here is a description of what I'm trying to do.
I created a small rootfs with buildroot and I gPXE booted it. Once that is running I do
mount -t tmpfs -o size=4G mount -t tmpfs -o size=4G none /tmp
(I have a system with 8GB of RAM)
and then i copy with scp a new rootfs (rootfs.img whose size is around 2.5GB) under /tmp
At this point, this I run this simple script
#!/bin/bash
cd /tmp
mkdir newrootfs
mount rootfs.img newrootfs
cd newrootfs
mkdir oldrootfs
pivot_root . oldrootfs
exec chroot . sh -c 'exec /sbin/init' <dev/console >dev/console 2>&1
I can see the new root is rootfs, but still there is something not working. When I run the script I get the message
init: illegal runlevel (null)
Any idea of what can be wrong?
Thank you all,
Luca
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