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Date: Tue, 07 Nov 2000 14:57:33 +0200
From: Justin Schoeman <justin@suntiger.ee.up.ac.za>
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To: Joe Woodward <woodey@twasystems.fsnet.co.uk>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: removable EIDE disks
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> Joe Woodward wrote:
> 
> I am trying to use removable EIDE hard disks on a Red Hat Linux 6.1
> machine, for backup / walknet purposes.
> 
> Issuing a BLKRRPART ioctl call immediately after changing the disk
> works, but only if the new disk is no larger than the disk present at
> boot time (smaller and equal capacity disks work OK).
> 
> How do I get Linux to recognise that the media in /dev/hdc has
> changed?
> 
> Bill Nottingham suggested that I ask you, as he is unsure if this is a
> bug or if there is a technique that I am missing.
> 
> 
> Thanks
> 
> Richard Stanton
> 
> rich@twasystems.fsnet.co.uk
> 

Try using the HDIO_SCAN_HWIF ioctl instead.  This is what I have been
using, and it work(ed) just fine. (It seems to result in hard locks on
the newer 2.2.x, where x>14, kernels though).

-justin
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