hello fellow Debian users, I have an SSD for the root filesystem, and two HDDs using RAID1 for /storage running Debian10. Now I need a plan B in case the upgrade fails.
So I made an experiment with a VM and rougly the same setup (disk-wise), and found out that when reinstalling Debian11, the d-i does recognize the RAID1 (/storage) and can reuse it while keeping the data. My question is: How does d-i know how the individual HDDs were combined into a RAID1? For all that "sudo fdisk -l" shows, the disks are "Linux raid autodetect". For all I see, it could be a RAIDX, X!=1 or two different RAIDs .... Are there RAID headers on the partitions? The same thing applies when I boot a GNU/Linux rescue system: I think I can mount the RAID1 if I know the member partitions and type of RAID using mdadm? Many Thanks and Best Regards, -- Felix Natter debian/rules!