Re: xen-4.5 and -current/amd64

[Patrick Welche <prlw1%cam.ac.uk@localhost>]

On Fri, Jul 31, 2015 at 12:42:02PM +0100, Patrick Welche wrote:
> On Fri, Jul 31, 2015 at 07:29:07AM -0400, Gary Duzan wrote:
> > In Message <20150731110707.GB3262@quark>,
> >    Patrick Welche <prlw1%cam.ac.uk@localhost>wrote:
> > 
> > =>The disk line is either:
> > =>
> > =>disk = ['file:/scratch/disk.img,0x1,w'] <--- working
> > =>
> > =>or
> > =>
> > =>disk = ['phy:/dev/rraid6a,0x1,w']       <--- broken
> > =>
> > =>
> > =>(also tried with same results:
> > =>disk = ['format=raw, vdev=0x1, access=rw, target=/dev/rraid6a']       BAD
> > =>disk = ['format=raw, vdev=0x1, access=rw, target=/scratch/disk.img']  OK
> > =>)
> > 
> >    I'm using logical volumes, but it should be similar:
> > 
> > disk = [ "/dev/mapper/vg0-app1--root,raw,xvda,backendtype=phy", "/dev/mapper/vg1-media,raw,xvdb,backendtype=phy" ]
> > 
> > So maybe,
> > 
> > disk = [ "/dev/raid6a,raw,xvda,backendtype=phy" ]
> 
> Still no joy... however:
> 
> xbdback backend/vbd/1/51712: can't VOP_OPEN device 0x1260: 16

... because as opposed to in the previous tests, having just quickly
booted, I hadn't unmounted /scratch - all nicely explained in xbdback(4).

So,

> disk = [ "/dev/raid6a,raw,xvda,backendtype=phy" ]

works, and that syntax also complains if one tries the character
device rraid6a, which cuts down on the permutations.

Thanks!

Patrick