bug#64073: libvirtd requires restart to function

[Christian Miller via Bug reports for GNU Guix <bug-guix@gnu.org>]

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Hi,

there is not an error message upon starting it but by stopping it:
Jun 14 23:52:18 localhost shepherd[1]: Stopping service libvirtd... 
Jun 14 23:52:18 localhost libvirtd: 157: error : virGDBusGetSystemBus:99 : internal error: Unable to get system bus connection: Could not connect: No such file or directory 

I have added the command output of "grep -i libvirt /var/log/messages" as attachment.

NOTE: That permission denied error on the ISO is happening since I copied /etc/libvirt from my old system.  I have 10+ VMs and thought this works as well as of re importing every vm.

PS:
I wanted to create a VM to not taint logs but since I upgraded the VM I just have a black screen.  It was a Guix VM installed through the installer with GNOME.  I ran guix pull and added spice, libvirt and virtlog to the config.  After guix system reconfigure config.scm I know have a black screen upon logging in to the system.  This was only after reconfiguring the system.  Before it worked normally.  I used the ISO that reports a permission denied error in the logs I attached.  GDM works fine but after logging it is just a black screen.  Also my mouse cursor changes from a arrow pointer to the default cross cursor from x11.  I guess something is broken on latest?

Best Regards
Christian Miller

[-- Attachment #2: log.txt --]
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Jun 12 16:20:35 localhost vmunix: [    1.669057] shepherd[1]: Starting service libvirtd...
Jun 12 16:20:35 localhost vmunix: [    1.690558] shepherd[1]: Service libvirtd started.
Jun 12 16:20:35 localhost vmunix: [    1.696205] shepherd[1]: Service libvirtd running with value 155.
Jun 12 16:20:35 localhost vmunix: [    1.696425] shepherd[1]: Service libvirtd has been started.
Jun 13 11:38:06 localhost vmunix: [    1.687605] shepherd[1]: Starting service libvirtd...
Jun 13 11:38:06 localhost vmunix: [    1.708965] shepherd[1]: Service libvirtd started.
Jun 13 11:38:06 localhost vmunix: [    1.714310] shepherd[1]: Service libvirtd running with value 155.
Jun 13 11:38:06 localhost vmunix: [    1.714578] shepherd[1]: Service libvirtd has been started.
Jun 13 17:42:57 localhost shepherd[1]: Stopping service libvirtd... 
Jun 13 17:42:57 localhost libvirtd: 155: error : virGDBusGetSystemBus:99 : internal error: Unable to get system bus connection: Could not connect: No such file or directory 
Jun 13 17:42:57 localhost shepherd[1]: Service libvirtd stopped. 
Jun 13 17:42:57 localhost shepherd[1]: Service libvirtd is now stopped. 
Jun 13 17:42:57 localhost shepherd[1]: Starting service libvirtd... 
Jun 13 17:42:57 localhost shepherd[1]: Service libvirtd has been started. 
Jun 13 17:42:57 localhost shepherd[1]: Service libvirtd started. 
Jun 13 17:42:57 localhost shepherd[1]: Service libvirtd running with value 9832. 
Jun 13 17:42:57 localhost dnsmasq[361]: read /var/lib/libvirt/dnsmasq/network.addnhosts - 0 names
Jun 13 17:42:57 localhost dnsmasq-dhcp[361]: read /var/lib/libvirt/dnsmasq/network.hostsfile
Jun 14 05:10:37 localhost shepherd[1]: Respawning libvirtd. 
Jun 14 05:10:37 localhost shepherd[1]: Starting service libvirtd... 
Jun 14 05:10:37 localhost shepherd[1]: Service libvirtd started. 
Jun 14 05:10:37 localhost shepherd[1]: Service libvirtd running with value 27278. 
Jun 14 05:10:37 localhost shepherd[1]: Service libvirtd has been started. 
Jun 14 16:00:12 localhost vmunix: [    1.662704] shepherd[1]: Starting service libvirtd...
Jun 14 16:00:12 localhost vmunix: [    1.684551] shepherd[1]: Service libvirtd started.
Jun 14 16:00:12 localhost vmunix: [    1.689707] shepherd[1]: Service libvirtd running with value 159.
