My dockstars are booting via NFS and it works great since years.
They have a specific entry in their fstab file: /swapfile none swap defaults 0 0
The /swapfile was made with dd if=/dev/zero of=/swapfile bs=4M count=96 conv=sync,noerror and then mkswap -c -L swapfile /swapfile and then chmod 0600 /swapfile
From kernel linux-kirkwood-dt-5.0.11-1 to linux-kirkwood-dt-5.1.3-1, my dockstars stopped working properly.
The swapfile can't be seen anymore by the kernel despite the fstab entry.
So I had to return to kernel kirkwood-dt-5.0.11-1.
Any idea why ?