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Date:   Wed, 30 Nov 2022 03:22:40 +0500
From:   Roman Mamedov <rm@romanrm.net>
To:     Jani Partanen <jiipee@sotapeli.fi>
Cc:     David T-G <davidtg-robot@justpickone.org>,
        Linux RAID list <linux-raid@vger.kernel.org>
Subject: Re: md RAID0 can be grown (was "Re: how do i fix these RAID5
 arrays?")
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On Tue, 29 Nov 2022 23:17:15 +0200
Jani Partanen <jiipee@sotapeli.fi> wrote:

> joined example 1TB and 2TB together with md linear so I could add that as 
> member to other 3TB raid5 pool.

I realize you describe a past setup, but as a fun tip, you could have used md
RAID0 for this: with different sized devices it would automatically stripe the
first 1TB of both disks, and then continue with the tail of 2TB drive as-is.
This would provide some linear speed benefit for the most part of the device,
with no change in reliability in this scheme compared to md linear.

-- 
With respect,
Roman