On 2023-10-04 03:10, Emanuele Rocca wrote: > P: Begin unmounting /sys... > umount: /tmp/sid-image/chroot/sys: target is busy. > E: An unexpected failure occurred, exiting...
The reason why /sys is busy is that efivarfs is mounted under /sys/firmware/efi/efivars. It seems that efivarfs gets mounted at the following stage during lb build: P: Begin installing packages (install pass)... [...] Nov 06 19:28:28 W: Possible missing firmware /lib/firmware/amdgpu/smu_13_0_10.bin for module amdgpu Nov 06 19:28:29 live-boot: core filesystems dm-verity devices utils udev blockdev dns.
