linux-kernel - Initramfs and /sbin/hotplug fun

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Message-ID: <45AB8CB9.2000209@walrond.org>
Date:	Mon, 15 Jan 2007 14:16:25 +0000
From:	Andrew Walrond <andrew@...rond.org>
To:	LKML <linux-kernel@...r.kernel.org>
Subject: Initramfs and /sbin/hotplug fun

If the initramfs root filesystem contains /sbin/hotplug, the kernel 
starts calling it very early in the kernel boot process, well before 
/init has been called. In my case this resulted in lots of hotplug 
segfault messages as the kernel boots, followed by a thoroughly unhappy 
hotplug+udev once /init actually gets control.

To solve this, I deleted /sbin/hotplug from the initramfs archive and 
modified /init to reinstate it once it gets control. This works fine, 
but seems inelegant. Is there a better solution? Should sbin/hotplug be 
called at all before the kernel has passed control to /init?

Andrew Walrond
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