I have a btrfs RAID1 system. I did install it with /dev/sda disk (efs on
sda1, btrfs on sda2). Then, after install, I added a sdb disk (vfat on
sdb1, btrfs on sdb2) and I did btrfs balance.
As /dev/sda is now old, I want to change it. I know btrfs procedures but
I do not know grub procedures.
I suppose I should install "some grub thing" on sdb1 and inform the
system to boot on sdb1. How to do that ?
Is there a good tutorial that I have not found ?
Is it possible to have a system booting automatically on sdb1 if sda1
fails ?
In fact I did add later an identical sdc disk...
