Public bug reported:
$ lxc launch ubuntu-daily:plucky pprc
$ lxc shell pprc
# apt update
# apt install libvirt-daemon-driver-qemu
[...]
Setting up libvirt-daemon-driver-qemu (11.0.0-2ubuntu6) ...
useradd warning: libvirt-qemu's uid 64055 is greater than SYS_UID_MAX 999
fatal: The group `libvirt' does not exist.
Enabling libvirt default network
ln: failed to create symbolic link '/etc/libvirt/qemu/networks/autostart/': No
such file or directory
dpkg: error processing package libvirt-daemon-driver-qemu (--configure):
installed libvirt-daemon-driver-qemu package post-installation script
subprocess returned error exit status 1
dmesg: read kernel buffer failed: Operation not permitted
[...]
Errors were encountered while processing:
libvirt-daemon-driver-qemu
needrestart is being skipped since dpkg has failed
Error: Sub-process /usr/bin/dpkg returned an error code (1)
=> The '/etc/libvirt/qemu/networks/autostart/' is assumed to exist by
libvirt-daemon-driver-qemu.postinst but it's not there. It's supposed to
be installed by d/libvirt-daemon-driver-network.dirs.
# ll /etc/libvirt/qemu/networks/autostart
ls: cannot access '/etc/libvirt/qemu/networks/autostart': No such file or
directory
# apt install libvirt-daemon-driver-network
[...]
# ll /etc/libvirt/qemu/networks/autostart
total 8
drwxr-xr-x 2 root root 4096 Apr 16 08:12 ./
drwxr-xr-x 3 root root 4096 Apr 16 08:12 ../
lrwxrwxrwx 1 root root 38 Apr 16 08:12 default.xml ->
/etc/libvirt/qemu/networks/default.xml ## ATTENTION: This is a broken/dangling
symlink
=> Alright, looking OK. But now there can be another issue when libvirt-
daemon-driver-qemu.postinst tries to assign an alternative IP address
range, because the default 192.168.122.1/24 is already taken, e.g. in
nested environments. We can easily simulate that by assigning the
192.168.122.1 IP to eth0:
# ip addr add 192.168.122.1 dev eth0 ## This would also happen if we're in a
nested environment
# apt purge libvirt-daemon-driver-qemu
# apt install --reinstall libvirt-daemon-driver-qemu
[...]
Setting up libvirt-daemon-driver-qemu (11.0.0-2ubuntu6) ...
useradd warning: libvirt-qemu's uid 64055 is greater than SYS_UID_MAX 999
Default libvirt network on 192.168.122.1/24 already taken
Changing to free 192.168.123.1/24
sed: can't read /etc/libvirt/qemu/networks/default.xml: No such file or
directory
dpkg: error processing package libvirt-daemon-driver-qemu (--configure):
installed libvirt-daemon-driver-qemu package post-installation script
subprocess returned error exit status 2
Processing triggers for man-db (2.13.0-1) ...
Errors were encountered while processing:
libvirt-daemon-driver-qemu
needrestart is being skipped since dpkg has failed
Error: Sub-process /usr/bin/dpkg returned an error code (1)
=> libvirt-daemon-driver-qemu.postinst tries to manipulate
/etc/libvirt/qemu/networks/default.xml (using "sed") which is not there.
The file is created by "d/libvirt-daemon-config-network.postinst" from
the /usr/share/libvirt/networks/default.xml template:
$ apt-file find networks/default.xml
libvirt-daemon-config-network: /usr/share/libvirt/networks/default.xml
# apt install libvirt-daemon-config-network
[...]
Setting up libvirt-daemon-driver-qemu (11.0.0-2ubuntu6) ...
Default libvirt network on 192.168.122.1/24 already taken
Changing to free 192.168.123.1/24
Enabling libvirt default network
[...]
=> Hooray, libvirt-daemon-driver-qemu is now successfully configured!
==== Workaround ====
In the end, the workaround is to "apt install libvirt-daemon-config-
network".
==== Proposed Fix ====
We need to modify libvirt's d/control, adding a "Pre-Depends: libvirt-
daemon-config-network" to the libvirt-daemon-driver-qemu binary. This
will automatically pull in libvirt-daemon-driver-network, creating
"/etc/libvirt/qemu/networks/autostart". It needs to be a Pre-Depends, as
the file "/etc/libvirt/qemu/networks/default.xml" is only created from
the "/usr/share/libvirt/networks/default.xml" template in libvirt-
daemon-config-network.postinst, i.e. after package configuration.
** Affects: libvirt (Ubuntu)
Importance: Undecided
Status: New
** Description changed:
$ lxc launch ubuntu-daily:plucky pprc
$ lxc shell pprc
# apt update
# apt install libvirt-daemon-driver-qemu
[...]
Setting up libvirt-daemon-driver-qemu (11.0.0-2ubuntu6) ...
useradd warning: libvirt-qemu's uid 64055 is greater than SYS_UID_MAX 999
fatal: The group `libvirt' does not exist.
