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 ]'.

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!