On 9/2/24 8:15 AM, Paul E Luse wrote:
It shows the RAID level above as 1E which is effectively RAID1 near layout as
described here: https://raid.wiki.kernel.org/index.php/A_guide_to_mdadm
Thank you for the link Paul,
I've read it, but I'm still confused as to just what that raid was. Yes, I
read that Raid1 2-disk can be the basis of a Raid 4, 5, 6 setup, but where I'm
confused is the output shows:
Secondary Level[1] : Striped
Device Size[1] : 2925241344
Array Size[1] : 46803861504
Which shows the Array size as 46803861504 and Device Size as 2925241344. So
the best I can glean from the wiki is that is some type of Raid0 setup made
out of Raid1 mirrors.
Where I also have trouble is with:
Physical Disks : 255
But earlier there was:
Raid Devices[0] : 16 (15@0K 16@0K 17@0K 18@0K 19@0K 20@0K 21@0K 22@0K 23@0K
24@0K 25@0K 26@0K 27@0K 28@0K 29@0K 30@0K)
I guess the 8-bit worth of physical disks that make up 16 raid devices (or
16 physical disks per-device). I guess there is just no Cliff's Notes version
that outlines all of the ways linux-raid can be fit together and extrapolated
to make all kinds of things. Just glad I didn't have to work out the command
line to replace a disk in that...
--
David C. Rankin, J.D.,P.E.
