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Date: Wed, 16 Dec 2015 13:44:18 +0800
From: Erich Dollansky <erichsfreebsdlist@alogt.com>
To: Sergei G <sergeig.public@gmail.com>
Cc: FreeBSD Questions <freebsd-questions@freebsd.org>
Subject: Re: which label to use in mount?
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Hi,

On Tue, 15 Dec 2015 19:37:16 -0800
Sergei G <sergeig.public@gmail.com> wrote:

> I have executed the following commands:
> 
>   # gpart create -s GPT ada1
>   # gpart add -t freebsd-ufs -l sback -s 50G ada1
>   # newfs -nL back /dev/ada1p1
> 
you allow the destruction of the GPT label by this.

newfs /dev/label/sback

should be the better option.

> so, now I can mount it as either:
> 
>   # mount /dev/gpt/sback /mnt
> or
>   # mount /dev/ufs/back /mnt

This will work only until the disk became filled.
> 
> Both seem to work.  However, command
> 
>   df -H
> 
> reports slightly different numbers:
> 
> /dev/ufs/back                           52G    4.1k     48G
> 0%    /mnt dev/gpt/dback                          48G    4.0K
> 45G     0%    /mnt
> 
> Which way is the correct way to mount?
> 
Use only tyhe GPT label, but also for formatting.

Erich