| Posted | Nick | Remark | |
|---|---|---|---|
| #openstack-nova - 2018-10-23 | |||
| 11:43:30 | jangutter | sean-k-mooney: managed=true generally means that it will auto-bind vfio-pci to the device before attempting passthrough? | |
| 11:43:42 | bauzas | jangutter, sean-k-mooney: context ? | |
| 11:43:45 | sean-k-mooney | jangutter: sorry where was the libvirt xml i missed that | |
| 11:43:58 | sean-k-mooney | bauzas: trying to help pvc_ with there vgpu issue | |
| 11:44:15 | bauzas | and? | |
| 11:44:16 | sean-k-mooney | bauzas: pvc_ is seeing a weird iommu error | |
| 11:44:22 | jangutter | hang on, looking up the libxml doc. | |
| 11:44:45 | bauzas | we don't manage the iommu group | |
| 11:45:05 | jangutter | (rofl) s/libxml/libvirt/ | |
| 11:45:32 | sean-k-mooney | bauzas: yes that is managed by the uefi and kernel | |
| 11:46:12 | bauzas | oh wait | |
| 11:46:13 | jangutter | sean-k-mooney: when doing https://libvirt.org/formatdomain.html#elementsHostDevSubsys <--- there's a 'managed=yes' element in the xml. if that's set it will do the vfio-pci binding for you. | |
| 11:46:24 | bauzas | is pvc_ doing PXI | |
| 11:46:26 | sean-k-mooney | bauzas: pvc_ is getting Verify all devices in group 58 are bound to vfio-<bus> or pci-stub and not already in use | |
| 11:46:36 | bauzas | pci passthrough? | |
| 11:47:02 | pvc_ | im using vgpu bauzas | |
| 11:47:03 | sean-k-mooney | bauzas: no pvc_ is trying to do vgpu passthrouhg not pci | |
| 11:47:29 | sean-k-mooney | bauzas: this is there flavor http://paste.openstack.org/show/732799/ | |
| 11:47:58 | bauzas | sec, GPU passthrough? | |
| 11:47:59 | sean-k-mooney | and pvc_ has set the gpu type in the config to nvidia-160 | |
| 11:48:08 | bauzas | I'm confused | |
| 11:48:25 | jangutter | pvc_: what does "readlink /sys/bus/pci/devices/0000:06:00.0" say? | |
| 11:48:32 | bauzas | virtual GPU or GPU passthrough? | |
| 11:48:45 | sean-k-mooney | bauzas: pvc_ has a tesla gp100 and is trying to ues the mdev based virtual gpu | |
| 11:49:36 | bauzas | then don't do vfio bus | |
| 11:49:44 | bauzas | or pci stub | |
| 11:50:06 | bauzas | just use the nvidia kernel module | |
| 11:50:10 | jangutter | aaah, the penny drops. | |
| 11:50:11 | sean-k-mooney | pvc_: can you provide the libvirt xml that nova generated so we can see what its doing | |
| 11:50:37 | pvc_ | i add an option of options vfio-pci ids=10de:15f8 should i disable this? | |
| 11:50:44 | pvc_ | then new error is occured | |
| 11:50:49 | bauzas | sean-k-mooney : I think pvc_ is mixing two different things | |
| 11:50:55 | pvc_ | 2018-10-23 11:49:46.754 7 WARNING nova.virt.libvirt.driver [req-a3570604-eed3-4f8f-a244-202ac2b92b7d - - - - -] Error from libvirt while getting description of instance-00000001: [Error Code 42] Domain not found: no domain with matching uuid '2ac6c395-5f92-4e9e-a52a-cf90b9d551c5' (instance-00000001): libvirtError: Domain not found: no domain with matching uuid '2ac6c395-5f92-4e9e-a52a-cf90b9d551c5' (instance-00000001) | |
| 11:50:57 | openstackgerrit | Jim Rollenhagen proposed openstack/nova-specs master: Use conductor groups to partition nova-compute services for Ironic https://review.openstack.org/609709 | |
| 11:51:34 | sean-k-mooney | pvc_: you should not be disableing or foceing vfio-pci | |
| 11:52:11 | sean-k-mooney | you should allow it to be loaded if need but oterwise do not set any options for the vfio kernel module at all | |
| 11:53:32 | pvc_ | http://paste.openstack.org/show/732806/ | |
| 11:54:06 | bauzas | yup this | |
| 11:54:08 | sean-k-mooney | pvc_: the phyical gpu needs to be bound to the nvidia grid driver and the mdevs will be created via the vfio framwork in the kenel but you should not force the pgpu to use vfio-pci | |
| 11:54:22 | pvc_ | i need to remove that? | |
| 11:54:24 | bauzas | yup it's only for GPU passthrough | |
| 11:54:27 | pvc_ | okay wait | |
| 11:54:30 | bauzas | hence my confusion | |
| 11:54:30 | pvc_ | i'll remove | |
| 11:54:56 | sean-k-mooney | bauzas: im guessing the driver in use should be nvidia_vgpu_vfio or nvida correct | |
| 11:55:10 | sean-k-mooney | praobly nvidia_vgpu_vfio | |
| 11:55:15 | pvc_ | i reboot again the hypervisor wait | |
| 11:56:52 | bauzas | sean-k-mooney, I don't remember the module name but yeah something like that | |
| 11:57:30 | pvc_ | bauzas is it possible to use the 12vgpus of my gpu? | |
