Re: new drive is 4 sectors shorter, can it be used for swraid5 array?

[Nix <nix@esperi.org.uk>]

On 19 Mar 2022, Wols Lists uttered the following:

> On 19/03/2022 04:10, Marc MERLIN wrote:
>>> If you find it needs more than the size of sdk1, as an emergency measure you
>>> could wipe off the partition table and add the entire sdk as the array member.
>
>> Yeah, I thought of that, just don't really like it, and not sure if
>> mdadm -can looks for raw drives in addition to partitions
>> 
> mdadm has absolutely no trouble with that at all. All it cares about is if something is a block device - if it finds an mdadm
> signature at the start of a block device it will use it.
>
> The problem is the eejits out there who assume that all physical
> drives must be partitioned. And we know from experience that there are
> eejits out there who assume that any drive without an MBR or GPT just
> *must* be unused and it's *perfectly* *okay* to write said MBR or GPT
> *without* *asking*. Just trashing your mdadm (or lvm, or whatever yada
> ydad) signature in the process.

... and we know that some of the eejits out there write EFI firmware :(
and some of them blow away things like this on boot, on resume from
suspend, 

> It's not common

... thank goodness.

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