Modern PV on HVM kernels map hd* devices to xvd*. Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> diff -r 137ad3347504 docs/misc/vbd-interface.txt --- a/docs/misc/vbd-interface.txt Mon Feb 14 17:02:55 2011 +0000 +++ b/docs/misc/vbd-interface.txt Wed Feb 16 16:57:46 2011 +0000 @@ -116,7 +116,7 @@ For Linux HVM guests using PV-on-HVM dri For Linux HVM guests using PV-on-HVM drivers, users are recommended to supply as few hd* devices as possible and use pure xvd* devices for the rest. Modern PV-on-HVM drivers will map the hd* devices to -/dev/xvdHDa etc. +/dev/xvd* etc. Some Linux HVM guests with broken PV-on-HVM drivers do not cope properly if both hda and hdc are supplied, nor with both hda and xvda, _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Stefano Stabellini
2011-Feb-16 17:05 UTC
Re: [Xen-devel] [PATCH] fix vbd-interface document
On Wed, 16 Feb 2011, Stefano Stabellini wrote:> Modern PV on HVM kernels map hd* devices to xvd*. > > Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> > > diff -r 137ad3347504 docs/misc/vbd-interface.txt > --- a/docs/misc/vbd-interface.txt Mon Feb 14 17:02:55 2011 +0000 > +++ b/docs/misc/vbd-interface.txt Wed Feb 16 16:57:46 2011 +0000 > @@ -116,7 +116,7 @@ For Linux HVM guests using PV-on-HVM dri > For Linux HVM guests using PV-on-HVM drivers, users are recommended to > supply as few hd* devices as possible and use pure xvd* devices for > the rest. Modern PV-on-HVM drivers will map the hd* devices to > -/dev/xvdHDa etc. > +/dev/xvd* etc.Sorry I sent it too quicky. It should be: +/dev/xvda etc. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
On Wed, 2011-02-16 at 17:02 +0000, Stefano Stabellini wrote:> Modern PV on HVM kernels map hd* devices to xvd*. > > Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> > > diff -r 137ad3347504 docs/misc/vbd-interface.txt > --- a/docs/misc/vbd-interface.txt Mon Feb 14 17:02:55 2011 +0000 > +++ b/docs/misc/vbd-interface.txt Wed Feb 16 16:57:46 2011 +0000 > @@ -116,7 +116,7 @@ For Linux HVM guests using PV-on-HVM dri > For Linux HVM guests using PV-on-HVM drivers, users are recommended to > supply as few hd* devices as possible and use pure xvd* devices for > the rest. Modern PV-on-HVM drivers will map the hd* devices to > -/dev/xvdHDa etc. > +/dev/xvd* etc.xvdHDa was a proposal which never actually saw the light of day, right? Otherwise both need mentioning... _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Stefano Stabellini
2011-Feb-16 17:16 UTC
Re: [Xen-devel] [PATCH] fix vbd-interface document
On Wed, 16 Feb 2011, Ian Campbell wrote:> On Wed, 2011-02-16 at 17:02 +0000, Stefano Stabellini wrote: > > Modern PV on HVM kernels map hd* devices to xvd*. > > > > Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> > > > > diff -r 137ad3347504 docs/misc/vbd-interface.txt > > --- a/docs/misc/vbd-interface.txt Mon Feb 14 17:02:55 2011 +0000 > > +++ b/docs/misc/vbd-interface.txt Wed Feb 16 16:57:46 2011 +0000 > > @@ -116,7 +116,7 @@ For Linux HVM guests using PV-on-HVM dri > > For Linux HVM guests using PV-on-HVM drivers, users are recommended to > > supply as few hd* devices as possible and use pure xvd* devices for > > the rest. Modern PV-on-HVM drivers will map the hd* devices to > > -/dev/xvdHDa etc. > > +/dev/xvd* etc. > > xvdHDa was a proposal which never actually saw the light of day, right? >right _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
