blkif: document how FreeBSD uses the physical-device backend node
authorRoger Pau Monne <roger.pau@citrix.com>
Thu, 31 Mar 2016 12:56:36 +0000 (14:56 +0200)
committerIan Jackson <Ian.Jackson@eu.citrix.com>
Wed, 6 Apr 2016 14:50:45 +0000 (15:50 +0100)
commitfab1d32c34213991cae93fdbcbb5338e225f8323
tree8895144e0a40c404884cfbc9e71fc7cc0f80da7a
parent671361d40526cff052b97bfe16dc901d851899f0
blkif: document how FreeBSD uses the physical-device backend node

FreeBSD blkback uses the physical-device-path xenstore node in order to
fetch the path to the underlying backing storage (either a block device or
raw image). This node is set by the hotplug scripts. Also clarify the usage
of the physical-device node.

Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Reviewed-by: George Dunlap <george.dunlap@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
xen/include/public/io/blkif.h