Jun 14 16:00:12 localhost vmunix: [    1.689941] shepherd[1]: Service libvirtd has been started.
Jun 14 22:01:48 localhost vmunix: [    1.672804] shepherd[1]: Starting service libvirtd...
Jun 14 22:01:48 localhost vmunix: [    1.694130] shepherd[1]: Service libvirtd started.
Jun 14 22:01:48 localhost vmunix: [    1.699300] shepherd[1]: Service libvirtd running with value 158.
Jun 14 22:01:48 localhost vmunix: [    1.699497] shepherd[1]: Service libvirtd has been started.
Jun 14 22:31:32 localhost vmunix: [    1.748114] shepherd[1]: Starting service libvirtd...
Jun 14 22:31:32 localhost vmunix: [    1.769690] shepherd[1]: Service libvirtd started.
Jun 14 22:31:32 localhost vmunix: [    1.774882] shepherd[1]: Service libvirtd running with value 157.
Jun 14 22:31:32 localhost vmunix: [    1.775099] shepherd[1]: Service libvirtd has been started.
Jun 14 23:52:18 localhost shepherd[1]: Stopping service libvirtd... 
Jun 14 23:52:18 localhost libvirtd: 157: error : virGDBusGetSystemBus:99 : internal error: Unable to get system bus connection: Could not connect: No such file or directory 
Jun 14 23:52:18 localhost shepherd[1]: Service libvirtd stopped. 
Jun 14 23:52:18 localhost shepherd[1]: Service libvirtd is now stopped. 
Jun 14 23:52:18 localhost shepherd[1]: Starting service libvirtd... 
Jun 14 23:52:18 localhost shepherd[1]: Service libvirtd has been started. 
Jun 14 23:52:18 localhost shepherd[1]: Service libvirtd started. 
Jun 14 23:52:18 localhost shepherd[1]: Service libvirtd running with value 6177. 
Jun 14 23:52:18 localhost dnsmasq[362]: read /var/lib/libvirt/dnsmasq/network.addnhosts - 0 names
Jun 14 23:52:18 localhost dnsmasq-dhcp[362]: read /var/lib/libvirt/dnsmasq/network.hostsfile
Jun 15 04:39:36 localhost shepherd[1]: Respawning libvirtd. 
Jun 15 04:39:36 localhost shepherd[1]: Starting service libvirtd... 
Jun 15 04:39:36 localhost shepherd[1]: Service libvirtd started. 
Jun 15 04:39:36 localhost shepherd[1]: Service libvirtd running with value 14395. 
Jun 15 04:39:36 localhost shepherd[1]: Service libvirtd has been started. 
Jun 15 16:02:13 localhost vmunix: [    1.682893] shepherd[1]: Starting service libvirtd...
Jun 15 16:02:13 localhost vmunix: [    1.704532] shepherd[1]: Service libvirtd started.
Jun 15 16:02:13 localhost vmunix: [    1.709753] shepherd[1]: Service libvirtd running with value 157.
Jun 15 16:02:13 localhost vmunix: [    1.710035] shepherd[1]: Service libvirtd has been started.
Jun 16 15:28:56 localhost vmunix: [    1.687354] shepherd[1]: Starting service libvirtd...
Jun 16 15:28:56 localhost vmunix: [    1.709063] shepherd[1]: Service libvirtd started.
Jun 16 15:28:56 localhost vmunix: [    1.714333] shepherd[1]: Service libvirtd running with value 158.
Jun 16 15:28:56 localhost vmunix: [    1.714565] shepherd[1]: Service libvirtd has been started.
Jun 16 20:20:21 localhost libvirtd: 168: error : virGDBusGetSystemBus:99 : internal error: Unable to get system bus connection: Could not connect: No such file or directory 
Jun 16 20:20:21 localhost libvirtd: 158: error : virNetSocketReadWire:1791 : End of file while reading data: Input/output error 
Jun 16 20:22:51 localhost shepherd[1]: Stopping service libvirtd... 
Jun 16 20:22:51 localhost libvirtd: 158: error : virGDBusGetSystemBus:99 : internal error: Unable to get system bus connection: Could not connect: No such file or directory 
Jun 16 20:22:51 localhost shepherd[1]: Service libvirtd stopped. 
Jun 16 20:22:51 localhost shepherd[1]: Service libvirtd is now stopped. 
Jun 16 20:22:51 localhost shepherd[1]: Starting service libvirtd... 
Jun 16 20:22:51 localhost shepherd[1]: Service libvirtd has been started. 
Jun 16 20:22:51 localhost shepherd[1]: Service libvirtd started. 
