From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ian Campbell Subject: Re: [OSSTEST PATCH 13/26] selecthost: Support nested hosts (guests which are also hosts) Date: Mon, 28 Sep 2015 11:10:01 +0100 Message-ID: <1443435001.25250.239.camel@citrix.com> References: <1443181028-22705-1-git-send-email-ian.jackson@eu.citrix.com> <1443208522-24905-1-git-send-email-ian.jackson@eu.citrix.com> <1443208522-24905-5-git-send-email-ian.jackson@eu.citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail6.bemta14.messagelabs.com ([193.109.254.103]) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1ZgVOM-0006TI-MB for xen-devel@lists.xenproject.org; Mon, 28 Sep 2015 10:10:42 +0000 In-Reply-To: <1443208522-24905-5-git-send-email-ian.jackson@eu.citrix.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Ian Jackson , xen-devel@lists.xenproject.org Cc: Robert Ho List-Id: xen-devel@lists.xenproject.org On Fri, 2015-09-25 at 20:15 +0100, Ian Jackson wrote: > We introduce a new syntax: instead of a hostname (which might appear > in a command line argument to a ts-* script and hence be passed to > selecthost, or which might be in a runvar), we now support > :. > > Such `hosts' (let us refer to such a thing as an L1, although in > principle further nesting may be possible) are expected to be > dynamically created. So they do not have flags and properties in the > configuration (or in an Executive instance's database). > > The IP address is determined dynamically from the leases file. If the > L1 is not running, then no IP address may be found. This is not an > error. Users of this facility will need to make sure that ts-* > scripts which are unaware of the L1's special status are only invoked > when it is known that the L1 is up and has obtained its IP address. > > `Power cycling' the L1 will be done by VM control operations in the > L0; this will come in a subsequent patch. > > `Serial access' to the L1 guest will likewise need to be done via the > console arrangements in L0. > > Signed-off-by: Ian Jackson Acked-by: Ian Campbell