topics consulted 
lost database after upgrade
lxd.migrate results in no containers
lxd snap version installed: 4.0.9-a29c6f1
Hello,
After upgrade from ubuntu 18 to ubuntu 20, i realised i needed the snap package for my lxc containers.
however my server at the time was not connected to the internet and i was using a local mirror repository.
seeing the error (pink screen) i skipped it and continued the upgrade.
after that i connected my server to the internet and installed the lxd snap package. so far my zpool was mounted in /var/lib/lxd and my containers were mounted in /var/lib/lxd/storage-pools/default/containers/container-name.
I tried to use lxd migrate but it kept giving me errors. the snap.lxd.daemon.service is running but lxc list displays nothing.
I exported my pool lxd_data and imported it in /var/snap/lxd/common/lxd/ ( (sweat and tears )
:~$ df -h
Filesystem Size Used Avail Use% Mounted on
udev 32G 0 32G 0% /dev
tmpfs 6,3G 2,5M 6,3G 1% /run
rpool/ROOT/ubuntu 3,8G 1,9G 2,0G 49% /
tmpfs 32G 0 32G 0% /dev/shm
tmpfs 5,0M 0 5,0M 0% /run/lock
tmpfs 32G 0 32G 0% /sys/fs/cgroup
/dev/sda8 511M 5,0M 507M 1% /boot/efi
rpool/home 43G 41G 2,0G 96% /home
rpool/var/log 2,4G 431M 2,0G 18% /var/log
rpool/var/spool 2,0G 1,2M 2,0G 1% /var/spool
tmpfs 6,3G 0 6,3G 0% /run/user/1006
/dev/loop0 39M 39M 0 100% /snap/snapd/21759
/dev/loop1 64M 64M 0 100% /snap/core20/2318
/dev/loop2 92M 92M 0 100% /snap/lxd/24061
lxd_data/lxd 8,4T 384K 8,4T 1% /var/snap/lxd/common/lxd
lxd_data/eho/containers/Network-fl11-tw1 94G 548M 93G 1% /var/snap/lxd/common/lxd/storage-pools/default/containers/Network-fl11-tw1
lxd_data/eho/containers/VPN-fl11-tw1 94G 547M 93G 1% /var/snap/lxd/common/lxd/storage-pools/default/containers/VPN-fl11-tw1
lxd_data/eho/containers/DATA-LVL1-fl11-tw1 1022G 25G 998G 3% /var/snap/lxd/common/lxd/storage-pools/default/containers/DATA-LVL1-fl11-tw1
lxd_data/eho/containers/DATA-LVL2-fl11-tw1 1023G 337G 687G 33% /var/snap/lxd/common/lxd/storage-pools/default/containers/DATA-LVL2-fl11-tw1
lxd_data/eho/containers/DATA-LVL3-fl11-tw1 1023G 2,6G 1020G 1% /var/snap/lxd/common/lxd/storage-pools/default/containers/DATA-LVL3-fl11-tw1
lxd_data/eho/containers/DATA-LVL4-fl11-tw1 937G 3,2G 934G 1% /var/lib/lxd/storage-pools/default/containers/DATA-LVL4-fl11-tw1
outputs :
:~$ sudo systemctl start lxd
Failed to start lxd.service: Unit lxd.service not found.
:~$ lxc list
+------+-------+------+------+------+-----------+
| NAME | STATE | IPV4 | IPV6 | TYPE | SNAPSHOTS |
+------+-------+------+------+------+-----------+
:~$ sudo lxd.migrate
=> Connecting to source server
error: Unable to connect to the source LXD: Get "http://unix.socket/1.0": dial unix /var/lib/lxd/unix.socket: connect: connection refused
:~$ sudo systemctl start lxd
[sudo] password for ard:
Failed to start lxd.service: Unit lxd.service not found.
