On 29 Nov 2023, at 22:45, Martin Wege wrote: > ? > > On Fri, Nov 24, 2023 at 9:57 AM Martin Wege <martin.l.wege@xxxxxxxxx> wrote: >> >> Hello, >> >> We get a umount.nfs: /mnt: block devices not permitted on fs in a snap >> container on Ubuntu. >> >> Can anyone explain what is going wrong? Something in umount is calling umount_error() with -EACCES. I admit that error message makes no sense, it seems to be cruft. Maybe you can run the umount in gdb with a breakpoint on umount_error() and send along the stack. Ben