Public bug reported:
focal (upgraded from eoan)
libvirt 6.0.0-0ubuntu1
It seems that the default qemu libvirt changed from qemu:///system to
qemu:///session, or something else is going on.
I was debugging multipass's libvirt backend, and this started happening with
focal:
"""
andreas@nsnx:~$ sudo multipass set local.driver=libvirt
[sudo] password for andreas:
andreas@nsnx:~$ virsh list --all
Id Name State
--------------------
andreas@nsnx:~$ multipass delete -p bionic-nvdimm
andreas@nsnx:~$ multipass launch -c 2 -m 2G -n bionic-nvdimm --cloud-init
~/cloud-init-proxy daily:bionic
Starting bionic-nvdimm |-i\|/-l\|t-\|/-\
Launched: bionic-nvdimm
andreas@nsnx:~$ virsh list --all
Id Name State
--------------------
andreas@nsnx:~$
"""
I expected to see my VMs (all my existing ones plus the new one) listed by
virsh. Further debugging showed that virsh, without an explicit -c option, was
connecting to qemu:///session:
$ LIBVIRT_DEBUG=1 virsh list 2>&1 | grep Auto-probed
2020-02-03 15:28:49.982+0000: 710151: debug : doRemoteOpen:1356 : Auto-probed
URI is qemu:///session
Which indeed returns an empty list.
If I specify -c qemu:///system, then I see my VMs again, including the one just
launched by multipass:
$ virsh -c qemu:///system list --all
Id Name State
-----------------------------------
3 bionic-nvdimm running
- focal-containerd shut off
- trusty-amd64-ua shut off
- trusty-desktop shut off
- trusty-i386-ua shut off
- trusty-ua shut off
I asked a colleague who is on eoan to check, and the default there seems to be
qemu:///system:
2020-02-03 15:30:13.229+0000: 7277: debug : virConnectGetDefaultURI:786 : Using
LIBVIRT_DEFAULT_URI 'qemu:///system'
2020-02-03 15:30:13.229+0000: 7277: debug : virConnectOpenInternal:918 : Split
"qemu:///system" to URI components:
scheme qemu
2020-02-03 15:30:13.229+0000: 7277: debug : virConnectOpenInternal:1012 :
Matching any URI scheme for 'qemu'
2020-02-03 15:30:13.229+0000: 7277: debug : doRemoteOpen:948 : proceeding with
name = qemu:///system
2020-02-03 15:30:13.231+0000: 7277: debug : doRemoteOpen:1210 : Trying to open
URI qemu:///system
** Affects: libvirt (Ubuntu)
Importance: Undecided
Status: New
** Tags: champagne
** Tags removed: champaigne
** Tags added: champagne
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https://bugs.launchpad.net/bugs/1861693
Title:
Default URI changed to qemu:///session?
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