Re: Optimising raid on 4k devices

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On 05/29/2019 12:21 AM, Song Liu wrote:
On Sun, May 26, 2019 at 2:27 AM Matthew Moore <matthew@moore.sydney> wrote:
Hi all,

I'm setting up a RAID6 array on 8 * 8TB drives, which are obviously
using 4k sectors.  The high-level view is XFS-on-LUKS-on-mdraid6.
Are these driver 4kB native or 512e?

Hi Song

What's the meaning of "4kB native" and "512e" here?
The sector size is 4kB or 512 byte?


For 4kB native, you don't need to do anything.

For 512e, just make sure NOT to create RAID on top of non-4kB-aligned
partitions.

Could you explain more about this?

Regards
Xiao



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