From: Harry Butterworth <harry@hebutterworth.freeserve.co.uk>
To: "H嶡rd Bjerke" <Havard.Bjerke@idi.ntnu.no>
Cc: xen-devel@lists.xensource.com
Subject: Re: xen_blk driver
Date: Tue, 03 May 2005 10:35:28 +0100 [thread overview]
Message-ID: <1115112929.7563.1.camel@localhost> (raw)
In-Reply-To: <20050503092356.GJ3325@idi.ntnu.no>
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
>
prev parent reply other threads:[~2005-05-03 9:35 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-05-03 9:23 xen_blk driver Håvard Bjerke
2005-05-03 9:35 ` Harry Butterworth [this message]
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