10 a.m.
Hi,
I'd like to use the localdisk hook of vdsm and have configured everything according to
the readme: https://github.com/oVirt/vdsm/tree/master/vdsm_hooks/localdisk
After installing the hook, configuring the ovirt-engine, creating the volume group, adding
the custom property 'localdisk' to the virtual machine and fixing a small bug in
the localdisk-helper, vdsm creates the logical volume on the 'ovirt-local' volume
group after starting the virtual machine. Unfortunately nothing more seems to happen then.
There is no activity on the NAS which would indicate that the disk image is pulled to the
host. I can also see no errors on the host.
Is anyone currently running ovirt 4.4 with the localdisk hook?
What else can I do to find out why the image is not being copied to my host?
Thanks,
Tim
11:44 a.m.
After two minutes there is the following error messages in the vdsm.log:
=====================
2020-06-30 11:42:08,420+0200 ERROR (qgapoller/2) [virt.periodic.Operation] <bound
method QemuGuestAgentPoller._poller of <vdsm.virt.qemuguestagent.QemuGuestAgentPoller
object at 0x7f7fd47bab70>> operation failed (periodic:188)
Traceback (most recent call last):
File "/usr/lib/python3.6/site-packages/vdsm/virt/periodic.py", line 186, in
__call__
self._func()
File "/usr/lib/python3.6/site-packages/vdsm/virt/qemuguestagent.py", line 324,
in _poller
self._qga_capability_check(vm_obj)
File "/usr/lib/python3.6/site-packages/vdsm/virt/qemuguestagent.py", line 553,
in _qga_capability_check
ret = self.call_qga_command(vm, _QEMU_GUEST_INFO_COMMAND)
File "/usr/lib/python3.6/site-packages/vdsm/virt/qemuguestagent.py", line 273,
in call_qga_command
ret = vm.qemu_agent_command(cmd, _COMMAND_TIMEOUT, 0)
File "/usr/lib/python3.6/site-packages/vdsm/virt/vm.py", line 5607, in
qemu_agent_command
self._dom, command, timeout, flags)
File "/usr/lib64/python3.6/site-packages/libvirt_qemu.py", line 39, in
qemuAgentCommand
ret = libvirtmod_qemu.virDomainQemuAgentCommand(domain._o, cmd, timeout, flags)
File "/usr/lib/python3.6/site-packages/vdsm/virt/virdomain.py", line 50, in
__getattr__
% self.vmid)
vdsm.virt.virdomain.NotConnectedError: VM '6efd279a-e9bb-41b9-b805-7b6b15accc3c'
was not defined yet or was undefined
8:46 p.m.
On Tue, Jun 30, 2020 at 11:02 AM tim-nospam--- via Users
<users(a)ovirt.org> wrote:
Hi,
I'd like to use the localdisk hook of vdsm and have configured everything according
to the readme: https://github.com/oVirt/vdsm/tree/master/vdsm_hooks/localdisk
After installing the hook, configuring the ovirt-engine, creating the volume group,
adding the custom property 'localdisk' to the virtual machine and fixing a small
bug in the localdisk-helper,
What was the bug and how it was fixed?
vdsm creates the logical volume on the 'ovirt-local' volume
group after starting the virtual machine. Unfortunately nothing more seems to happen then.
There is no activity on the NAS which would indicate that the disk image is pulled to the
host. I can also see no errors on the host.
Is anyone currently running ovirt 4.4 with the localdisk hook?
I hope that nobody use this.
What else can I do to find out why the image is not being copied to
my host?
You should have logs from the hook in vdsm log.
The localdisk hook was a temporary solution and it is not recommended.
I don't think anyone is testing this code and it is likely to be broken.
We don't have a replacement with the same features, using logical volumes
on a local disk (e.g. fast ssd), but if you want to attach the entire
device to vm,
it should be possible to do this without any hacks in 4.4.
The main issue with the localdisk hooks is that engine does not understand
what the hook is doing, and the changes made by the hooks behind engine
back can cause lot of breakage. Any storage operation on the disks used
for the local disk may fail or cause trouble.
Nir
1418
days inactive
1418
days old
2 comments
2 participants
participants (2)
-
Nir Soffer -
tim-nospam＠bordemann.com