Thread: overlayfs after switch_root

i'm trying overlayfs working. patched kernel , overlay seems work in initramfs issue switch_root lose overlay.

here initramfs init:

code:

#!/bin/busybox sh    # mount /proc , /sys filesystems.  mount -t proc none /proc  mount -t sysfs none /sys    echo "welcome busybox!"  mount -o ro /dev/mmcblk0p2 /mnt/root  mount -t tmpfs tmpfs /overlay  mount -t overlayfs overlayfs -o lowerdir=/mnt/root,upperdir=/overlay /mnt/ro    # clean up.  #umount /proc  #umount /sys    exec switch_root /mnt/ro /sbin/init

/mnt/root , /overlay merged /mnt/ro. , works right point make /mnt/ro root. there seems little information on overlayfs hope can here.

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