On 29/08/18 11:23, Valentin Vidic wrote: > On Wed, Aug 29, 2018 at 10:43:48AM +0200, Juergen Gross wrote: >> I think this should be an action triggered by the frontend, not by dom0 >> (xen tools will always set "online" to 0 when removing a device, AFAIK). >> >> I'm not sure this is relevant, but I realized this behavior is changed >> by your patch. > > Can't find any place in xen-blkfront.c (or the rest of the kernel) where > the "online" value gets set, so it seems xen tools in dom0 is the only > thing that modifies this Xenbus node? > I think so, yes. It will be set to "1" at device creation and to "0" when removing the device, both times by Xen tools. Juergen