[CentOS] Upgrading system from non-RAID to RAID1

Thu Jan 12 13:04:53 UTC 2023
Gionatan Danti <g.danti at assyoma.it>

Il 2023-01-12 09:00 Simon Matter ha scritto:
> That's a huge improvement especially on very large disks.

Hi, not-ancient versions of Linux MD RAID cope with these issues via two 
different means:
- a write bitmap to track dirty disk regions;
- an embedded bad list sector to remap such sectors when appropriate 
(and without failing the entire array, if possible).

Still, splitting a disk into multiple slices has the specific advantage 
of using different RAID levels on different dataset (which can be very 
valuable in some cases).


Danti Gionatan
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