[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH RFC 2/5] blkif: document new blkback path xenstore node
On Fri, May 22, 2015 at 11:18:55AM +0200, Roger Pau Monne wrote: > FreeBSD blkback uses the 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. > > Signed-off-by: Roger Pau Monné <roger.pau@xxxxxxxxxx> > Cc: Ian Campbell <ian.campbell@xxxxxxxxxx> > Cc: Ian Jackson <ian.jackson@xxxxxxxxxxxxx> > Cc: Jan Beulich <jbeulich@xxxxxxxx> > Cc: Tim Deegan <tim@xxxxxxx> > --- > xen/include/public/io/blkif.h | 12 ++++++++++-- > 1 file changed, 10 insertions(+), 2 deletions(-) > > diff --git a/xen/include/public/io/blkif.h b/xen/include/public/io/blkif.h > index 6baf7fb..b1e2245 100644 > --- a/xen/include/public/io/blkif.h > +++ b/xen/include/public/io/blkif.h > @@ -89,8 +89,15 @@ > * Values: string > * > * A free formatted string providing sufficient information for the > - * backend driver to open the backing device. (e.g. the path to the > - * file or block device representing the backing store.) > + * hotplug script to attach the device and provide a suitable > + * handler (ie: a block device) for blkback to use. > + * > + * path > + * Values: string > + * Notes: 11 > + * > + * A free formatted string that contains the path to the backing device > + * for this blkback instance. Why can't FreeBSD use the same "physical-device" node as Linux and NetBSD do? AIUI from reading this doc "physical-device" node already covers both "file" and "block device", i.e. it's a superset of the proposed "path" node here. Wei. > * > * type > * Values: "file", "phy", "tap" > @@ -385,6 +392,7 @@ > * than RING_SIZE * BLKIF_MAX_SEGMENTS_PER_REQUEST. > *(10) The discard-secure property may be present and will be set to 1 if the > * backing device supports secure discard. > + *(11) This node is only present on FreeBSD. > */ > > /* > -- > 1.9.5 (Apple Git-50.3) > > > _______________________________________________ > Xen-devel mailing list > Xen-devel@xxxxxxxxxxxxx > http://lists.xen.org/xen-devel _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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