On 04/09/2025 05:54, Jeffery Small wrote:
Wol, thanks for the reply. What is a 0.9 layout? I've never heard of
that before.
0.9 is an old layout. You'll notice that when raid details are posted it
normally says "raid 1.2 format", which is the layout. All the raid 1.x
formats have identical superblock format, the difference between the
1.0, 1.1 and 1.2 formats is simply the location of the superblock. And
it's always somewhere at the start of the partition.
0.9 is the old-style format. And it's placed at the end of the
partition. So if the raid gets trashed somehow, because the filesystem
starts at the start of the partition you can mount it directly if you
have to.
I'm confused about why to not mirror the boot partition.
Other articles I've read on the subject suggest doing this. What is the
problem?
I'm just thinking that if you do have boot trouble, this makes it easier
to access your boot partition (which should be effectively read only
almost all time), and might make recovering your system easier.
Now maybe we are having a communication problem mixing up the initial
UEFI partition (mounted at /boot/efi) which does get set up on each SSD
independently and is definitely NOT mirrored, and the actual boot partition
(mounted as /boot) which is where GRUB and kernel are installed. If I
made one big mirrored / partition, /boot could just be included along with
everything else.
Possibly. I've not got to grips with UEFI - I learnt most of my boot-fu
back in the days of lilo :-)
As I say, I'm just trying to avoid future problem from something that I
didn't anticipate from the start.
Cheers,
Wol
