Created attachment 924901[details]
logs from engine and vdsm
Description of problem:
Hotplug disk to a running VM fails with the following error message from libvirt:
Thread-13::DEBUG::2014-08-07 15:40:05,898::vm::3788::vm.Vm::(hotplugDisk) vmId=`07d86581-7a0d-413c-993d-4cd2024ff82f`::Hotplug disk xml: <disk device="disk" snapshot="no" type="file">
<address bus="0x00" domain="0x0000" function="0x0" slot="0x06" type="pci"/>
<source file="/rhev/data-center/dad5e45b-b776-43fb-b818-26fbf0f93732/1e0328e9-e426-4083-8cae-9132f593b030/images/aee37ae8-eb0f-47c4-b987-83ffb147661b/4b3b61f9-92fd-482e-8f55-a0d0110674cc"/>
<target bus="virtio" dev="vdc"/>
<serial>aee37ae8-eb0f-47c4-b987-83ffb147661b</serial>
<driver cache="none" error_policy="stop" io="threads" name="qemu" type="raw"/>
</disk>
Thread-13::DEBUG::2014-08-07 15:40:05,923::libvirtconnection::143::root::(wrapper) Unknown libvirterror: ecode: 1 edom: 10 level: 2 message: internal error unable to execute QEMU command 'device_add': Device 'virt
io-blk-pci' could not be initialized
Thread-13::ERROR::2014-08-07 15:40:05,923::vm::3796::vm.Vm::(hotplugDisk) vmId=`07d86581-7a0d-413c-993d-4cd2024ff82f`::Hotplug failed
Traceback (most recent call last):
File "/usr/share/vdsm/virt/vm.py", line 3794, in hotplugDisk
self._dom.attachDevice(driveXml)
File "/usr/share/vdsm/virt/vm.py", line 625, in f
ret = attr(*args, **kwargs)
File "/usr/lib64/python2.6/site-packages/vdsm/libvirtconnection.py", line 111, in wrapper
ret = f(*args, **kwargs)
File "/usr/lib64/python2.6/site-packages/libvirt.py", line 399, in attachDevice
if ret == -1: raise libvirtError ('virDomainAttachDevice() failed', dom=self)
libvirtError: internal error unable to execute QEMU command 'device_add': Device 'virtio-blk-pci' could not be initialized
Version-Release number of selected component (if applicable):
ovirt-3.5-rc1
ovirt-engine-3.5.0-0.0.master.20140804172041.git23b558e.el6.noarch
vdsm-4.16.1-6.gita4a4614.el6.x86_64
libvirt-0.10.2-29.el6_5.10.x86_64
qemu-kvm-rhev-0.12.1.2-2.415.el6_5.14.x86_64
How reproducible:
Always
Steps to Reproduce:
1. Create a VM with 2 disks plugged to it
2. Start the VM
3. Deactivate 1 of the disks
4. Activate the disk
Actual results:
The hotplug operation fails with the mentioned error
Expected results:
Hotplug disk should work
Additional info:
logs from engine and vdsm
(In reply to Elad from comment #2)
> (In reply to Allon Mureinik from comment #1)
> > Elad, do you have a guest OS installed?
>
> Hotplug disk succeeds in case there is an OS installed
Hotplug relies on the underlying guest OS support to complete properly. The fact that it works with an OS installed proves there's no problem in VDSM's flow itself - closing.
Created attachment 924901 [details] logs from engine and vdsm Description of problem: Hotplug disk to a running VM fails with the following error message from libvirt: Thread-13::DEBUG::2014-08-07 15:40:05,898::vm::3788::vm.Vm::(hotplugDisk) vmId=`07d86581-7a0d-413c-993d-4cd2024ff82f`::Hotplug disk xml: <disk device="disk" snapshot="no" type="file"> <address bus="0x00" domain="0x0000" function="0x0" slot="0x06" type="pci"/> <source file="/rhev/data-center/dad5e45b-b776-43fb-b818-26fbf0f93732/1e0328e9-e426-4083-8cae-9132f593b030/images/aee37ae8-eb0f-47c4-b987-83ffb147661b/4b3b61f9-92fd-482e-8f55-a0d0110674cc"/> <target bus="virtio" dev="vdc"/> <serial>aee37ae8-eb0f-47c4-b987-83ffb147661b</serial> <driver cache="none" error_policy="stop" io="threads" name="qemu" type="raw"/> </disk> Thread-13::DEBUG::2014-08-07 15:40:05,923::libvirtconnection::143::root::(wrapper) Unknown libvirterror: ecode: 1 edom: 10 level: 2 message: internal error unable to execute QEMU command 'device_add': Device 'virt io-blk-pci' could not be initialized Thread-13::ERROR::2014-08-07 15:40:05,923::vm::3796::vm.Vm::(hotplugDisk) vmId=`07d86581-7a0d-413c-993d-4cd2024ff82f`::Hotplug failed Traceback (most recent call last): File "/usr/share/vdsm/virt/vm.py", line 3794, in hotplugDisk self._dom.attachDevice(driveXml) File "/usr/share/vdsm/virt/vm.py", line 625, in f ret = attr(*args, **kwargs) File "/usr/lib64/python2.6/site-packages/vdsm/libvirtconnection.py", line 111, in wrapper ret = f(*args, **kwargs) File "/usr/lib64/python2.6/site-packages/libvirt.py", line 399, in attachDevice if ret == -1: raise libvirtError ('virDomainAttachDevice() failed', dom=self) libvirtError: internal error unable to execute QEMU command 'device_add': Device 'virtio-blk-pci' could not be initialized Version-Release number of selected component (if applicable): ovirt-3.5-rc1 ovirt-engine-3.5.0-0.0.master.20140804172041.git23b558e.el6.noarch vdsm-4.16.1-6.gita4a4614.el6.x86_64 libvirt-0.10.2-29.el6_5.10.x86_64 qemu-kvm-rhev-0.12.1.2-2.415.el6_5.14.x86_64 How reproducible: Always Steps to Reproduce: 1. Create a VM with 2 disks plugged to it 2. Start the VM 3. Deactivate 1 of the disks 4. Activate the disk Actual results: The hotplug operation fails with the mentioned error Expected results: Hotplug disk should work Additional info: logs from engine and vdsm