Re: RAID-1 not accessible after disk replacement

[Richard <richard@radoeka.nl>]

Philip, Kuai,

Op donderdag 23 mei 2024 18:23:31 CEST schreef Phillip Susi:
> Richard <richard@radoeka.nl> writes:
> > I grew (--grow) the RAID to an smaller size as it was complaining about
> > the
> > size (no logging of that).
> > After the this action the RAID was functioning and fully accessible.
> 
> I think you mean you used -z to reduce the size of the array.  It
> appears that you are trying to replace the failed drive with one that is
> half the size, then shrunk the array, which truncated your filesystem,
> which is why you can no longer access it.  You can't shrink the disk out
> from under the filesystem.
> 
> Grow the array back to the full size of the larger disk and most likely
> you should be able to mount the filesystem again.  You will need to get
> a replacement disk that is the same size as the original that failed if
> you want to replace it, or if you can shrink the filesystem to fit on
> the new disk, you have to do that FIRST, then shrink the raid array.

I followed your advice, and made the array size the same as it used to be.
I'm now able to see the data on the partition (RAID) again.
Very nice.

Thanks a lot for your support.

-- 
Richard