Podman : Use External Storage

	When a Container is removed, data in it are also lost, so it's necessary to use external storage on Containers if you'd like to save your data on Containers.
[1]	It's possible to mount a directory on Docker Host into Containers.

# create a directory for containers data root@dlp:~#  mkdir /var/lib/containers/disk01 root@dlp:~#  echo "persistent storage" >> /var/lib/containers/disk01/testfile.txt # run a Container with mounting the directory above on [/mnt] root@dlp:~#  podman run -it -v /var/lib/containers/disk01:/mnt debian /bin/bash root@4cbfd32e7ee9:/#  df -hT /mnt Filesystem Type Size Used Avail Use% Mounted on /dev/mapper/debian--vg-root ext4 74G 1.8G 68G 3% /mnt root@4cbfd32e7ee9:/#  cat /mnt/testfile.txt persistent storage

[2]	It's also possible to configure external storage by Podman Data Volume command.

# create [volume01] volume root@dlp:~#  podman volume create volume01 volume01 # display volume list root@dlp:~#  podman volume ls DRIVER VOLUME NAME local volume01 # display details of [volume01] root@dlp:~#  podman volume inspect volume01 [ { "Name": "volume01", "Driver": "local", "Mountpoint": "/var/lib/containers/storage/volumes/volume01/_data", "CreatedAt": "2025-08-22T09:32:06.280204454+09:00", "Labels": {}, "Scope": "local", "Options": {}, "MountCount": 0, "NeedsCopyUp": true, "NeedsChown": true, "LockNumber": 12 } ] # run a container with mounting [volume01] to [/mnt] on container root@dlp:~#  podman run -it -v volume01:/mnt debian root@0ab478c7b4c4:/#  df -hT /mnt Filesystem Type Size Used Avail Use% Mounted on /dev/mapper/debian--vg-root ext4 74G 1.8G 68G 3% /mnt root@0ab478c7b4c4:/#  echo "Podman Volume test" > /mnt/testfile.txt root@0ab478c7b4c4:/#  exit root@dlp:~#  cat /var/lib/containers/storage/volumes/volume01/_data/testfile.txt Podman Volume test # possible to mount from other containers root@dlp:~#  podman run -v volume01:/var/volume01 debian cat /var/volume01/testfile.txt Podman Volume test # to remove volumes, do like follows root@dlp:~#  podman volume rm volume01 Error: volume volume01 is being used by the following container(s): 0ab478c7b4c4fb01ef52642a683277c23628277497ca28adbae4ff18413e0d34, 9af562aa7240aea4b346f5b9c6058101d1c66439e4996cb363a1c41be69bcdd6: volume is being used # if some containers are using the volume you'd like to remove like above, # it needs to remove target containers before removing a volume root@dlp:~#  podman rm 0ab478c7b4c4fb01ef52642a683277c23628277497ca28adbae4ff18413e0d34 root@dlp:~#  podman rm 9af562aa7240aea4b346f5b9c6058101d1c66439e4996cb363a1c41be69bcdd6 root@dlp:~#  podman volume rm volume01 volume01