Hi UnRaiders,

I'm getting to the end of my tether with stability of UnRAID, please help or I go back to Windows. I'm having a real issue with GPU passthrough to a Win10 VM. The IOMMU groups and split up quite nicely with my mobo, I dumped my own vbios and I'm referencing that in the VM settings. But when I start the VM up it doesn't show anything and I see a whole lot of this is the VM log:

2018-05-24T13:17:35.701483Z qemu-system-x86_64: vfio_region_write(0000:01:00.0:region0+0xf9788d8, 0x0,8) failed: Device or resource busy

Seems like there is another driver in the host claiming resources or something, but can't manage to fix it. 

Someone please help?

Thanks in advance

serverbread-diagnostics-20180524-1424.zip

 

 

 

 

Same error here on a Threadripper 1950x a ASRock X399 Taichi board and Nvidia GTX1080TI and Unraid 6.7.2

I'm having the same error myself, i've tried all kinds of fixes and watched every video SpaceInvaderOne has made about Nvidia GPU passthrough and still no display. I just need it to work temporarily until i can get hold of a RTX 3080 at a non extortionate rate.

 

This is the error code in the log (Log Screenshot Attached)

 

2021-04-05T18:23:12.073130Z qemu-system-x86_64: vfio_region_write(0000:2b:00.0:region3+0x111d780, 0xccff0000ccff,8) failed: Device or resource busy

2021-04-05T18:23:12.074649Z qemu-system-x86_64: vfio_region_write(0000:2b:00.0:region3+0x1121708, 0x0,8) failed: Device or resource busy

 

Unraid 6.9.1

Motherboard: MSI Tomahawk b550 (MS-7c91) Version 2.

CPU: AMD Ryzen 5600x 6-core.

GPU: Nvidia GeForce GTX 650 ti.

RAM: 16gb DDR4 3200mhz.

Latest Bios Installed

I've tried both types of vbios (Hex editing and Script in unraid)

 

All IOMMU Groups passed through successfully and i can boot into GUI Mode! 

 

IOMMU groups enabled in bios as well as VM's

I managed to fix the issue by deleting the VM's log files. It seems like they cannot be written to after I forcefully stopped the VM.

 

I deleted:

/var/log/libvirt/qemu/LOG_NAME

 

I can't find that file to delete it....

 

2 hours ago, Joseph Higgins said:

I can't find that file to delete it....

 

You will have to do from the command line

 

root@computenode:/var/log/libvirt/qemu# ls
HA.log  Unraid-VM.log
root@computenode:/var/log/libvirt/qemu# 

 

I used krusader to start with since I don't know the unix command lines at all. I did not think I saw it. Still can't find it.

 

My issue was the Nvidia GPU I was attempting to passthrough. I was able to follow the instructions for VM device passthrough in the official documentation. The step I was missing was disabling the GPU in the Bios of the motherboard. It was binding to it on load of Unraid, then I could never pass it through successfully. I was able to play Harry Potter on my 2080ti passed through, although not at the best frame rates. Now I am wondering if I should just move my zzzdarr apps back into windows so that plex has access to the video card again...