LXD container don't start

Sorry to open another post (there is already 2 about this error here and here) but I can’t make my container start.
The container is running on a LXD server, I stop it, snapshot it and move it to another LXD server but the container don’t start on the new server.

Profile is the same, storage is the same (ZFS), here is log :

Name: suivi
Location: none
Remote: unix://
Architecture: x86_64
Created: 2021/02/19 19:24 UTC
Status: Running
Type: container
Profiles: lanprofile
Pid: 1827403
  lo:	inet
  lo:	inet6	::1
  eth0:	inet6	fe80::216:3eff:fe80:a764	br0
  Processes: 1
  Disk usage:
    root: 92.25GB
  CPU usage:
    CPU usage (in seconds): 0
  Memory usage:
    Memory (current): 2.33MB
    Memory (peak): 2.45MB
  Network usage:
      Bytes received: 1.87kB
      Bytes sent: 586B
      Packets received: 13
      Packets sent: 7
      Bytes received: 0B
      Bytes sent: 0B
      Packets received: 0
      Packets sent: 0


lxc suivi 20210308192729.853 WARN     cgfsng - cgroups/cgfsng.c:mkdir_eexist_on_last:1126 - File exists - Failed to create directory "/sys/fs/cgroup/cpuset//lxc.monitor.suivi"
lxc suivi 20210308192729.858 WARN     cgfsng - cgroups/cgfsng.c:mkdir_eexist_on_last:1126 - File exists - Failed to create directory "/sys/fs/cgroup/cpuset//lxc.payload.suivi"
lxc suivi 20210308192729.886 ERROR    conf - conf.c:turn_into_dependent_mounts:3065 - No such file or directory - Failed to recursively turn old root mount tree into dependent mount. Continuing...
lxc suivi 20210308192729.905 ERROR    utils - utils.c:__safe_mount_beneath_at:1106 - Function not implemented - Failed to open 30(dev)

My profile:

config: {}
description: Default LXD profile
    nictype: macvlan
    parent: br0
    type: nic
    path: /
    pool: default
    type: disk
name: lanprofile
- /1.0/instances/dokuwiki
- /1.0/instances/suivi

(it did the same for dokuwiki container and no problem at all)

suivi container is an upgrade from LXC and is priviledged

Bridge definition (/etc/netplan/01-netcfg.yaml)

  version: 2
  renderer: networkd
      dhcp4: no
      dhcp4: yes
        - eno1

I can lxc exec into container here is dmesg output :

[1464273.058698] mace80c9573: renamed from eth0
[1464275.060036] audit: type=1400 audit(1615232376.887:170): apparmor="STATUS" operation="profile_remove" profile="unconfined" name="lxd-suivi_</var/snap/lxd/common/lxd>" pid=1834495 comm="apparmor_parser"
[1464291.772974] audit: type=1400 audit(1615232393.599:171): apparmor="STATUS" operation="profile_load" profile="unconfined" name="lxd-suivi_</var/snap/lxd/common/lxd>" pid=1834730 comm="apparmor_parser"
[1464291.858765] eth0: renamed from macce9636b4

Container configuration :

lxc config show suivi
architecture: x86_64
  image.architecture: amd64
  image.description: Alpine 3.13 amd64 (20210115_13:00)
  image.os: Alpine
  image.release: "3.13"
  image.serial: "20210115_13:00"
  image.type: root.tar.xz
  image.variant: default
  security.privileged: "true"
  volatile.base_image: e1727aceac1099a18d4405a7600f6fb865953ace23b277df1506898bf05395b2
  volatile.eth0.host_name: macfbda2f73
  volatile.eth0.hwaddr: 00:16:3e:80:a7:64
  volatile.eth0.last_state.created: "false"
  volatile.eth0.name: eth0
  volatile.idmap.base: "0"
  volatile.idmap.current: '[]'
  volatile.idmap.next: '[]'
  volatile.last_state.idmap: '[]'
  volatile.last_state.power: RUNNING
  volatile.uuid: ae63edff-842c-4241-b34e-11569cb1a5e1
devices: {}
ephemeral: false
- lanprofile
stateful: false
description: ""

Image os, description, release, etc are not correct, it’s due to my method of migration from LXC to LXD (creation of a small container et replacement of rootfs like suggested by @stgraber )

Container is “RUNNING” but not totally :

$ lxc ls
|   NAME   |  STATE  |       IPV4        | IPV6 |   TYPE    | SNAPSHOTS |
| dokuwiki | RUNNING | (eth0) |      | CONTAINER | 0         |
| suivi    | RUNNING |                   |      | CONTAINER | 0         |

I try to stop my container, mount it’s file system (sudo zfs mount tank/containers/suivi) , delete backup.yaml file (sudo rm /var/snap/lxd/common/lxd/storage-pools/default/containers/suivi/backup.yaml), unmount (sudo zfs mount tank/containers/suivi) and start again the container, no more success.

Thanks for your help :pray:

Nobody ?
I really need to move this container, help appreciated.