Re: Xen 4.5 to 4.8 upgrade

[Dima Veselov <kab00m%lich.phys.spbu.ru@localhost>]

On Thu, Feb 15, 2018 at 07:15:21AM -0800, John Nemeth wrote:
> On Feb 15,  6:11pm, Dima Veselov wrote:
> } On Thu, Dec 21, 2017 at 08:02:44PM +0100, Manuel Bouyer wrote:
> } > On Sun, Dec 17, 2017 at 07:17:22PM +0300, Dima Veselov wrote:
> } > > 
> } I did everything and Xen works as I already reported, however 
> } we found an issue: HVM-domU do not take /dev/<vg>/<lv> as hda
> } device, it take only /dev/mapper/<vg>-<lv>. PV machines are 
> } working fine with both.
> 
>      Not sure if it makes any difference and I don't recall off
> the top of my which the xbd backend driver wants, but did you try
> the raw device, i.e. /dev/<vg>/r<lv>?

This works. I am totally lost. /dev/vg/lv is a link to /dev/mapper/vg-lv,
so I thought it was a problem of links. However this works on raw device
link.

So, which device should be used, there might be a very big difference
between raw and block devices? I initially thought that block devices
should be always used and /dev/vg/lv is the most short way to write it
down.

-- 
Sincerely yours,
Dima Veselov
Physics R&D Establishment of Saint-Petersburg University