% systemctl --version systemd 232 +PAM -AUDIT -SELINUX -IMA -APPARMOR +SMACK -SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ +LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD +IDN % uname -r 4.8.13-1-hortensia (username space is set to YES) ------------------------------------------------ My setup: Archlinux host managing through systemd-nspawn a Fedora container on Btrfs. I don't know what upgrade (kernel, Fedora 24 --> 25, systemd....) trigered this change, but UID/GID of my container are no more shown as before. list container directory from host: # ls -al /var/lib/machines/poppy dr-xr-xr-x 1 vu-poppy-0 vg-poppy-0 198 Dec 16 17:32 ./ drwx------ 3 root root 4.0K Dec 15 17:08 ../ dr-xr-xr-x 1 vu-poppy-0 vg-poppy-0 0 Feb 3 2016 boot/ drwxrwxr-x 1 vu-poppy-0 vg-poppy-0 62 Aug 26 19:59 db/ drwxr-xr-x 1 vu-poppy-0 vg-poppy-0 8 Apr 27 2015 dev/ drwxr-xr-x 1 vu-poppy-0 vg-poppy-0 4.2K Feb 3 2016 etc/ drwxr-xr-x 1 vu-poppy-0 vg-poppy-0 86 Feb 3 2016 home/ Before it was like this: # ls -al /var/lib/machines/poppy/ dr-xr-xr-x 1 363397120 363397120 198 Oct 4 15:54 ./ drwx------ 3 root root 4.0K Oct 1 15:53 ../ dr-xr-xr-x 1 363397120 363397120 0 Feb 3 2016 boot/ drwxrwxr-x 1 363397120 363397120 62 Aug 26 19:59 db/ drwxr-xr-x 1 363397120 363397120 8 Apr 27 2015 dev/ drwxr-xr-x 1 363397120 363397120 4.1K Feb 3 2016 etc/ drwxr-xr-x 1 363397120 363397120 76 Feb 3 2016 home/ ------------------------------------------------------------ Thank you for any hint, link to documentation about this new way to show UID/GID of a container.