I have just initialized LXD 4.6 (from the pacman repositories) on a Manajaro host
I can launch a container (lxc launch images:debian/10 deb10), but it won’t start
$ lxc start deb10
Error: Failed to run: /usr/bin/lxd forkstart deb10 /var/lib/lxd/containers /var/log/lxd/deb10/lxc.conf:
Try `lxc info --show-log deb10` for more info
the error does not tell me much unfortunately
$ lxc info --show-log deb10
Name: deb10
Location: none
Remote: unix://
Architecture: x86_64
Created: 2020/10/09 19:37 UTC
Status: Stopped
Type: container
Profiles: default
Log:
lxc deb10 20201010081805.280 WARN cgfsng - cgroups/cgfsng.c:mkdir_eexist_on_last:1152 - File exists - Failed to create directory "/sys/fs/cgroup/cpuset//lxc.monitor.deb10"
lxc deb10 20201010081805.281 WARN cgfsng - cgroups/cgfsng.c:cgroup_tree_create:1168 - File exists - The /sys/fs/cgroup/unified//lxc.payload.deb10 cgroup already existed
lxc deb10 20201010081805.282 WARN cgfsng - cgroups/cgfsng.c:mkdir_eexist_on_last:1152 - File exists - Failed to create directory "/sys/fs/cgroup/cpuset//lxc.payload.deb10-1"
lxc deb10 20201010081805.289 ERROR conf - conf.c:lxc_map_ids:2817 - newuidmap failed to write mapping "": newuidmap 7272 0 1000000 1000000000
lxc deb10 20201010081805.289 ERROR start - start.c:lxc_spawn:1732 - Failed to set up id mapping.
lxc deb10 20201010081805.290 ERROR lxccontainer - lxccontainer.c:wait_on_daemonized_start:849 - Received container state "ABORTING" instead of "RUNNING"
lxc deb10 20201010081805.293 ERROR start - start.c:__lxc_start:1999 - Failed to spawn container "deb10"
lxc deb10 20201010081805.293 WARN start - start.c:lxc_abort:1018 - No such process - Failed to send SIGKILL via pidfd 30 for process 7272
lxc deb10 20201010081805.418 ERROR conf - conf.c:lxc_map_ids:2817 - newuidmap failed to write mapping "": newuidmap 7290 1000000000 0 1 0 1000000 1000000000
lxc deb10 20201010081805.418 ERROR conf - conf.c:userns_exec_1:4023 - Error setting up {g,u}id mappings for child process "7290"
lxc deb10 20201010081805.419 WARN cgfsng - cgroups/cgfsng.c:cgfsng_payload_destroy:1048 - No such file or directory - Failed to destroy cgroups
lxc 20201010081805.438 WARN commands - commands.c:lxc_cmd_rsp_recv:122 - Connection reset by peer - Failed to receive response for command "get_state"
I am also running KVM/QEMU VM’s on that same machine and have noticed that the virt-manager offers to create LXC containers (which I did not try). So I am wondering whether this issue might be due to KVM/qemu interfering with the plain LXD?
thx for the pointer. The fact that those two files don’t exist seconds your approach I guess.
Actually it’s the first time I become aware of the existence of such files.
I’ll try to figure out how to go about those.
On a remote ubuntu LXD host I see there is an lxd:100000:65536 entry in the /etc/subuid & /etc/subgid. I assume the one I’ll need now should be pretty similar to this.
The vast majority of users will never have to do anything about it, either because they’re using the snap which does not use those files or they’re using a distribution that configures it during installation.
based on the arch wiki I have this entry in /etc/subuid & /etc/subgid
root:100000:65536
then I ran usermod --add-subuid 65536-100000 [myusername] aswell as usermod --add-subuid 65536-100000 root
after restarting the lxd service I still get
$ lxc start deb10
Error: Failed to run: /usr/bin/lxd forkstart deb10 /var/lib/lxd/containers /var/log/lxd/deb10/lxc.conf:
Try `lxc info --show-log deb10` for more info
$ lxc info --show-log deb10
Name: deb10
Location: none
Remote: unix://
Architecture: x86_64
Created: 2020/10/09 19:37 UTC
Status: Stopped
Type: container
Profiles: default
Log:
lxc deb10 20201027055533.797 WARN cgfsng - cgroups/cgfsng.c:mkdir_eexist_on_last:1152 - File exists - Failed to create directory "/sys/fs/cgroup/cpuset//lxc.monitor.deb10"
lxc deb10 20201027055533.798 WARN cgfsng - cgroups/cgfsng.c:cgroup_tree_create:1168 - File exists - The /sys/fs/cgroup/unified//lxc.payload.deb10 cgroup already existed
lxc deb10 20201027055533.798 WARN cgfsng - cgroups/cgfsng.c:cgroup_tree_create:1168 - File exists - The /sys/fs/cgroup/unified//lxc.payload.deb10-1 cgroup already existed
lxc deb10 20201027055533.799 WARN cgfsng - cgroups/cgfsng.c:mkdir_eexist_on_last:1152 - File exists - Failed to create directory "/sys/fs/cgroup/cpuset//lxc.payload.deb10-2"
lxc deb10 20201027055533.806 ERROR conf - conf.c:lxc_map_ids:2817 - newuidmap failed to write mapping "newuidmap: uid range [0-1000000000) -> [1000000-1001000000) not allowed": newuidmap 13123 0 1000000 1000000000
lxc deb10 20201027055533.806 ERROR start - start.c:lxc_spawn:1732 - Failed to set up id mapping.
lxc deb10 20201027055533.806 ERROR lxccontainer - lxccontainer.c:wait_on_daemonized_start:849 - Received container state "ABORTING" instead of "RUNNING"
lxc deb10 20201027055533.808 ERROR start - start.c:__lxc_start:1999 - Failed to spawn container "deb10"
lxc deb10 20201027055533.808 WARN start - start.c:lxc_abort:1018 - No such process - Failed to send SIGKILL via pidfd 30 for process 13123
lxc deb10 20201027055533.955 ERROR conf - conf.c:lxc_map_ids:2817 - newuidmap failed to write mapping "newuidmap: uid range [0-1000000000) -> [1000000-1001000000) not allowed": newuidmap 13140 1000000000 0 1 0 1000000 1000000000
lxc deb10 20201027055533.955 ERROR conf - conf.c:userns_exec_1:4023 - Error setting up {g,u}id mappings for child process "13140"
lxc deb10 20201027055533.956 WARN cgfsng - cgroups/cgfsng.c:cgfsng_payload_destroy:1048 - No such file or directory - Failed to destroy cgroups
lxc 20201027055533.998 WARN commands - commands.c:lxc_cmd_rsp_recv:122 - Connection reset by peer - Failed to receive response for command "get_state"
so there was no cure from that operation. Any ideas where to go from here?