Restore machine from ZFS

LXD
1

Dear experts,

I would like to restore a LXD VM that cannot be started anymore since I have tried to attach the host machine to Maas as KVM host. I can see ZFS files and a default.img but I cannot start the VM : Error: Failed pre-start check for device "eth0": Network "lxdbr0" unavailable on this server

default/virtual-machines/sonarqube                                13.6M  86.4M     6.83M  legacy
default/virtual-machines/sonarqube.block                          6.04G   425G     6.03G  -

I have tried some technics without any success. Coud you please advice?

Regards,
Ludovic

2

Please can you show the output of lxc warning list and /var/snap/lxd/common/lxd/logs/lxd.log

3 
lxc warning list
+--------------------------------------+-------------------------------------------------+--------+----------+-------+---------+-------------------------------+
|                 UUID                 |                      TYPE                       | STATUS | SEVERITY | COUNT | PROJECT |           LAST SEEN           |
+--------------------------------------+-------------------------------------------------+--------+----------+-------+---------+-------------------------------+
| 0376b95b-cf6d-4f2f-b13e-5478df1b0c0a | Couldn't find the CGroup memory swap accounting | NEW    | LOW      | 79    |         | Oct 10, 2022 at 8:44am (UTC)  |
+--------------------------------------+-------------------------------------------------+--------+----------+-------+---------+-------------------------------+
| 870fdb94-4636-412f-b108-1a870c10a457 | Network unavailable                             | NEW    | HIGH     | 247   | default | Oct 10, 2022 at 12:53pm (UTC) |
+--------------------------------------+-------------------------------------------------+--------+----------+-------+---------+-------------------------------+
| bb1f4633-c95b-4926-8c9c-106def0cf1d9 | Couldn't find the CGroup blkio.weight           | NEW    | LOW      | 79    |         | Oct 10, 2022 at 8:44am (UTC)  |
+--------------------------------------+------------------------

time="2022-10-10T12:54:26Z" level=error msg="Failed initializing network" err="Failed starting: The DNS and DHCP service exited prematurely: Process exited with non-zero value 2 (\"dnsmasq: failed to create listening socket for 172.16.4.1: Address already in use\")" network=lxdbr0 project=default
4

Try killing the running dnsmasq process and see if LXD can start it back up.

5

Great, one step done! I can access to the machine and currently checking content. I will try to backup the machine and restart it from another host.