linux-kernel - Re: Possibly silly Q?

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Message-ID: <alpine.LFD.1.00.0801141551260.26152@localhost.localdomain>
Date:	Mon, 14 Jan 2008 15:53:58 -0500 (EST)
From:	"Robert P. J. Day" <rpjday@...shcourse.ca>
To:	Dagfinn Ilmari Mannsåker <ilmari@...ari.org>
cc:	Gene Heskett <gene.heskett@...il.com>, linux-kernel@...r.kernel.org
Subject: Re: Possibly silly Q?

On Mon, 14 Jan 2008, Dagfinn Ilmari Mannsåker wrote:

> Gene Heskett <gene.heskett@...il.com> writes:
>
> > Greetings;
> >
> > Do we have a utility that can force the kernel to re-read, and re-initialize
> > itself to a given drives partition tables without having to reboot if one is
> > working with a drive that is not part of the required kernel directory tree?
> […]
> > Something it seems to me, should have forced the re-init, but didn't.  So is
> > there a tool that can force that?
>
> fdisk or similar should have issued an ioctl to reread the partition
> table after writing the new one, but you can do it manually with
> 'blockdev --rereadpt <device>'.

i remember bringing up this very issue quite some time ago and, IIRC,
the consensus was that *primary* partition changes would be re-read by
the kernel, but not *logical* partition changes.  or something sort of
like that.

rday
--

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Robert P. J. Day
Linux Consulting, Training and Annoying Kernel Pedantry
Waterloo, Ontario, CANADA

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