[OE-core] [PATCH] classes/image_types_wic.bbclass: fix racing risk on rootfs

[Ross Burton]

On 28/10/2019 16:09, Hongxu Jia wrote:
> Since wic image creation will temporarily update rootfs/etc/fstab
> (*temporarily* means the fstab will be recovered after wic image creation),
> there is still racing risk during the temporarily time for other image
> creation (such as tar, ext)

Could this be done with a hardlink tree instead of literally copying the 
entire filesystem?

Ross