| 11:57:42 | bauzas | FWIW, I'll have connection issues this afternoon due to some planned outage in my street | |
| 11:58:13 | sean-k-mooney | well of the 3 nouveau, nvidia_vgpu_vfio, nvidia. nouveau is the opensouce driver for the pgpu, nvidia is the binary driver from nvida for the same so that just leaves nvidia_vgpu_vfio | |
| 11:59:51 | sean-k-mooney | pvc_: that depends on the mdev type you selected. but you should be able to however you can only request 1 vgpu per guest currently | |
| 12:00:03 | pvc_ | 06:00.0 3D controller [0302]: NVIDIA Corporation GP100GL [Tesla P100 PCIe 16GB] [10de:15f8] (rev a1) Subsystem: NVIDIA Corporation Device [10de:118f] Kernel driver in use: nvidia | |
| 12:00:23 | pvc_ | it's already nvidia | |
| 12:00:37 | pvc_ | http://paste.openstack.org/show/732807/ | |
| 12:01:10 | sean-k-mooney | pvc_: yes but it may need to be nvidia_vgpu_vfio. nvidia is gust the normal binary driver for using the gpu on the host | |
| 12:01:31 | sean-k-mooney | best thing to do is try and boot a vm and see what happens | |
| 12:02:10 | pvc_ | same error :( http://paste.openstack.org/show/732808/ | |
| 12:02:54 | pvc_ | http://paste.openstack.org/show/732808/ bauzas and sean-k-mooney | |
| 12:04:33 | sean-k-mooney | pvc_: in this case try unbinding the card from nvdia driver and bind it to nvidia_vgpu_vfio | |
| 12:04:51 | pvc_ | noted on this | |
| 12:04:54 | pvc_ | i add this on module | |
| 12:05:02 | pvc_ | options nvidia_vgpu_vfio ids=10de:15f8 | |
| 12:05:39 | sean-k-mooney | can yo bind it by hand instad of via the moduel file to test it | |
| 12:05:57 | pvc_ | how can i bind it? i'm sorry im not done it before | |
| 12:05:59 | bauzas | that's super weird | |
| 12:06:33 | pvc_ | this is my conf | |
| 12:06:33 | pvc_ | http://paste.openstack.org/show/732809/ | |
| 12:07:16 | bauzas | pvc_ did you remove the nouveau driver ? | |
| 12:07:32 | sean-k-mooney | echo 06:00.0 | sudo tee /sys/bus/pci/drivers/nvidia/unbind | |
| 12:07:50 | sean-k-mooney | echo 06:00.0 | sudo tee /sys/bus/pci/drivers/nvidia_vgpu_vfio/bind | |
| 12:07:53 | pvc_ | [root@overcloud-novacompute-0 nova]# lsmod | grep nou [root@overcloud-novacompute-0 nova]# | |
| 12:07:56 | pvc_ | yes bauzas | |
| 12:08:48 | pvc_ | tee: /sys/bus/pci/drivers/nvidia/unbind: No such device | |
| 12:09:00 | pvc_ | I install this driver | |
| 12:09:09 | pvc_ | NVIDIA-Linux-x86_64-390.72-vgpu-kvm.run | |
| 12:09:15 | bauzas | I need to drop, planned outage here | |
| 12:10:01 | sean-k-mooney | pvc_: from http://paste.openstack.org/show/732807/ that should have been the driver in use | |
| 12:10:10 | pvc_ | i use this 0000:06:00.0 | |
| 12:10:31 | pvc_ | tee: /sys/bus/pci/drivers/nvidia_vgpu_vfio/bind: No such file or directory | |
| 12:10:43 | pvc_ | it is already unbind | |
| 12:11:04 | pvc_ | no nvidia_vgpu_vfio on drivers | |
| 12:11:08 | pvc_ | just nvidia | |
| 12:14:16 | sean-k-mooney | pvc_: this is the latest verion of the nvdia vgpu user guide https://docs.nvidia.com/grid/5.0/pdf/grid-vgpu-user-guide.pdf i think you need to back through it and section 4.2 specifically | |
| 12:14:33 | pvc_ | sean-k-mooney im using a ubuntu image with img_hide_hypervisor_id='true' | |
| 12:15:13 | sean-k-mooney | pvc_: i asked thi earliar but is the compute node a phyical server or a vm | |
| 12:15:34 | pvc_ | compute node is a physical server | |
| 12:15:42 | pvc_ | on docs it said the grid driver | |
| 12:15:48 | pvc_ | but this is the driver i installed | |
| 12:16:01 | pvc_ | installed NVIDIA-Linux-x86_64-390.72-vgpu-kvm.run | |
| 12:16:10 | pvc_ | i have this grid driver NVIDIA-Linux-x86_64-390.75-grid.run | |
| 12:17:03 | sean-k-mooney | pvc_: oh ok i think i understand the issue then | |
| 12:17:12 | sean-k-mooney | you install the guest driver on the host | |
| 12:17:25 | pvc_ | yes sean-k-mooney | |
| 12:17:25 | pvc_ | to enable this | |
| 12:17:31 | pvc_ | /sys/class/mdev_bus/*/mdev_supported_types | |
| 12:18:04 | pvc_ | i install the driver on my compute node ( baremetal server ) im using a tripleo-deployment | |
| 12:22:26 | aperevalov | hello, do nova or neutron has functional test for direct (SR-IOV) port (something like tempest test)? | |
| 12:22:26 | pvc_ | sean-k-mooney what will i do then? | |
| 12:23:37 | sean-k-mooney | aperevalov: i dont belive so in upstream tempest. neutron may have fullstack test but ingerneral our sriov testing is limited | |