[fedora-virt] KVM high available
Dor Laor
dlaor at redhat.com
Tue Jan 18 16:29:30 UTC 2011
On 01/18/2011 02:06 PM, iarly selbir wrote:
> I configured a Gluster volume to work as my backend storage instead gfs
> but I can't finish the setup of a vm, after click em
> finish(virt-manager) it show me this error:
>
> Unable to complete install 'libvirt.libvirtError internal error unable
> to start guest: qemu: could not open disk image
> /var/lib/libvirt/images/test.img
>
> Traceback (most recent call last):
> File "/usr/share/virt-manager/virtManager/create.py", line 724, in
> do_install
> dom = guest.start_install(False, meter = meter)
> File "/usr/lib/python2.4/site-packages/virtinst/Guest.py", line 541,
> in start_install
> return self._do_install(consolecb, meter, removeOld, wait)
> File "/usr/lib/python2.4/site-packages/virtinst/Guest.py", line 633,
> in _do_install
> self.domain = self.conn.createLinux(install_xml, 0)
> File "/usr/lib64/python2.4/site-packages/libvirt.py", line 974, in
> createLinux
> if ret is None:raise libvirtError('virDomainCreateLinux() failed',
> conn=self)
> libvirtError: internal error unable to start guest: qemu: could not open
> disk image /var/lib/libvirt/images/test.img
>
> # /var/log/messages
>
> Jan 18 05:36:05 kvmsrv001 libvirtd: 05:36:05.227: error : internal error
> Timed out while reading console log output
> Jan 18 05:36:05 kvmsrv001 libvirtd: 05:36:05.227: error : internal error
> unable to start guest: qemu: could not open disk image
> /var/lib/libvirt/images/test.img
>
>
> The file test.img is created but the domain is not, If I umount
> /var/lib/libvirt/images (mount point to my gluster volume) all works fine.
>
> Does anyone experienced with this?
Seems like there is some sort of an access/permission issue.
Since your disk should be shared, make sure that it's there in the
libvirt xml and the file is writable.
>
>
> - -
> iarlyy selbir
>
> :wq!
>
>
>
> On Tue, Jan 18, 2011 at 3:52 AM, wariola at gmail.com
> <mailto:wariola at gmail.com> <wariola at gmail.com
> <mailto:wariola at gmail.com>> wrote:
>
> I think u can use cluster suite and fence towards Libvirt as a
> fencing device.
>
> (Tho I just know the theory, never tried it myself)
>
> -wariola-
>
> On Mon, Jan 17, 2011 at 4:17 PM, Dor Laor <dlaor at redhat.com
> <mailto:dlaor at redhat.com>> wrote:
>
> On 01/14/2011 08:34 PM, iarly selbir wrote:
> > Sorry, I forgot to mentions it, Yes I have this configuration two
> > failover domain, first with host-1 on top, and other with
> host-2 on top.
> >
> > My question is, how you guys are configuring your guests
> resources to
> > failover from on hosts to another, remembering that I have
> same machines
> > on two kvm hosts, i.e. kvm001 has guest001 on, and kvmsrv002 has
> > guest001 ( It must be powered on just in fail of guest0001 on
> kvm001)
>
> Using hearbeat/light cluster mgmt ala Linux HA package might be
> a good
> option for you.
>
> >
> > I hope being clear enough.
> >
> > Thank you so much.
> >
> > - -
> > iarlyy selbir
> >
> > :wq!
> >
> >
> >
> > On Fri, Jan 14, 2011 at 3:18 PM, Thomas Sjolshagen
> > <thomas at sjolshagen.net <mailto:thomas at sjolshagen.net>
> <mailto:thomas at sjolshagen.net <mailto:thomas at sjolshagen.net>>>
> wrote:
> >
> > On Fri, 14 Jan 2011 14:19:52 -0300, iarly selbir
> <iarlyy at gmail.com <mailto:iarlyy at gmail.com>
> > <mailto:iarlyy at gmail.com <mailto:iarlyy at gmail.com>>> wrote:
> >
> >> Hi there,
> >> Hi I'm joining today an would like to share my knowledge
> with
> >> virtualization and get more = )
> >> when KVM-HOST-001 fail, the KVM-HOST-002 take over all
> machines
> >> from other host, I'm sharing a storage volume between
> two nodes
> >> (gfs2), so all hosts can see the guest images, but how to
> >> configure the clusters resources to migrate the guests?
> this is my
> >> question and any suggestions will be appreciated.
> > Assuming you're using libvirt to manage the VM's
> (guests), I'd
> > configure them as <vm> resources in rgmanager and make
> them members
> > of a failover group with the highest (shows up as the lowest
> > priority number in the example) priority to the
> KVM-HOST-* you want
> > the guest to start on (if it's available).
> > A couple of (example) <vm> resource I have configured in
> my 2-node
> > GFS2 based KVM cluster (some of the info in the vm
> resource tag is
> > actually not necessary, but I was both experimenting and
> playing it
> > safe when I set this up)
> > <rm>
> > <failoverdomains>
> > <failoverdomain name="prefer-virt0" restricted="0" ordered="1">
> > <failoverdomainnode name="virt0-backup" priority="10" />
> > <failoverdomainnode name="virt1-backup" priority="20" />
> > </failoverdomain>
> > <failoverdomain name="prefer-virt1" restricted="0" ordered="1">
> > <failoverdomainnode name="virt1-backup" priority="10" />
> > <failoverdomainnode name="virt0-backup" priority="20" />
> > </failoverdomain>
> > </failoverdomains>
> > <!-- VM resources -->
> > <vm name="imap1" autostart="1" recovery="restart" migrate="live"
> > domain="prefer-virt0" use_virsh="1" hypervisor="qemu" />
> > <vm name="imap2" autostart="1" recovery="restart" migrate="live"
> > domain="prefer-virt1" use_virsh="1" hypervisor="qemu" />
> > </rm>
> > Hope this helps to illustrate.
> > // Thomas
> >
> >
> >
> >
> > _______________________________________________
> > virt mailing list
> > virt at lists.fedoraproject.org
> <mailto:virt at lists.fedoraproject.org>
> > https://admin.fedoraproject.org/mailman/listinfo/virt
>
> _______________________________________________
> virt mailing list
> virt at lists.fedoraproject.org <mailto:virt at lists.fedoraproject.org>
> https://admin.fedoraproject.org/mailman/listinfo/virt
>
>
>
>
> --
> .: war|ola :.
> Use Fedora Linux for better computing experience
> http://fedoraproject.org
>
>
More information about the virt
mailing list