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Date:   Mon, 31 Aug 2020 16:15:05 +0500
From:   Roman Mamedov <rm@romanrm.net>
To:     Hamish Moffatt <hamish-btrfs@moffatt.email>
Cc:     Zygo Blaxell <ce3g8jdj@umail.furryterror.org>,
        linux-btrfs@vger.kernel.org
Subject: Re: new database files not compressed
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On Mon, 31 Aug 2020 18:53:54 +1000
Hamish Moffatt <hamish-btrfs@moffatt.email> wrote:

> $ sudo mount -O compress-force=zstd /dev/sdb /mnt/test

Specifying the filesystem mount options is done with -o, not -O.
See "man mount".


-- 
With respect,
Roman