libvirt VM

[JenJen]

Hello,

I have a problem with my VM. I created a VM and try to pass USB but I break something :(
Now I can't launch my existing VM and I can't create another VM there is always the same error : failed to connect to libvirt
I reboot and there is the same error.

I try the command: service middlewared status
libvirt: XML-RPC error : Failed to connect socket to '/run/truenas_libvirt/libvirt-sock': No such file or directory

Another command:
truenas# ls -l /var/run/libvirt/libvirt-sock
srw-rw-rw- 1 root root 0 Jul 8 21:51 /var/run/libvirt/libvirt-sock

I don't know what I need to do. I need to create a symbolic link into /run/truenas_libvirt/?

JenJen

 

[morganL]

Please read "forum Rules" and provide the technical detail.

Are you trying to use libvirt directly (not supported) or going through the TrueNAS API or UI?

 

[JenJen]

Hello Morgan,

For the technical detail:
Truenas version : TrueNAS-SCALE-21.06-BETA.1

Motherboard : asrock H570m-ITX/AC
CPU : Core i3 10100
RAM : 16Go
Disk : 4*4To in raidZ2 + 250Go NVME disk cache

I want to port my automation from raspberry to Truenas in VM. I installed a debian VM. Everything was ok, I can run the VM without problem. I try to pass my ZWave stick and Zigbee stick but I didn't arrived to do that.
I tried to use lsusb but the program isn't intalled in truenas.

I tried to use : virsh nodedev-list but I had this error:
error: failed to connect to the hypervisor
error: Failed to connect socket to '/var/run/libvirt/libvirt-sock': Connection refused

So I enter theses commands :
systemctl unmask libvirtd.socket
systemctl restart libvirtd.service

So for your question I tried to use libvirt directly.

Jenjen

 

[silverback]

I tried to use : virsh nodedev-list but I had this error:
error: failed to connect to the hypervisor
error: Failed to connect socket to '/var/run/libvirt/libvirt-sock': Connection refused


Jenjen

Code:

virsh -c "qemu+unix:///system?socket=/run/truenas_libvirt/libvirt-sock" nodedev-list

This can get you to 'virsh', but I have not been able to get 'virsh edit' to stick.

 

[morganL]

I want to port my automation from raspberry to Truenas in VM. I installed a debian VM. Everything was ok, I can run the VM without problem. I try to pass my ZWave stick and Zigbee stick but I didn't arrived to do that.
I tried to use lsusb but the program isn't intalled in truenas.

So what you are trying to do nis pass a specific USB device to a specific VM?

It's not supported yet...but I think you can pass a specific USB controller via PCIe to a specific VM.

There is an accepted suggestion for a future software release:

https://jira.ixsystems.com/browse/NAS-108800?jql=text%20~%20%22SCALE%20usb%22

 

[JenJen]

Thank you for your answers.

virsh -c "qemu+unix:///system?socket=/run/truenas_libvirt/libvirt-sock" nodedev-list

The problem is "/run/truenas_libvirt/libvirt-sock" doesn't exist anymore in my truenas (I think I delete it, but I don't know how :s). I don't know how to get it back... I think it will solve my problem of "failed to connect to libvirt" if I recover the "libvirt-sock".

Do you think if I copy "/var/run/libvirt/libvirt-sock" into "/run/truenas_libvirt/" it will work?

It's not supported yet...but I think you can pass a specific USB controller via PCIe to a specific VM.

I already tried but to find which PCI correspond to which USB controller... It's a bit difficult ^^. So I try another way.

There is an accepted suggestion for a future software release:
https://jira.ixsystems.com/browse/NAS-108800?jql=text ~ "SCALE usb"

I will wait so.

JenJen

 

[silverback]

The problem is "/run/truenas_libvirt/libvirt-sock" doesn't exist anymore in my truenas (I think I delete it, but I don't know how :s). I don't know how to get it back... I think it will solve my problem of "failed to connect to libvirt" if I recover the "libvirt-sock".

Do you think if I copy "/var/run/libvirt/libvirt-sock" into "/run/truenas_libvirt/" it will work?



JenJen

Yes, unfortunately the only way I know to get libvirt back is to revert to a previous saved configuration or boot image.

 

[JenJen]

Yes, unfortunately the only way I know to get libvirt back is to revert to a previous saved configuration or boot image.

Ok I save the configuration after this mistake... I prefer to avoid to reinstall everything :(

Maybe the "/run/truenas_libvirt/" is a symbolic link to "/var/run/libvirt/".
I don't know if you can verify if it's a symbolic link or not.

 

[JenJen]

Hello,

I tried to install Truenas scale in virtualbox, but I had black screen. I use the iso file but it seems there is problem with it.

I wanted to compare a truenas where VM works and mine.
Somebody can execute the command ls -la in "/run/truenas_libvirt/" and "/var/run/libvirt/" and "/run/libvirt" please?

The dir on my truenas "/run/truenas_libvirt/" is empty...
"/var/run/libvirt/":

Code:

drwxr-xr-x 2 root root  40 Jul  8 21:51 hostdevmgr
drwx------ 2 root root  60 Jul 16 13:48 interface
srw-rw-rw- 1 root root   0 Jul  8 21:51 libvirt-sock
drwxr-xr-x 2 root root  80 Jul 16 13:48 lxc
drwxr-xr-x 2 root root 100 Jul 16 13:48 network
drwx------ 2 root root  60 Jul 16 13:48 nodedev
drwx------ 2 root root  60 Jul 16 13:48 nwfilter
drwx------ 2 root root  40 Jul  8 21:51 nwfilter-binding
drwxr-xr-x 4 root root 120 Jul 16 13:48 qemu
drwx------ 2 root root  60 Jul 16 13:48 secrets
drwxr-xr-x 2 root root  80 Jul 16 13:48 storage
srw------- 1 root root   0 Jul  8 21:51 virtlockd-admin-sock
srw------- 1 root root   0 Jul  8 21:51 virtlockd-sock
srw------- 1 root root   0 Jul  8 21:51 virtlogd-admin-sock
srw------- 1 root root   0 Jul  8 21:51 virtlogd-sock

I notice I have another dir with libvirt "/run/libvirt"... Maybe I need to ask a developer to help me?
"/run/libvirt":

Code:

drwxr-xr-x 2 root root  40 Jul  8 21:51 hostdevmgr
drwx------ 2 root root  60 Jul 16 13:48 interface
srw-rw-rw- 1 root root   0 Jul  8 21:51 libvirt-sock
drwxr-xr-x 2 root root  80 Jul 16 13:48 lxc
drwxr-xr-x 2 root root 100 Jul 16 13:48 network
drwx------ 2 root root  60 Jul 16 13:48 nodedev
drwx------ 2 root root  60 Jul 16 13:48 nwfilter
drwx------ 2 root root  40 Jul  8 21:51 nwfilter-binding
drwxr-xr-x 4 root root 120 Jul 16 13:48 qemu
drwx------ 2 root root  60 Jul 16 13:48 secrets
drwxr-xr-x 2 root root  80 Jul 16 13:48 storage
srw------- 1 root root   0 Jul  8 21:51 virtlockd-admin-sock
srw------- 1 root root   0 Jul  8 21:51 virtlockd-sock
srw------- 1 root root   0 Jul  8 21:51 virtlogd-admin-sock
srw------- 1 root root   0 Jul  8 21:51 virtlogd-sock

JenJen