From mboxrd@z Thu Jan  1 00:00:00 1970
From: Harry Butterworth <harry@hebutterworth.freeserve.co.uk>
Subject: Re: xen_blk driver
Date: Tue, 03 May 2005 10:35:28 +0100
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References: <20050503092356.GJ3325@idi.ntnu.no>
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To: =?UTF-8?Q?H=E5=B6=A1rd?= Bjerke <Havard.Bjerke@idi.ntnu.no>
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The blkfront code sends xend a "driver status up" message in
wait_for_blkif.  Xend uses this as a stimulus to notify the blkfront
code about available block devices.

On Tue, 2005-05-03 at 11:23 +0200, H?ard Bjerke wrote:
> I have some trouble understanding the interface between the blkfront and blkback drivers. When a dom1 is created, after xlblk_init() is called, the wait_for_blkif() routine waits for a connection of some kind until it times out with a "xen_blk: Timeout connecting to device!". Is this a connection from Xend, Xen or dom0 it's waiting for? How is this connection timed to occur exactly when wait_for_blkif() is looping?
> 
> Hvard
> 
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