https://pbs.proxmox.com/wiki/index.php/Upgrade_from_2_to_3
if it is really the container start that fails, could you start the container in debug mode (
pct start VMID --debug 1
and post the log here?
Hello!
Here is the output
root@pvebackup:~# pct start 103 --debug 1
run_buffer: 321 Script exited with status 25
lxc_init: 847 Failed to run lxc.hook.pre-start for container "103"
__lxc_start: 2008 Failed to initialize container "103"
d 0 hostid 100000 range 65536
INFO lsm - ../src/lxc/lsm/lsm.c:lsm_init_static:38 - Initialized LSM security driver AppArmor
INFO conf - ../src/lxc/conf.c:run_script_argv:337 - Executing script "/usr/share/lxc/hooks/lxc-pve-prestart-hook" for container "103", config section "lxc"
DEBUG conf - ../src/lxc/conf.c:run_buffer:310 - Script exec /usr/share/lxc/hooks/lxc-pve-prestart-hook 103 lxc pre-start produced output: unsupported debian version '12.7'
ERROR conf - ../src/lxc/conf.c:run_buffer:321 - Script exited with status 25
ERROR start - ../src/lxc/start.c:lxc_init:847 - Failed to run lxc.hook.pre-start for container "103"
ERROR start - ../src/lxc/start.c:__lxc_start:2008 - Failed to initialize container "103"
INFO conf - ../src/lxc/conf.c:run_script_argv:337 - Executing script "/usr/share/lxcfs/lxc.reboot.hook" for container "103", config section "lxc"
startup for container '103' failed