unmanaged CT can't working in VE7

[lunersea]

when i use lxc-start -n xxx -F -lDEBUG -o xxx.log

lxc-start 104 20210711153105.251 INFO     lsm - lsm/lsm.c:lsm_init_static:40 - Initialized LSM security driver AppArmor
lxc-start 104 20210711153105.251 INFO     conf - conf.c:run_script_argv:332 - Executing script "/usr/share/lxc/hooks/lxc-pve-prestart-hook" for container "104", config section "lxc"
lxc-start 104 20210711153106.952 DEBUG    conf - conf.c:run_buffer:305 - Script exec /usr/share/lxc/hooks/lxc-pve-prestart-hook 104 lxc pre-start produced output: Can't call method "unified_cgroupv2_support" on an undefined value at /usr/share/perl5/PVE/LXC/Setup.pm line 428.

lxc-start 104 20210711153106.956 DEBUG    conf - conf.c:run_buffer:305 - Script exec /usr/share/lxc/hooks/lxc-pve-prestart-hook 104 lxc pre-start produced output: error in setup task PVE::LXC::Setup::unified_cgroupv2_support

lxc-start 104 20210711153106.982 ERROR    conf - conf.c:run_buffer:316 - Script exited with status 1
lxc-start 104 20210711153106.982 ERROR    start - start.c:lxc_init:816 - Failed to run lxc.hook.pre-start for container "104"
lxc-start 104 20210711153106.983 ERROR    start - start.c:__lxc_start:2007 - Failed to initialize container "104"
lxc-start 104 20210711153106.983 INFO     conf - conf.c:run_script_argv:332 - Executing script "/usr/share/lxc/hooks/lxc-pve-poststop-hook" for container "104", config section "lxc"
lxc-start 104 20210711153108.561 DEBUG    conf - conf.c:run_buffer:305 - Script exec /usr/share/lxc/hooks/lxc-pve-poststop-hook 104 lxc post-stop produced output: umount: /var/lib/lxc/.pve-staged-mounts/mp1: not mounted.

lxc-start 104 20210711153108.561 DEBUG    conf - conf.c:run_buffer:305 - Script exec /usr/share/lxc/hooks/lxc-pve-poststop-hook 104 lxc post-stop produced output: command 'umount -- /var/lib/lxc/.pve-staged-mounts/mp1' failed: exit code 32

lxc-start 104 20210711153108.571 DEBUG    conf - conf.c:run_buffer:305 - Script exec /usr/share/lxc/hooks/lxc-pve-poststop-hook 104 lxc post-stop produced output: umount: /var/lib/lxc/.pve-staged-mounts/mp0: not mounted.

lxc-start 104 20210711153108.572 DEBUG    conf - conf.c:run_buffer:305 - Script exec /usr/share/lxc/hooks/lxc-pve-poststop-hook 104 lxc post-stop produced output: command 'umount -- /var/lib/lxc/.pve-staged-mounts/mp0' failed: exit code 32

lxc-start 104 20210711153108.633 INFO     conf - conf.c:run_script_argv:332 - Executing script "/usr/share/lxcfs/lxc.reboot.hook" for container "104", config section "lxc"
lxc-start 104 20210711153109.143 ERROR    lxc_start - tools/lxc_start.c:main:308 - The container failed to start
lxc-start 104 20210711153109.143 ERROR    lxc_start - tools/lxc_start.c:main:313 - Additional information can be obtained by setting the --logfile and --logpriority options

i am sure my template support cgroup2

 

[lunersea]

and i check your code of /usr/share/perl5/PVE/LXC/Setup.pm
from line 424

sub unified_cgroupv2_support {
    my ($self) = @_;
    $self->protected_call(sub {
    $self->{plugin}->unified_cgroupv2_support();
    });
}

you forget a check if its unmanaged here
it should be

sub unified_cgroupv2_support {
    my ($self) = @_;
    return if !$self->{plugin}; # unmanaged
    $self->protected_call(sub {
    $self->{plugin}->unified_cgroupv2_support();
    });
}

problem solved