linux-ext4 - Re: ext4/xfs: about switching underlying 512B sector devices to 4K ones

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Message-ID: <20200731064639.GB25674@infradead.org>
Date:   Fri, 31 Jul 2020 07:46:39 +0100
From:   Christoph Hellwig <hch@...radead.org>
To:     Dave Chinner <david@...morbit.com>
Cc:     Takuya Yoshikawa <takuya.yoshikawa@...il.com>,
        linux-ext4@...r.kernel.org, linux-xfs@...r.kernel.org
Subject: Re: ext4/xfs: about switching underlying 512B sector devices to 4K
 ones

On Thu, Jul 30, 2020 at 09:16:05AM +1000, Dave Chinner wrote:
> if you start with 4k devices, mkfs.xfs will detect 4k
> physical/logical devices and set it's sector size to 4k
> automatically and hence will work on those devices, but you can't
> change this retrospectively....

Alternatively you can force a larger sectors size manually at mkfs
time.