Mount host directory inside LXD container.
Create a directory on a host operating system.
$ sudo mkdir /mnt/disk/archivebox
Look for subuid and subgid files.
$ ls /snap/lxd/current/etc/
bash_completion.d ethertypes logrotate.conf lvm nanorc protocols ubuntu-sb.crt vimrc
Snap package does not provide these files, so the beginning of the uid/gid range will be 1000000. This means that you need to use 1002000:1002000 uid:gid combination to get 2000:2000 uid:gid inside guest instance.
$ sudo chown -R 1002000:1002000 /mnt/disk/archivebox
Mount /mnt/disk/archivebox host directory to /opt/archivebox inside archivebox instance.
$ sudo -i lxc config device add archivebox archivebox_directory disk source=/mnt/disk/archivebox path=/opt/archivebox
Device archivebox_directory added to archivebox
Directory will be created automatically and defined user and group will reflect subordinate user/group IDs.
$ sudo -i lxc exec archivebox -- stat /opt/archivebox
File: /opt/archivebox Size: 4096 Blocks: 8 IO Block: 4096 directory Device: 800h/2048d Inode: 36306945 Links: 9 Access: (0755/drwxr-xr-x) Uid: ( 2000/archivebox) Gid: ( 2000/archivebox) Access: 2021-12-19 16:22:54.660738431 +0000 Modify: 2021-12-19 20:09:24.424730331 +0000 Change: 2021-12-19 20:09:24.424730331 +0000 Birth: 2021-12-19 16:22:54.660738431 +0000
Alternatively, it will be owned by 65534/nobody user when you skip setting subordinate user/group IDs.
Display device configuration for archivebox instance.
$ sudo -i lxc config device show archivebox
archivebox_directory: path: /opt/archivebox source: /mnt/disk/archivebox type: disk
Edit instance configuration.
$ sudo -i lxc config edit archivebox
### This is a YAML representation of the configuration.
### Any line starting with a '# will be ignored.
###
### A sample configuration looks like:
### name: instance1
### profiles:
### - default
### config:
### volatile.eth0.hwaddr: 00:16:3e:e9:f8:7f
### devices:
### homedir:
### path: /extra
### source: /home/user
### type: disk
### ephemeral: false
###
### Note that the name is shown but cannot be changed
architecture: armv7l
config:
image.architecture: armhf
image.description: Debian bullseye armhf (20211219_05:25)
image.os: Debian
image.release: bullseye
image.serial: "20211219_05:25"
image.type: squashfs
image.variant: default
volatile.base_image: c5cb7135fbb8785c9971daf29709d4840efc3b2b4397684752ddd0f34f078dc5
volatile.eth0.host_name: vethd3c7b49e
volatile.eth0.hwaddr: 00:16:3e:38:03:48
volatile.idmap.base: "0"
volatile.idmap.current: '[{"Isuid":true,"Isgid":false,"Hostid":1000000,"Nsid":0,"Maprange":1000000000},{"Isuid":false,"Isgid":true,"Hostid":1000000,"Nsid":0,"Maprange":1000000000}]'
volatile.idmap.next: '[{"Isuid":true,"Isgid":false,"Hostid":1000000,"Nsid":0,"Maprange":1000000000},{"Isuid":false,"Isgid":true,"Hostid":1000000,"Nsid":0,"Maprange":1000000000}]'
volatile.last_state.idmap: '[{"Isuid":true,"Isgid":false,"Hostid":1000000,"Nsid":0,"Maprange":1000000000},{"Isuid":false,"Isgid":true,"Hostid":1000000,"Nsid":0,"Maprange":1000000000}]'
volatile.last_state.power: RUNNING
volatile.uuid: 3cc4ff6e-e343-4312-b285-68b75272bdb0
devices:
archivebox_directory:
path: /opt/archivebox
source: /mnt/disk/archivebox
type: disk
ephemeral: false
profiles:
- default
stateful: false
description: ""
Remove device configuration.
$ sudo -i lxc config device remove archivebox archivebox_directory
Device archivebox_directory removed from archivebox