[SOLVED] Can't create CT on 5.4


Well-Known Member
Dec 5, 2017
Just upgraded to 5.4 and I can no longuer create a CT. When trying I get the following error:

extracting archive '/mnt/pve/nas/template/cache/ubuntu-18.04-lts_18.04-1_amd64.tar.gz'
tar: ./var/spool/postfix/dev/random: Cannot mknod: Operation not permitted
tar: ./var/spool/postfix/dev/urandom: Cannot mknod: Operation not permitted
Total bytes read: 758190080 (724MiB, 105MiB/s)
tar: Exiting with failure status due to previous errors
TASK ERROR: unable to create CT 102 - command 'lxc-usernsexec -m u:0:100000:65536 -m g:0:100000:65536 -- tar xpf - -z --totals --one-file-system -p --sparse --numeric-owner --acls --xattrs '--xattrs-include=user.*' '--xattrs-include=security.capability' '--warning=no-file-ignored' '--warning=no-xattr-write' -C /var/lib/lxc/102/rootfs --skip-old-files --anchored --exclude './dev/*'' failed: exit code 2

proxmox-ve: 5.4-1 (running kernel: 4.15.18-12-pve)
pve-manager: 5.4-3 (running version: 5.4-3/0a6eaa62)
pve-kernel-4.15: 5.3-3
pve-kernel-4.13: 5.2-2
pve-kernel-4.15.18-12-pve: 4.15.18-35
pve-kernel-4.15.18-11-pve: 4.15.18-34
pve-kernel-4.15.18-10-pve: 4.15.18-32
pve-kernel-4.15.18-9-pve: 4.15.18-30
pve-kernel-4.15.18-8-pve: 4.15.18-28
pve-kernel-4.15.18-7-pve: 4.15.18-27
pve-kernel-4.15.18-5-pve: 4.15.18-24
pve-kernel-4.15.18-4-pve: 4.15.18-23
pve-kernel-4.15.18-2-pve: 4.15.18-21
pve-kernel-4.15.18-1-pve: 4.15.18-19
pve-kernel-4.15.17-3-pve: 4.15.17-14
pve-kernel-4.15.17-1-pve: 4.15.17-9
pve-kernel-4.13.16-4-pve: 4.13.16-51
pve-kernel-4.13.16-3-pve: 4.13.16-50
pve-kernel-4.13.16-2-pve: 4.13.16-48
pve-kernel-4.13.16-1-pve: 4.13.16-46
pve-kernel-4.13.13-6-pve: 4.13.13-42
pve-kernel-4.13.13-2-pve: 4.13.13-33
corosync: 2.4.4-pve1
criu: 2.11.1-1~bpo90
glusterfs-client: 3.8.8-1
ksm-control-daemon: 1.2-2
libjs-extjs: 6.0.1-2
libpve-access-control: 5.1-8
libpve-apiclient-perl: 2.0-5
libpve-common-perl: 5.0-50
libpve-guest-common-perl: 2.0-20
libpve-http-server-perl: 2.0-13
libpve-storage-perl: 5.0-41
libqb0: 1.0.3-1~bpo9
lvm2: 2.02.168-pve6
lxc-pve: 3.1.0-3
lxcfs: 3.0.3-pve1
novnc-pve: 1.0.0-3
proxmox-widget-toolkit: 1.0-25
pve-cluster: 5.0-36
pve-container: 2.0-37
pve-docs: 5.4-2
pve-edk2-firmware: 1.20190312-1
pve-firewall: 3.0-19
pve-firmware: 2.0-6
pve-ha-manager: 2.0-9
pve-i18n: 1.1-4
pve-libspice-server1: 0.14.1-2
pve-qemu-kvm: 2.12.1-3
pve-xtermjs: 3.12.0-1
qemu-server: 5.0-50
smartmontools: 6.5+svn4324-1
spiceterm: 3.0-5
vncterm: 1.5-3
zfsutils-linux: 0.7.13-pve1~bpo2

Any ideas ?
Uncheck "unprivileged" in the creation wizard.
You're welcome, and yes.
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