On 15/11/2021 18:39, Markus Hochholdinger wrote:
(Because of other reasons, we have intentionally choosen the superblock at the end of the device.) We change the device size of raid1 arrays, which are inside a VM, on a regular basis. And afterwards we grow the raid1 while the raid1 is online. Therefore, the superblock has to be moved.
A perfect example of this (although I can't see myself growing the partitions in this case) is a mirrored /boot.
Superblock 1.0 means that anything can read the partition without needing to know about raid. One less thing to go wrong. And I can raid-1 an EFI partition - I just need to make sure I only modify it from within linux so it gets mirrored across both drives. I would want that as protection against my primary drive failing - then my EFI partition is mirrored letting me boot from the secondary.
Cheers, Wol
