Re: [libvirt-users] [virt-tools-list] store vm xml files in another directory
On 02/08/2011 03:05 PM, Kenneth Armstrong wrote:
I know that by default, vm xml files are in /etc/libvirt/qemu/vm-name.xml, but is there a configuration somewhere that I could point to another directory? For instance, have it on something like /srv/qemu/xml/vm-name.xml which would be a GFS2 filesystem (for HA purposes)?
It isn't configurable, short of modifying the source code and recompiling. As far as sharing /etc/libvirt/qemu, Dan has responded to that question in the past: http://www.mail-archive.com/libvir-list@redhat.com/msg16921.html - Cole
Cool, thanks for the link. - Kenny On Wed, Feb 9, 2011 at 12:26 PM, Cole Robinson <crobinso@redhat.com> wrote:
On 02/08/2011 03:05 PM, Kenneth Armstrong wrote:
I know that by default, vm xml files are in /etc/libvirt/qemu/vm-name.xml, but is there a configuration somewhere that I could point to another directory? For instance, have it on something like /srv/qemu/xml/vm-name.xml which would be a GFS2 filesystem (for HA purposes)?
It isn't configurable, short of modifying the source code and recompiling.
As far as sharing /etc/libvirt/qemu, Dan has responded to that question in the past:
http://www.mail-archive.com/libvir-list@redhat.com/msg16921.html
- Cole
Here's my latest thoughts on how to do this: With 2 nodes, and using the Red Hat Cluster suite to fence the two hosts, and all vm disk images stored on shared storage (for example, an iSCSI LUN) that both hosts will have access to, and using a GFS2 formatted partition on each node. Also, using Bind Mounts to mount /etc/libvirt/qemu onto the GFS2 partition so that the vm xml files will be sync'ed up between both hosts. Does that make sense? Or would their be something simpler to try? -Kenny On Wed, Feb 9, 2011 at 1:46 PM, Kenneth Armstrong <digimars@gmail.com> wrote:
Cool, thanks for the link.
- Kenny
On Wed, Feb 9, 2011 at 12:26 PM, Cole Robinson <crobinso@redhat.com> wrote:
On 02/08/2011 03:05 PM, Kenneth Armstrong wrote:
I know that by default, vm xml files are in /etc/libvirt/qemu/vm-name.xml, but is there a configuration somewhere that I could point to another directory? For instance, have it on something like /srv/qemu/xml/vm-name.xml which would be a GFS2 filesystem (for HA purposes)?
It isn't configurable, short of modifying the source code and recompiling.
As far as sharing /etc/libvirt/qemu, Dan has responded to that question in the past:
http://www.mail-archive.com/libvir-list@redhat.com/msg16921.html
- Cole
On Wed, 9 Feb 2011 14:08:15 -0500, Kenneth Armstrong wrote:
Here's my latest thoughts on how to do this:
With 2 nodes, and
hosts, and all vm disk images stored on shared storage (for example, an iSCSI LUN) that both hosts will have access to, and using a GFS2 formatted partition on each node. Also, using Bind Mounts to mount /etc/libvirt/qemu onto
using the Red Hat Cluster suite to fence the two the GFS2 partition so that the vm xml files
will be sync'ed up between both hosts.
Does that make sense? Or would their be something simpler to try?
Why do you need shared copies of the xml?I've got a shared GFS2 file system for the VM image files, using rmganager to manage the VMs and have the xml defined statically in the libvirtd instances on the cluster members. If/when I change something in terms of the VM definition on one cluster member, I "# virsh dumpxml > ./vm.xml" and "# virsh define" it on the other members. Same UUID for the VMs on all cluster members.
Are you referring to a setup similar to this?: http://sources.redhat.com/cluster/wiki/KvmMigration - Kenny On Wed, Feb 9, 2011 at 2:33 PM, Thomas Sjolshagen <thomas@sjolshagen.net> wrote:
On Wed, 9 Feb 2011 14:08:15 -0500, Kenneth Armstrong wrote:
Here's my latest thoughts on how to do this:
With 2 nodes, and using the Red Hat Cluster suite to fence the two hosts, and all vm disk images stored on shared storage (for example, an iSCSI LUN) that both hosts will have access to, and using a GFS2 formatted partition on each node. Also, using Bind Mounts to mount /etc/libvirt/qemu onto the GFS2 partition so that the vm xml files will be sync'ed up between both hosts.
Does that make sense? Or would their be something simpler to try?
Why do you need shared copies of the xml?
I've got a shared GFS2 file system for the VM image files, using rmganager to manage the VMs and have the xml defined statically in the libvirtd instances on the cluster members. If/when I change something in terms of the VM definition on one cluster member, I "# virsh dumpxml <vm> > ./vm.xml" and "# virsh define" it on the other members. Same UUID for the VMs on all cluster members.
participants (3)
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Cole Robinson -
Kenneth Armstrong -
Thomas Sjolshagen