Enabling libvirt default network
ln: failed to create symbolic link '/etc/libvirt/qemu/networks/autostart/':
No such file or directory
dpkg: error processing package libvirt-daemon-driver-qemu (--configure):
- installed libvirt-daemon-driver-qemu package post-installation script
subprocess returned error exit status 1
+ installed libvirt-daemon-driver-qemu package post-installation script
subprocess returned error exit status 1
dmesg: read kernel buffer failed: Operation not permitted
[...]
Errors were encountered while processing:
- libvirt-daemon-driver-qemu
+ libvirt-daemon-driver-qemu
needrestart is being skipped since dpkg has failed
Error: Sub-process /usr/bin/dpkg returned an error code (1)
-
- => The '/etc/libvirt/qemu/networks/autostart/' is assumed to exist by
libvirt-daemon-driver-qemu.postinst but it's not there. It's supposed to be
installed by d/libvirt-daemon-driver-network.dirs.
-
+ => The '/etc/libvirt/qemu/networks/autostart/' is assumed to exist by
+ libvirt-daemon-driver-qemu.postinst but it's not there. It's supposed to
+ be installed by d/libvirt-daemon-driver-network.dirs.
# ll /etc/libvirt/qemu/networks/autostart
ls: cannot access '/etc/libvirt/qemu/networks/autostart': No such file or
directory
# apt install libvirt-daemon-driver-network
[...]
# ll /etc/libvirt/qemu/networks/autostart
total 8
drwxr-xr-x 2 root root 4096 Mar 31 13:54 ./
drwxr-xr-x 3 root root 4096 Apr 16 07:53 ../
-
- => Alright, looking OK. But now there can be another issue when
libvirt-daemon-driver-qemu.postinst tries to assign an alternative IP address
range, because the default 192.168.122.1/24 is already taken, e.g. in nested
environments. We can easily simulate that by assigning the 192.168.122.1 IP to
eth0:
+ => Alright, looking OK. But now there can be another issue when libvirt-
+ daemon-driver-qemu.postinst tries to assign an alternative IP address
+ range, because the default 192.168.122.1/24 is already taken, e.g. in
+ nested environments. We can easily simulate that by assigning the
+ 192.168.122.1 IP to eth0:
# ip addr add 192.168.122.1 dev eth0 ## This would also happen if we're in a
nested environment
# apt purge libvirt-daemon-driver-qemu
# apt install --reinstall libvirt-daemon-driver-qemu
[...]
Setting up libvirt-daemon-driver-qemu (11.0.0-2ubuntu6) ...
useradd warning: libvirt-qemu's uid 64055 is greater than SYS_UID_MAX 999
Default libvirt network on 192.168.122.1/24 already taken
Changing to free 192.168.123.1/24
sed: can't read /etc/libvirt/qemu/networks/default.xml: No such file or
directory
dpkg: error processing package libvirt-daemon-driver-qemu (--configure):
- installed libvirt-daemon-driver-qemu package post-installation script
subprocess returned error exit status 2
+ installed libvirt-daemon-driver-qemu package post-installation script
subprocess returned error exit status 2
Processing triggers for man-db (2.13.0-1) ...
Errors were encountered while processing:
- libvirt-daemon-driver-qemu
+ libvirt-daemon-driver-qemu
needrestart is being skipped since dpkg has failed
Error: Sub-process /usr/bin/dpkg returned an error code (1)
=> libvirt-daemon-driver-qemu.postinst tries to manipulate
/etc/libvirt/qemu/networks/default.xml (using "sed") which is not there.
The file is created by "d/libvirt-daemon-config-network.postinst" from
the /usr/share/libvirt/networks/default.xml template:
$ apt-file find networks/default.xml
libvirt-daemon-config-network: /usr/share/libvirt/networks/default.xml
-
# apt install libvirt-daemon-config-network
[...]
Setting up libvirt-daemon-driver-qemu (11.0.0-2ubuntu6) ...
Default libvirt network on 192.168.122.1/24 already taken
Changing to free 192.168.123.1/24
Enabling libvirt default network
[...]
=> Hooray, libvirt-daemon-driver-qemu is now successfully configured!
-
==== Workaround ====
- In the end, the workaround is to "apt install ilbvirt-daemon-driver-
- qemu".
-
+ In the end, the workaround is to "apt install libvirt-daemon-config-
+ network".
==== Proposed Fix ====
We need to modify libvirt's d/control, adding a "Pre-Depends: libvirt-
daemon-config-network" to the libvirt-daemon-driver-qemu binary. This
will automatically pull in libvirt-daemon-driver-network, creating
"/etc/libvirt/qemu/networks/autostart". It needs to be a Pre-Depends, as
the file "/etc/libvirt/qemu/networks/default.xml" is only created from
the "/usr/share/libvirt/networks/default.xml" template in libvirt-
daemon-config-network.postinst, i.e. after package configuration.
--
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https://bugs.launchpad.net/bugs/2107448
Title:
libvirt-daemon-driver-qemu fails to install (--configure) due to
.postinst issue
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