From mboxrd@z Thu Jan  1 00:00:00 1970
From: James Bottomley <James.Bottomley@steeleye.com>
Subject: Re: LUN resizing
Date: 25 Nov 2003 10:11:52 -0600
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To: James Bottomley <James.Bottomley@SteelEye.com>
Cc: Stefan Voelkel <Stefan.Voelkel@millenux.com>, SCSI Mailing List <linux-scsi@vger.kernel.org>

On Tue, 2003-11-25 at 09:43, James Bottomley wrote:
> You simply do
> 
> echo 1 > /sys/bus/scsi/<device>/rescan
> 
> It will re-read the capacity and partition table (as long as the device
> is unmounted and none of the partitions open).

OK, I actually tried this, you need two steps.  The one above will
reread the capacity.  After that you send a BLKRRPART ioctl to the
device to re-read the partition table. (but, obviously, something else
will have to update the partition table to see the new device size)

James