[Libguestfs] Failing guestfish command in

Hey, I'm trying to use guestfish to run a few lvm-related commands on an image, but I'm getting errors. The error message suggested that I should send the error output to this mailing list. The simplest version of the command I'm running is as follows: ``` PSEUDO_DISABLED=1 guestfish -v --format=raw -a MY_IMAGE << EOF run pvcreate /dev/sda EOF ``` and the error that I'm getting is quite long, but it seems to start failing about here: ``` supermin: deleting initramfs files supermin: chroot Starting /init script ... mount: only root can use "--types" option (effective UID is 65534) /init: line 38: /proc/cmdline: No such file or directory mount: only root can use "--types" option (effective UID is 65534) mount: only root can use "--options" option (effective UID is 65534) dd: failed to open '/dev/urandom': No such file or directory Failed to redirect standard streams to /dev/null: No such file or directory ``` The errors at this point are quite obviously due to the mount commands somehow failing, and most errors are complaining about /dev/ not existing, and other fatal failures. This is especially unusual, because running this command normally on Ubuntu 20.04 works fine, but when it runs as part of my build process, it fails. The build tool that I'm using is Yocto's bitbake. I don't think it even begins to try to run the LVM commands, as it seems to fail before it even gets there. Interestingly, if I clean out the files at /tmp/.guestfs-1000/, then run the test tool like this "TMPDIR=/tmp libguestfs-test-tool", then also run my build with "TMPDIR=/tmp" set, it will succeed normally. The files in /tmp are identical in every way (I shasumed them), except for two: "/tmp/.guestfs-1000/appliance.d/initrd" and "/tmp/.guestfs-1000/appliance.d/root". Their permissions and user/group are also identical. The versions of relevant packages are as follows: ``` supermin 5.1.20 guestfish 1.40.2 QEMU emulator version 4.2.1 (Debian 1:4.2-3ubuntu6.23) Linux Kernel 5.15.0-53-generic ``` I'm happy to provide more information, or full debug logs, if someone can offer instructions on how best to share them. Regards,