On Saturday, April 29, 2017 1:17:11 AM CEST Daniel Frey wrote: > On 04/28/2017 12:51 PM, Alan Mackenzie wrote: > > Hello, Mick and the whole World. > > > > # Load a linux kernel, passing the root filesystem and init process as > > parameters echo "Loading kernel..." > > echo "grub_platform = " $grub_platform > > gfxpayload=text # For debugging. > > linux /vmlinuz-4.9.16-gentoo root=/dev/md127 #rootfstype=btrfs > > init=/usr/lib/systemd/systemd echo "just loaded kernel" > > boot > > > > #echo "Loading initramfs..." > > #initrd /initramfs-4.7.2.img > > > > } > > Just FYI, I boot off of a RAID10 on imsm, albiet on older hardware. Some > time ago there was a change that the kernel would not autoassemble a > RAID with a kernel only, you need to use an initramfs. (OK, I just > looked and all I find are "my raid won't boot" results rather than the > changes I found a couple years ago. But I did try.) > > I spent a couple of days trying to get mine to boot and eventually went > hell with it and used dracut to create an initramfs, and it was smooth > sailing after that.
Raid-autoassemble still works, but you need to use the "0.9" metadata for that. If you use the new metadata (1.x), you will need an initramfs. Same when using "imsm". I would assume the same is true when using "ddf". I use my own initramfs embedded into the kernel, had too many issues with the genkernel initramfs and dracut when I tried full disk encryption on my laptop. My own version is a lot smaller and simpler to maintain and (more importantly) debug. -- Joost
