ERROR Linking tmp mounts to host: Exchanging /tmp <=> /tmp.tmp: Invalid cross-device link (os error 18)

[bigpod98]

I have hit this error ERROR Linking tmp mounts to host: Exchanging /tmp <=> /tmp.tmp: Invalid cross-device link (os error 18) with example image in install.md file, i am currently using ubuntu 23.04 as OS from which i run podman command using bootc built from source in git repo
if i mount /tmp to /tmp.tmp with podman run flag -v error changes to ERROR Linking tmp mounts to host: Symlinking /proc/1/root//tmp to /tmp.tmp: File exists (os error 17) mounting /tmp to /tmp changes error to ERROR Linking tmp mounts to host: Exchanging /tmp <=> /tmp.tmp: Device or resource busy (os error 16)

There might be some commonality with issue #91.

podman version 4.3.1

command: sudo podman run --privileged --pid=host --net=none --security-opt label=type:unconfined_t ghcr.io/cgwalters/c9s-oscore bootc install --target-no-signature-verification /dev/vda

[bigpod98]

with different image error also appeared as ERROR Linking tmp mounts to host: Exchanging /var/tmp <=> /var/tmp.tmp: Invalid cross-device link (os error 18)

[akdev1l]

/proc/1/root//tmp that looks like it is missing a component

[cgwalters]

This must be the same thing as #91 so closing as a duplicate.

However, can you just show the output of ls -ald /tmp && findmnt /tmp on the host?