* xen_blk driver
@ 2005-05-03 9:23 Håvard Bjerke
2005-05-03 9:35 ` Harry Butterworth
0 siblings, 1 reply; 2+ messages in thread
From: Håvard Bjerke @ 2005-05-03 9:23 UTC (permalink / raw)
To: xen-devel
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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?
Håvard
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: xen_blk driver
2005-05-03 9:23 xen_blk driver Håvard Bjerke
@ 2005-05-03 9:35 ` Harry Butterworth
0 siblings, 0 replies; 2+ messages in thread
From: Harry Butterworth @ 2005-05-03 9:35 UTC (permalink / raw)
To: H嶡rd Bjerke; +Cc: xen-devel
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
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xensource.com
> http://lists.xensource.com/xen-devel
>
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2005-05-03 9:23 xen_blk driver Håvard Bjerke
2005-05-03 9:35 ` Harry Butterworth
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