2:20 p.m.
Hi,
Am 05.06.2018 um 22:11 schrieb Nir Soffer:
On Fri, Jun 1, 2018 at 3:54 PM Stefan Hajnoczi <stefanha(a)gmail.com
<mailto:stefanha@gmail.com>> wrote:
On Thu, May 31, 2018 at 11:02:01PM +0300, Nir Soffer wrote:
> On Thu, May 31, 2018 at 1:55 AM Bernhard Dick <bernhard(a)bdick.de
<mailto:bernhard@bdick.de>> wrote:
>
> > Hi,
> >
> > I found the reason for my timeout problems: It is the version
of librbd1
> > (which is 0.94.5) in conjunction with my CEPH test-environment
which is
> > running the luminous release.
> > When I install the librbd1 (and librados2) packages from the
> > centos-ceph-luminous repository (version 12.2.5) I'm able to
start and
> > migrate VMs inbetween the hosts.
> >
>
> vdsm does not require librbd since qemu brings this dependency,
and vdsm
> does not access ceph directly yet.
>
> Maybe qemu should require newer version of librbd?
Upstream QEMU builds against any librbd version that exports the
necessary APIs.
The choice of library versions is mostly up to distro package
maintainers.
Have you filed a bug against Ceph on the distro you are using?
Thanks for clearing this up Stefan.
Bernhard, can you give more info about your Linux version and
installed packages (.e.g qemu-*)?
Sure. I have two test-systems. The first is
running a stock oVirt Node
4.3 which states "CentOS Linux release 7.5.1804 (Core)" as version
string. The qemu and ceph packages are:
Name : qemu-img-ev
Arch : x86_64
Epoch : 10
Version : 2.10.0
Release : 21.el7_5.3.1
Name : qemu-kvm-common-ev
Arch : x86_64
Epoch : 10
Version : 2.10.0
Release : 21.el7_5.3.1
Name : qemu-kvm-ev
Arch : x86_64
Epoch : 10
Version : 2.10.0
Release : 21.el7_5.3.1
Name : librados2
Arch : x86_64
Epoch : 1
Version : 0.94.5
Release : 2.el7
Name : librbd1
Arch : x86_64
Epoch : 1
Version : 0.94.5
Release : 2.el7
The Centos 7 system is a centos minimal installation with the following
repos being enabled:
CentOS-7 - Base
CentOS-7 - Updates
CentOS-7 - Extras
ovirt-4.2-epel
ovirt-4.2-centos-gluster123
ovirt-4.2-virtio-win-latest
ovirt-4.2-centos-qemu-ev
ovirt-4.2-centos-opstools
centos-sclo-rh-release
ovirt-4.2-centos-ovirt42
ovirt-4.2
The version numbers for the qemu packages are the same as above as
they're from the ovirt-4.2-centos-qemu-ev repository. Also the version
numbers for librados2 and librbd1 match, while they're from the
centos-base (instead of ovirt-base) repository.
When I activate the ceph-centos-luminous repository librbd1 and
librados2 get upgraded to the following versions (leaving the qemu
packages untouched, what is as expected):
Name : librados2
Arch : x86_64
Epoch : 2
Version : 12.2.5
Release : 0.el7
Name : librbd1
Arch : x86_64
Epoch : 2
Version : 12.2.5
Release : 0.el7
So from my perspective on side of oVirt there should be thaught about a
way to add a more recent ceph library version into the ovirt node image,
as it is not the most common task to add extra repositories here (and
I'm not whether that might break the image based upgrade-path).
I will go for Centos based hosts in my case, as I'm a bit more flexible
than so at least for me there is no real need to get the above noted
implemented quickly :-)
Regards
Bernhard