Re: [Xen-devel] xen_blk driver

[Harry Butterworth <harry@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx>]

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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> 


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