From: "Ted Ts'o" <tytso@mit.edu>
To: Michael Conrad <mconrad@intellitree.com>
Cc: util-linux@vger.kernel.org
Subject: Re: blkid -o value
Date: Tue, 27 Mar 2012 11:43:45 -0700 [thread overview]
Message-ID: <20120327184345.GA11236@thunk.org> (raw)
In-Reply-To: <4F71FE73.9010208@intellitree.com>
On Tue, Mar 27, 2012 at 01:52:51PM -0400, Michael Conrad wrote:
>
> I see how that could be useful if and only if you use exactly one
> "-s", but if you requested more than one "-s" they still come out in
> non-stable order. It's like running a SQL query and having all the
> columns shifted because the first one was a NULL.
Actually, it's more like running an SQL query without a SORTED BY and
assuming the order of the rows was stable.
> At the very least, I would appreciate it if the man page mentioned
> that "-o value" should only ever be used with exactly one "-s".
What I would suggest is that blkid explicitly state that the order of
fields or file systems (if more than one file system is selected) is
not defined, since that's something which is true in general, and not
just for "-o value".
It might also be useful to have an EXAMPLES section which gives some
sample ways that blkid can be used.
Regards,
- Ted
next prev parent reply other threads:[~2012-03-27 18:43 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-27 17:26 blkid -o value Michael Conrad
2012-03-27 17:31 ` Ted Ts'o
2012-03-27 17:52 ` Michael Conrad
2012-03-27 18:43 ` Ted Ts'o [this message]
2012-03-28 9:00 ` Karel Zak
2012-03-28 21:03 ` Michael Conrad
2012-03-28 7:34 ` Karel Zak
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