On Mon, 2014-01-13 at 13:16 +0000, Jan Beulich wrote: > >>> On 13.01.14 at 14:00, Ian Campbell <ian.campb...@citrix.com> wrote: > > On Mon, 2014-01-13 at 12:34 +0000, Jan Beulich wrote: > >> >>> On 13.01.14 at 13:01, Olaf Hering <o...@aepfle.de> wrote: > >> > On Mon, Jan 13, Jan Beulich wrote: > >> > > >> >> You can't do this in one go - the first two and the last one may be > >> >> set independently (and are independent in their meaning), and > >> >> hence need to be queried independently (xenbus_gather() fails > >> >> on the first absent value). > >> > > >> > Yes, thats the purpose. Since the properties are required its an all or > >> > nothing thing. If they are truly optional then blkif.h should be updated > >> > to say that. > >> > >> They _are_ optional. > > > > But is it true that either they are all present or they are all absent? > > No, it's not. discard-secure is independent of the other two (but > those other two are tied together).
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