I have a CT with the following config (last lines added by me manually, to map IDs for Free-IPA and to squash root):
If I try to restore a backup from my PBS from the web gui, it fails with
It seems to be parsing the last two idmaps and thinking it needs to also idmap the restoration (even though it doesn't, because the ids in the filesystem should just be restored identically, the LXC mapping takes care of the rest)
If I run from the CLI by doing something like
Is this a bug? Am I missing something?
Code:
arch: amd64
cores: 1
features: nesting=1
hostname: idp00
memory: 2048
net0: name=eth0,bridge=vmbr0,firewall=1,hwaddr=bc:24:11:a5:3d:9c,ip=dhcp,tag=17,type=veth
onboot: 1
ostype: centos
rootfs: GlusterSSD:100/vm-100-disk-0.raw,size=8G
swap: 512
unprivileged: 1
lxc.idmap: u 70000 70000 10000
lxc.idmap: g 70000 70000 10000
lxc.idmap: u 0 100000 65536
lxc.idmap: g 0 100000 65536If I try to restore a backup from my PBS from the web gui, it fails with
Code:
recovering backed-up configuration from 'PBSGlusterHDD:backup/ct/100/2026-06-04T08:00:03Z'
Formatting '/var/lib/vz/images/104/vm-104-disk-0.raw', fmt=raw size=8589934592 preallocation=off
Creating filesystem with 2097152 4k blocks and 524288 inodes
Filesystem UUID: e86e70ba-bd4d-4c44-a7a6-976f809b5f39
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632
restoring 'PBSGlusterHDD:backup/ct/100/2026-06-04T08:00:03Z' now..
Error: error extracting archive - encountered unexpected error during extraction: error at entry "70003": failed to extract file: failed to set ownership: Invalid argument (os error 22)
TASK ERROR: unable to restore CT 104 - command 'lxc-usernsexec -m u:0:100000:65536 -m g:0:100000:65536 -- /usr/bin/proxmox-backup-client restore '--crypt-mode=none' ct/100/2026-06-04T08:00:03Z root.pxar /var/lib/lxc/104/rootfs --allow-existing-dirs --repository backups@pbs!PVE@pbs00.nublab.ca:GlusterHDD' failed: exit code 255It seems to be parsing the last two idmaps and thinking it needs to also idmap the restoration (even though it doesn't, because the ids in the filesystem should just be restored identically, the LXC mapping takes care of the rest)
If I run from the CLI by doing something like
pct restore --storage GlusterSSD 105 PBSGlusterHDD:backup/ct/100/2026-06-04T08:00:03Z though, it works just fine!Is this a bug? Am I missing something?
