu-kvm-rhev-debuginfo-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
> > > qemu-kvm-rhev-0.12.1.2-2.415.el6_5.14.x86_64
> > > [root at node01 ~]# rpm -qa |grep qemu
> > > gpxe-roms-qemu-0.9.7-6.12.el6.noarch
> > > qemu-kvm-rhev-debuginfo-0.12.1.2-2.415.el6_5.14.x86_64
> > > qemu-img-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
> > > qemu-kvm-rhev-0.12.1.2-2.415.el6_5.14.x86_64
> > > [root at node01 ~]# rpm -qa |grep vdsm
> > > vdsm-jsonrpc-4.16.7-1.gitdb83943.el6.noarch
> > > vdsm-python-zombiereaper-4.16.7-1.gitdb83943.el6.noarch
> > > vdsm-yajsonrpc-4.16.7-1.gitdb83943.el6.noarch
> > > vdsm-xmlrpc-4.16.7-1.gitdb83943.el6.noarch
> > > vdsm-4.16.7-1.gitdb83943.el6.x86_64
> > > vdsm-python-4.16.7-1.gitdb83943.el6.noarch
> > > vdsm-cli-4.16.7-1.gitdb83943.el6.noarch
> > >
> > > The host reports that Live Snapsnot Support is Active on the
> > General Tab but
> > > I'm unable to delete a snapshot.
> > >
> > > Any ideas?
> > Hm could it be you mix up live snapshot and live merge? Live
> snapshot
> > works since 3.4.3 quite will. Live merge however is still
> unsupported as
> > I think it requires some quite new stuff from libvirt. It will
> > eventually work on EL7 [1].
> >
> > [1] https://bugzilla.redhat.com/show_bug.cgi?id=1062142
> > >
> > > Thank you,
> > >
> > > Sokratis
> > >
> >
> > --
> > Daniel Helgenberger
> > m box bewegtbild GmbH
> >
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