From mboxrd@z Thu Jan 1 00:00:00 1970 From: Niraj Tolia Subject: Re: Re: almost working Date: Tue, 13 Jul 2004 16:00:11 +0100 Sender: xen-devel-admin@lists.sourceforge.net Message-ID: <7e45e2ac0407130800610e9a06@mail.gmail.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Errors-To: xen-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: Keir Fraser Cc: Ian Pratt , James Harper , "xen-devel@lists.sourceforge.net" List-Id: xen-devel@lists.xenproject.org On Tue, 06 Jul 2004 17:11:04 +0100, Keir Fraser wrote: > > > Not good. I think xend is getting more robust over time. > > > > I have seen a number of ''heisenbugs" with xend. They especially occur > > when I stop xend and start it again. Every now and then a 'xend start' > > does nothing and sends no output to console. Commands such as 'xm > > list' will give a 'Connection refused' error. A 'xend stop' followed > > by a 'xend start' usually fixes this but there have been a few times > > where I have had to repeat the cycle a couple of times. > > > > Also, sometimes after a reboot, a domain creation just fails and the > > 'xm create' command does not return. There are no error messages from > > xend. Even though I suspect that things are hosed at this point in > > time, a 'xend stop' works. However xend will not startup again and > > gives a 'IOError: [Errno 16] Device or resource busy' error. The > > problem cannot be reproduced as the same create command works after > > another reboot. > > I think many people had been seeing problems of this ilk, so you will > probably be delighted to hear that these bugs have been squashed by > today's checkins. > > It was a combination of a simple stupid bug in the device-driver code, > coupled with faulty error handling in xend. > Just FYI, I still see most of the above bugs. Running the latest and greatest. BTW what has the start_trace option for xend been replaced by? Niraj > -- Keir > ------------------------------------------------------- This SF.Net email sponsored by Black Hat Briefings & Training. Attend Black Hat Briefings & Training, Las Vegas July 24-29 - digital self defense, top technical experts, no vendor pitches, unmatched networking opportunities. Visit www.blackhat.com