[ovirt-users] Simple way to activate live merge in FC20 cluster
Bob Doolittle
bob at doolittle.us.com
Thu Nov 20 18:38:37 UTC 2014
Thanks Markus, but I have a single, self-hosted node, so cannot migrate VMs.
Is it your assumption that F20 will never be updated with libvirt 1.2.9?
If that's the case, my best course (in a month or so when F21 is
released) is probably to export all my VMs, install F21,
reinstall/reconfigure oVirt, import the old Export Domain, and then
import my VMs again.
-Bob
On 11/20/2014 01:20 PM, Markus Stockhausen wrote:
> 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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>> >
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