On Wed, 2011-02-16 at 17:16 +0000, Stefano Stabellini wrote:> On Wed, 16 Feb 2011, Ian Campbell wrote: > > On Wed, 2011-02-16 at 17:02 +0000, Stefano Stabellini wrote: > > > Modern PV on HVM kernels map hd* devices to xvd*. > > > > > > Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> > > > > > > diff -r 137ad3347504 docs/misc/vbd-interface.txt > > > --- a/docs/misc/vbd-interface.txt Mon Feb 14 17:02:55 2011 +0000 > > > +++ b/docs/misc/vbd-interface.txt Wed Feb 16 16:57:46 2011 +0000 > > > @@ -116,7 +116,7 @@ For Linux HVM guests using PV-on-HVM dri > > > For Linux HVM guests using PV-on-HVM drivers, users are recommended to > > > supply as few hd* devices as possible and use pure xvd* devices for > > > the rest. Modern PV-on-HVM drivers will map the hd* devices to > > > -/dev/xvdHDa etc. > > > +/dev/xvd* etc. > > > > xvdHDa was a proposal which never actually saw the light of day, right? > > > > rightGood, then: Acked-by: Ian Campbell <ian.campbell@citrix.com> _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Stefano Stabellini writes ("Re: [Xen-devel] [PATCH] fix vbd-interface document"):> On Wed, 16 Feb 2011, Stefano Stabellini wrote: > > diff -r 137ad3347504 docs/misc/vbd-interface.txt > > --- a/docs/misc/vbd-interface.txt Mon Feb 14 17:02:55 2011 +0000 > > +++ b/docs/misc/vbd-interface.txt Wed Feb 16 16:57:46 2011 +0000 > > @@ -116,7 +116,7 @@ For Linux HVM guests using PV-on-HVM dri > > For Linux HVM guests using PV-on-HVM drivers, users are recommended to > > supply as few hd* devices as possible and use pure xvd* devices for > > the rest. Modern PV-on-HVM drivers will map the hd* devices to > > -/dev/xvdHDa etc. > > +/dev/xvd* etc. > > Sorry I sent it too quicky. It should be: > > +/dev/xvda etc.I think this could do with some additional explanation and an adjustment to the recommended setup. How about this. Ian. diff --git a/docs/misc/vbd-interface.txt b/docs/misc/vbd-interface.txt index ce5ce4f..d97c458 100644 --- a/docs/misc/vbd-interface.txt +++ b/docs/misc/vbd-interface.txt @@ -114,9 +114,10 @@ only. Modern PV drivers will map these to identically-named devices in the guest. For Linux HVM guests using PV-on-HVM drivers, users are recommended to -supply as few hd* devices as possible and use pure xvd* devices for -the rest. Modern PV-on-HVM drivers will map the hd* devices to -/dev/xvdHDa etc. +supply as few hd* devices as possible, and for the rest of the disks, +to use pure xvd* devices starting at xvde. Modern PV-on-HVM drivers +will map provided hd* devices to the corresponding /dev/xvd* (for +example, hda is presented also as /dev/xvda). Some Linux HVM guests with broken PV-on-HVM drivers do not cope properly if both hda and hdc are supplied, nor with both hda and xvda, _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Stefano Stabellini
2011-Feb-17 18:38 UTC
Re: [Xen-devel] [PATCH] fix vbd-interface document
On Thu, 17 Feb 2011, Ian Jackson wrote:> Stefano Stabellini writes ("Re: [Xen-devel] [PATCH] fix vbd-interface document"): > > On Wed, 16 Feb 2011, Stefano Stabellini wrote: > > > diff -r 137ad3347504 docs/misc/vbd-interface.txt > > > --- a/docs/misc/vbd-interface.txt Mon Feb 14 17:02:55 2011 +0000 > > > +++ b/docs/misc/vbd-interface.txt Wed Feb 16 16:57:46 2011 +0000 > > > @@ -116,7 +116,7 @@ For Linux HVM guests using PV-on-HVM dri > > > For Linux HVM guests using PV-on-HVM drivers, users are recommended to > > > supply as few hd* devices as possible and use pure xvd* devices for > > > the rest. Modern PV-on-HVM drivers will map the hd* devices to > > > -/dev/xvdHDa etc. > > > +/dev/xvd* etc. > > > > Sorry I sent it too quicky. It should be: > > > > +/dev/xvda etc. > > I think this could do with some additional explanation and an > adjustment to the recommended setup. How about this. >that''s a good idea _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Stefano Stabellini writes ("Re: [Xen-devel] [PATCH] fix vbd-interface document"):> On Thu, 17 Feb 2011, Ian Jackson wrote: > > I think this could do with some additional explanation and an > > adjustment to the recommended setup. How about this. > > > > that''s a good ideaThanks, I''ve applied it. Ian. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel