Truenas Scales VM failed to start

olivierlambert

It means the PCI device you are trying to pass to this VM is already used, either by another VM, or by the Dom0 itself.

jag5cof

@olivierlambert what is the fix action and how

olivierlambert

I can't guess the device you are trying to passthrough and how/if it's used by another VM or the dom0.

The fix is to be sure no other VM is using this device (including the dom0). If you added a passthrough device, you know which one you added, and nobody else can guess it

jag5cof

@olivierlambert I know the other vm which are using the passthough. So do you know I can remove the passthough from the others vms

AtaxyaNetwork

@jag5cof I imagine it's something like:

List the param of your VM with xe vm-param-list uuid=<uuid>
Find the line like other-config:pci=0/0000:04:01.0
Then you can remove with xe vm-param-remove other-config:pci=0/0000:04:01.0 uuid=<uuid>

jag5cof

@AtaxyaNetwork ok and thanks

jag5cof

@AtaxyaNetwork I'm gettin this error when I run this command

Required parameter not found: param-name
xe vm-param-remove other-config:pci=0/0000:03:00.0 uuid=vm#

I add the correct pci id and vm uuid

AtaxyaNetwork

@jag5cof Maybe xe vm-param-remove param-name=other-config param-key=pci=0/0000:03:00.0 uuid=<uuid> ?

jag5cof

@AtaxyaNetwork I got this error when I ran your cmd - Key pci=0/0000:03:00.0 is not in map

I aslo ran xl pci-assignable-list
0000:03:00.0

AtaxyaNetwork

@jag5cof I just discussed this with @olivierlambert, the right syntax is:
xe vm-param-remove param-name=other-config param-key=pci uuid=<VM UUID>

He will add the procedure to delete PCI passthrough in the docs

olivierlambert

I updated the doc, it's now available: https://docs.xcp-ng.org/compute/#detaching-a-pci-device

jag5cof

@AtaxyaNetwork I appreciate you working with me on this. It is a learn experience.

jag5cof

@olivierlambert I'm still getting this error - Key pci is not in map

olivierlambert

Check if you have the PCI parameter enabled on the VM first:

xe vm-param-list uuid=<VM UUID>

jag5cof

@olivierlambert What line am I'm looking for on the vm after the
cmd is run

olivierlambert

The other-config line Paste it here

jag5cof

@olivierlambert I'm not sure what you ar asking?

olivierlambert

Paste the output of xe vm-param-list uuid=<VM UUID> in here.

jag5cof

@olivierlambert Do you think it would be easier to re-install truenas and not applied passthough

olivierlambert

No. Just paste the result so we can see the content of the other-config field.