[ovirt-users] Simple way to activate live merge in FC20 cluster

[Markus Stockhausen]

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

________________________________
Von: users-bounces at ovirt.org [users-bounces at ovirt.org]" im Auftrag von "Markus Stockhausen [stockhausen at collogia.de]
Gesendet: Freitag, 21. November 2014 08:38
An: Gianluca Cecchi
Cc: s k; users at ovirt.org
Betreff: Re: [ovirt-users] Simple way to activate live merge in FC20 cluster


Wow. Very quick test. Thanks for sharing the results. I will have a look what qemu 1.6.2 might need.

Regarding stability of qemu 2.1.2: You should scan the qemu stable mailing list if some severe fixes have been  posted after the release. If you feel comfortable take qemu from  the preview repos too.

Just a simple yum update.

Remark: With the advent  of FC21 virt-preview for FC20 might see  no further  fixes.

Markus

Am 21.11.2014 01:46 schrieb Gianluca Cecchi <gianluca.cecchi at gmail.com>:
On Fri, Nov 21, 2014 at 1:38 AM, Gianluca Cecchi <gianluca.cecchi at gmail.com<mailto:gianluca.cecchi at gmail.com>> wrote:


[root at tekkaman qemu]# rpm -q qemu
qemu-1.6.2-10.fc20.x86_64

[snip]

libvirtError: unsupported configuration: active commit not supported with this QEMU binary



OK, I reply to myself
The error above is explanatory...
I didn't notice that only the libvirt part is included in the ovirt-3.5-fedora-virt-preview repo:

"
[ovirt-3.5-fedora-virt-preview]
name=Virtualization packages from Rawhide built for latest Fedora
baseurl=http://fedorapeople.org/groups/virt/virt-preview/fedora-$releasever/$basearch
enabled=1
skip_if_unavailable=1
gpgcheck=0
includepkgs=libvirt*
"

SO I think I need qemu-2.1.2-6.fc20.x86_64.rpm and probably other packages as provided by virt-preview.
What could be the safest way to include further qemu packages?
How stable is qemu 2.1.2 at this time?

Thanks,
Gianluca
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