[Libguestfs] Weird results from g.sh()

Hi, I'm using libguestfs 1.42, When I run the following python3 commands on a rhel7.8: print(g.ls('/sys')) print(g.sh('ls /sys')) I get: [] block bus class dev devices firmware fs hypervisor kernel module power It seems that g.ls('/sys') is chrooted correctly. But g.sh('ls /sys') isn't. I came across this behavior when I used g.command(['grub2-mkconfig', '-o', '....']) on rhel7.8 and it didn't produce the correct linuxefi/initrdefi entries in grub, since in rhel7.8 the uefi detection algorithm is checking in bash '[ -d /sys/firmware/efi ]'. https://src.fedoraproject.org/rpms/grub2/blob/71e0fb4ea646071ec86e4a65bb2... I thought I could simply g.mkdir_p('/sys/firmware/efi') - but that created a fake dir in my chrooted environment, where grub2-mkconfig somehow was inspecting the real /sys as demonstrated in the above 'ls' example. Any ideas on why sh jailbreaks the chroot? is /sys set through some environment variable? Thanks!