Jun 16 20:22:51 localhost shepherd[1]: Service libvirtd running with value 6718. 
Jun 16 20:22:51 localhost dnsmasq[361]: read /var/lib/libvirt/dnsmasq/network.addnhosts - 0 names
Jun 16 20:22:51 localhost dnsmasq-dhcp[361]: read /var/lib/libvirt/dnsmasq/network.hostsfile
Jun 16 20:28:38 localhost libvirtd: 7721: info : libvirt version: 8.6.0 
Jun 16 20:28:38 localhost libvirtd: 7721: info : hostname: gnu 
Jun 16 20:28:38 localhost libvirtd: 7721: error : qemuMonitorIORead:456 : Unable to read from monitor: Connection reset by peer 
Jun 16 20:28:38 localhost libvirtd: 7721: error : qemuProcessReportLogError:2026 : internal error: qemu unexpectedly closed the monitor: 2023-06-16T18:28:38.579248Z qemu-system-x86_64: -blockdev {"driver":"file","filename":"/home/cm/Downloads/7hcg4b2sh2yq0mzzinps4x5wm5x17bl3-image.iso","node-name":"libvirt-1-storage","auto-read-only":true,"discard":"unmap"}: Could not open '/home/cm/Downloads/7hcg4b2sh2yq0mzzinps4x5wm5x17bl3-image.iso': Permission denied 
Jun 16 20:28:38 localhost libvirtd: 6723: error : qemuProcessReportLogError:2026 : internal error: process exited while connecting to monitor: 2023-06-16T18:28:38.579248Z qemu-system-x86_64: -blockdev {"driver":"file","filename":"/home/cm/Downloads/7hcg4b2sh2yq0mzzinps4x5wm5x17bl3-image.iso","node-name":"libvirt-1-storage","auto-read-only":true,"discard":"unmap"}: Could not open '/home/cm/Downloads/7hcg4b2sh2yq0mzzinps4x5wm5x17bl3-image.iso': Permission denied 
Jun 16 20:29:56 localhost libvirtd: 6722: warning : virStorageBackendVolOpen:1619 : ignoring FIFO '/tmp/polybar_mqueue.718' 
Jun 16 20:48:58 localhost libvirtd: 6723: warning : virStorageBackendVolOpen:1619 : ignoring FIFO '/tmp/polybar_mqueue.718' 
Jun 16 22:19:17 localhost shepherd[1]: Stopping service libvirtd... 
Jun 16 22:19:17 localhost shepherd[1]: Service libvirtd stopped. 
Jun 16 22:19:17 localhost shepherd[1]: Service libvirtd is now stopped. 
Jun 16 22:19:17 localhost shepherd[1]: Starting service libvirtd... 
Jun 16 22:19:17 localhost shepherd[1]: Service libvirtd has been started. 
Jun 16 22:19:17 localhost shepherd[1]: Service libvirtd started. 
Jun 16 22:19:17 localhost shepherd[1]: Service libvirtd running with value 15328. 
Jun 16 22:19:17 localhost dnsmasq[361]: read /var/lib/libvirt/dnsmasq/network.addnhosts - 0 names
Jun 16 22:19:17 localhost dnsmasq-dhcp[361]: read /var/lib/libvirt/dnsmasq/network.hostsfile
Jun 16 22:19:17 localhost libvirtd: 15340: info : libvirt version: 8.6.0 
Jun 16 22:19:17 localhost libvirtd: 15340: info : hostname: gnu 
Jun 16 22:19:17 localhost libvirtd: 15340: warning : virStorageBackendVolOpen:1619 : ignoring FIFO '/tmp/polybar_mqueue.718' 
Jun 16 22:19:17 localhost libvirtd: 15340: warning : virStorageBackendVolOpen:1619 : ignoring FIFO '/tmp/polybar_mqueue.14245' 
Jun 16 22:19:21 localhost libvirtd: 15332: warning : virStorageBackendVolOpen:1619 : ignoring FIFO '/tmp/polybar_mqueue.718' 
Jun 16 22:19:21 localhost libvirtd: 15332: warning : virStorageBackendVolOpen:1619 : ignoring FIFO '/tmp/polybar_mqueue.14245' 
Jun 16 22:23:14 localhost shepherd[1]: Respawning libvirtd. 
Jun 16 22:23:14 localhost shepherd[1]: Starting service libvirtd... 
Jun 16 22:23:14 localhost shepherd[1]: Service libvirtd started. 
Jun 16 22:23:14 localhost shepherd[1]: Service libvirtd running with value 15956. 
Jun 16 22:23:14 localhost shepherd[1]: Service libvirtd has been started. 
Jun 16 22:23:46 localhost vmunix: [    1.711901] shepherd[1]: Starting service libvirtd...
Jun 16 22:23:46 localhost vmunix: [    1.732802] shepherd[1]: Service libvirtd started.
Jun 16 22:23:46 localhost vmunix: [    1.738023] shepherd[1]: Service libvirtd running with value 158.
Jun 16 22:23:46 localhost vmunix: [    1.738233] shepherd[1]: Service libvirtd has been started.