flatpak fails with "pivot_root: Invalid argument"

[juanitotc]

see: flatpak/flatpak#1007

$ flatpak install --user flathub org.libretro.RetroArch
...
pivot_root: Invalid argument

..and...
$ bwrap --bind / / true
pivot_root: Invalid argument

[alexlarsson]

For the record, this is with tinycorelinux

[cgwalters]

Isn't this just "/ is not a real mount point" issue? See #172 specifically 703e169 which is related in the sense that I suspect tiny core is doing the same thing as bwrap for its rootfs setup. Basically it needs to use pivot_root() or otherwise make the final / a real mountpoint.

[juanitotc]

How do I check if that's th case?

[jlebon]

How do I check if that's th case?

You can use e.g. findmnt /.

See also #135 for other reasons why pivot_root can return EINVAL.

[juanitotc]

$ findmnt /
TARGET SOURCE FSTYPE OPTIONS
/ rootfs rootfs rw,size=8102252k,nr_inodes=2025563

[juanitotc]

bump?