:~$ sudo systemctl status snap.lxd.daemon.service
● snap.lxd.daemon.service - Service for snap application lxd.daemon
Loaded: loaded (/etc/systemd/system/snap.lxd.daemon.service; static; vendor preset: enabled)
Active: active (running) since Wed 2024-07-17 11:31:01 CEST; 16s ago
TriggeredBy: ● snap.lxd.daemon.unix.socket
Main PID: 29426 (daemon.start)
Tasks: 0 (limit: 4915)
Memory: 4.8M
CGroup: /system.slice/snap.lxd.daemon.service
‣ 29426 /bin/sh /snap/lxd/24061/commands/daemon.start
juil. 17 11:31:01 srv01-fl11-tw1 lxd.daemon[29577]: - proc_uptime
juil. 17 11:31:01 srv01-fl11-tw1 lxd.daemon[29577]: - shared_pidns
juil. 17 11:31:01 srv01-fl11-tw1 lxd.daemon[29577]: - cpuview_daemon
juil. 17 11:31:01 srv01-fl11-tw1 lxd.daemon[29577]: - loadavg_daemon
juil. 17 11:31:01 srv01-fl11-tw1 lxd.daemon[29577]: - pidfds
juil. 17 11:31:02 srv01-fl11-tw1 lxd.daemon[29426]: => Starting LXD
juil. 17 11:31:02 srv01-fl11-tw1 lxd.daemon[29590]: t=2024-07-17T11:31:02+0200 lvl=warn msg=" - Couldn't find the CGroup blkio.weight, disk priority will be ignored"
juil. 17 11:31:02 srv01-fl11-tw1 lxd.daemon[29590]: t=2024-07-17T11:31:02+0200 lvl=warn msg=" - Couldn't find the CGroup memory swap accounting, swap limits will be ignored"
juil. 17 11:31:09 srv01-fl11-tw1 lxd.daemon[29590]: t=2024-07-17T11:31:09+0200 lvl=warn msg="Failed to initialize fanotify, falling back on fsnotify" err="Failed to initialize fanotify: invalid argument"
juil. 17 11:31:10 srv01-fl11-tw1 lxd.daemon[29426]: => LXD is ready
:~$ sudo ls -l /snap/bin/
total 3
lrwxrwxrwx 1 root root 7 juil. 17 16:03 lxc -> lxd.lxc
lrwxrwxrwx 1 root root 13 juil. 17 16:03 lxd -> /usr/bin/snap
lrwxrwxrwx 1 root root 13 juil. 17 16:03 lxd.buginfo -> /usr/bin/snap
lrwxrwxrwx 1 root root 13 juil. 17 16:03 lxd.check-kernel -> /usr/bin/snap
lrwxrwxrwx 1 root root 13 juil. 17 16:03 lxd.lxc -> /usr/bin/snap
:~$ sudo ls -l /usr/bin/snap
-rwxr-xr-x 1 root root 17083672 avril 24 02:00 /usr/bin/snap
:~$ which lxd
/usr/bin/lxd
:~$ which lxc
/usr/bin/lxc
:~$ /snap/bin/lxc project list
+-------------------+--------+----------+-----------------+-----------------+----------+---------------+---------------------+---------+
| NAME | IMAGES | PROFILES | STORAGE VOLUMES | STORAGE BUCKETS | NETWORKS | NETWORK ZONES | DESCRIPTION | USED BY |
+-------------------+--------+----------+-----------------+-----------------+----------+---------------+---------------------+---------+
| default (current) | YES | YES | YES | YES | YES | YES | Default LXD project | 2 |
+-------------------+--------+----------+-----------------+-----------------+----------+---------------+---------------------+---------+
:~$ lxc project list
+-------------------+--------+----------+-----------------+-----------------+----------+---------------+---------------------+---------+
| NAME | IMAGES | PROFILES | STORAGE VOLUMES | STORAGE BUCKETS | NETWORKS | NETWORK ZONES | DESCRIPTION | USED BY |
+-------------------+--------+----------+-----------------+-----------------+----------+---------------+---------------------+---------+
| default (current) | YES | YES | YES | YES | YES | YES | Default LXD project | 2 |
+-------------------+--------+----------+-----------------+-----------------+----------+---------------+---------------------+---------+
:~$ lxc storage list
+------+--------+--------+-------------+---------+-------+
| NAME | DRIVER | SOURCE | DESCRIPTION | USED BY | STATE |
+------+--------+--------+-------------+---------+-------+
:~$ lxc storage show default
Error: Storage pool not found
I know i messed up royally, but i can’t seem to find anything I haven’t tried, apart from a reboot
Any help to restore my containers is greatly appreciated