From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Cooper Subject: Re: [test day] Windows SBS 2011 random hang and resource utiluization on 4.4-rc2 and rc3 Date: Thu, 6 Feb 2014 18:12:11 +0000 Message-ID: <52F3D07B.9070002@citrix.com> References: <52F37A05020000260003A5AC@hibbing.edu> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <52F37A05020000260003A5AC@hibbing.edu> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Don Brearley Cc: xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org On 06/02/14 18:03, Don Brearley wrote: > Hello, > > > I know it's not officially "test day" but I've been toying with Xen 4.4-rc2 and -rc3 and I have several successful linux > PV guests running on 3.13.1. Works fantastic. > > > However, I have an SBS 2011 64bit HVM installation (no GPLPV drivers) and I routinely get a complete hang. The VM > goes 'stateless' in 'xl list' (shows the domain state as ------). Cannot access via RDP, cannot access via VNC, cannot > ping, etc. Just totally dead, yet the VM "lives". Issing 'xl shutdown -F domain' does not kill it, I have to use > "destroy" to remove the domain. I didnt install GPLPV because I didnt see they were supported for SBS 2011. > > > No errors in the xen or qemu logs, nothing in the event log, nothing in dmesg/messages on dom0. > > > I can't seem to find anything to trigger it... it just, happens, seemingly at random. > > > "xl top" shows the domain as using 200% CPU when this happens.... in one case I left the VM running like that > overnight, and returned, and it had come up to 300% utilization. > > > The domain sits on a physical disk (/dev/sdd) which is replicated via DRBD to another server. > > > Any hints? Suggestions? Boot with "guest_loglvl=all" on the Xen command line. `xl debug-keys q` and `xl dmesg` to see what is reported from Xen as far as the guest is concerned `xen-hvmctx $domid` to see the architectural state of it. Both be useful as a starting point. ~Andrew