Arch Linux

reggler

Member

Registered: 2019-08-23

Posts: 23

Unable to create bridge virbr0

Hi,

I installed Virtual Machine Manager and when trying to setup & install the first guest (Manjaro) under QEMU/KVM, it was complaining about the inability to create a network 'default'. When I go into Edit/Connection Details/ tab Virtual Networks I have deleted the initial 'default' connection but it won't let me add a new NAT mode connection. As when I hit Finish in the Create a new virtual network dialog, It gives me an error "Error creating network: Unable to create bridge virbr0: Package not installed".
I also tried this:

$ sudo systemctl status libvirtd
● libvirtd.service - Virtualization daemon
     Loaded: loaded (/usr/lib/systemd/system/libvirtd.service; enabled; vendor preset: disabled)
     Active: active (running) since Sat 2020-01-18 08:02:32 PST; 2min 18s ago
TriggeredBy: ● libvirtd-ro.socket
             ● libvirtd-admin.socket
             ● libvirtd.socket
       Docs: man:libvirtd(8)
             https://libvirt.org
   Main PID: 38664 (libvirtd)
      Tasks: 17 (limit: 32768)
     Memory: 41.4M
     CGroup: /system.slice/libvirtd.service
             └─38664 /usr/bin/libvirtd

Jan 18 08:02:32 DesktopRon systemd[1]: Started Virtualization daemon.
Jan 18 08:02:32 DesktopRon libvirtd[38664]: libvirt version: 5.10.0
Jan 18 08:02:32 DesktopRon libvirtd[38664]: hostname: DesktopRon
Jan 18 08:02:32 DesktopRon libvirtd[38664]: Libvirt doesn't support VirtualBox API version 6001002
Jan 18 08:04:02 DesktopRon libvirtd[38664]: operation failed: pool 'default' already exists with uuid 9a6b2816-1e2a-4883-8278-3316a2f4e272
Jan 18 08:04:02 DesktopRon libvirtd[38664]: operation failed: pool 'default' already exists with uuid 9a6b2816-1e2a-4883-8278-3316a2f4e272
Jan 18 08:04:02 DesktopRon libvirtd[38664]: this function is not supported by the connection driver: virConnectGetAllDomainStats
Jan 18 08:04:40 DesktopRon libvirtd[38664]: Unable to create bridge virbr0: Package not installed

I'm not sure why it would still say "operation failed: pool 'default' already exists with uuid 9a6b2816-1e2a-4883-8278-3316a2f4e272" as I have deleted connection 'default' using the Connection Details Dialog from Virtual Box Manager. Also, after stopping & restarting the deamon(libvirtd), I don't get any errors.

Can anyone help me to get this network connection up and running?

loqs

Member

Registered: 2014-03-06

Posts: 18,268

Re: Unable to create bridge virbr0

Have you installed the optional dependencies of libvirt mentioned in Libvirt#Server?

WilliamMartens

Banned

Registered: 2020-07-18

Posts: 5

Re: Unable to create bridge virbr0

Hello! I had the EXACT SAME problem today!
At first, I of course tried basic things  that most of the time fixes it, but it didn't:
stop and restarted the libvirtd services. Which didn't work.

And, I should add that I do not know if this solved it. So this may or may not be a solution.
But - in hope this could be useful for you, or someone else having the same issue -

I'm posting all my history of what I can remember doing, as non-root.

After this (in my case) it begun working, surprisingly:

sudo pacman -Syyu
sudo pacman -R dnsmasq ebtables
# rebooted #
sudo pacman -Syyu
sudo pacman -Syyud ebtables dnsmasq
sudo pacman -S linux-headers
sudo virt-manager

Hope this can help anyone!!
//Will.

GaKu999

Member

From: US/Eastern

Registered: 2020-06-21

Posts: 696

Re: Unable to create bridge virbr0

sudo pacman -Syyu
sudo pacman -R dnsmasq ebtables
# rebooted #
sudo pacman -Syyu
sudo pacman -Syyud ebtables dnsmasq
sudo pacman -S linux-headers
sudo virt-manager

Do you always use pacman -Syyu?
Please don’t as it causes unnecessary load to the servers, also don’t necrobump a slightly old thread like that...

Last edited by GaKu999 (2020-07-20 07:03:33)

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