linux-kernel - [PATCH 1/1] NBD: add partition support

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Message-ID: <47F2A5A1.3010308@steeleye.com>
Date:	Tue, 01 Apr 2008 17:14:09 -0400
From:	Paul Clements <paul.clements@...eleye.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	linux-kernel@...r.kernel.org, Bill Davidsen <davidsen@....com>,
	nbd-general@...ts.sourceforge.net,
	Laurent Vivier <Laurent.Vivier@...l.net>,
	Wouter Verhelst <w@...r.be>
Subject: [PATCH 1/1] NBD: add partition support

This patch from Laurent Vivier (with minor changes by Paul Clements) 
adds partition support to NBD. By default this is turned off, but can be 
enabled with a new module parameter, max_part.

Below, Laurent notes that partition table re-read doesn't automatically 
occur. For now you'll have to open("/dev/nbdX") to get that to happen.
Longer term, nbd-client can be modified to fork just before nbd_do_it() 
and then call ioctl(BLKRRPART, "/dev/nbdX") in the parent process 
(probably need to wait for the "pid" file to show up in /sys to avoid a 
race).

Thanks,
Paul

View attachment "nbd_partitions.diff" of type "text/x-patch" (5844 bytes)