TheGrebs.com:IRC Logs:#xen:2007:03:14

---	Log	opened Wed Mar 14 00:00:12 2007
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14:10	<Flimzy>	I have a Dom0 that has semi-frozen. I started a domU, and the vif did not initialize properly, so I exited the domU, and then it never exited, and xend died. I can restart xend manually, but many things continue to freeze--sudo doesn't work, when I log out of ssh, it just hangs...
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14:10	<Flimzy>	This happened on another machine a few days ago, so I rebooted it, and I haven't been able to log into that machine again since. So I'm afraid to reboot this machine now
14:10	<Flimzy>	Any idea what's going on?
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14:12	<Flimzy>	Oh, and the domU's appear to be non-responsive as well
14:12	<Flimzy>	(over the ethernet bridge--xm console still works)
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14:15	<Flimzy>	ugh
14:15	<Flimzy>	now sshd apparantly died :/
14:16	<icblenke>	once xend dies, the game is over.
14:17	<icblenke>	xend shouldn't die. if it does, you're hosed. reboot.
14:17	<Flimzy>	Well, I tried rebooting
14:17	<Flimzy>	and then the machine became unreachable
14:18	<Flimzy>	(for the one that happened the other day)
14:18	<Flimzy>	didn't even have the chance to reboot this one
14:18	<Flimzy>	and it's unreachable
14:18	<Flimzy>	What causes xend to become unsuable?
14:18	<Flimzy>	or rather, what can cause it to die?
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14:37	<icblenke>	sync; sync; sync; reboot -f
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14:45	<Flimzy>	You think it's just a sync problem? It doesn't seem that way
14:46	<Flimzy>	at least not on the reboot
14:46	<Flimzy>	It at least partially reboots
14:46	<Flimzy>	b/c I can ping it
14:46	<Flimzy>	but it doesn't respond to ssh request
14:46	<Flimzy>	s
14:50	<Flimzy>	I'm seeing reports of seemingly identical behavior as far back as Aug 2004
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14:57	<Flimzy>	not sure if it matters, but both machines with the problem were amd64 machines
14:58	<Flimzy>	Hmm... on the most recent crash, I realized I had set the same MAC address on two domU's, and was changing the 2nd one when the crash occured
14:58	<Flimzy>	And was fooling with MAC's on th other one, too
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14:59	<Flimzy>	is it possible that a MAC address collision would cause xend to crash?
15:00	<brendan>	it probably explains why the bridge stopped working
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15:00	<Flimzy>	yeah... does it explain the other oddities?
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15:01	<Flimzy>	I see a report from Nov of 06 on the dev list of problems using two bridges in one domU
15:01	<Flimzy>	that's exactly what I was trying to make work when the first dom0 died
15:01	<Flimzy>	Makes me think both of my problems are related to bridging problems
15:01	<brendan>	I dunno, maybe.
15:01	<brendan>	I restart xend all the time, personally
15:02	<Flimzy>	due to problems, or just for fun? hehe
15:02	<brendan>	usually because I'm hacking on it
15:02	<Flimzy>	ah
15:03	<Flimzy>	Well I'm thinking the "solution" may be to be extra-careful with my bridge configs
15:04	<Flimzy>	It would be nice if there was an automated way to check the MAC's or something before starting the domU's, to prevent this sort of thing. maybe I'll write a script to do that.
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15:08	<icblenke>	from what I've been told, xend fires off xenstored, which must never be restarted as any "watches" would be lost
15:09	<icblenke>	everytime I've restarted xend, I've ended up unable to communicate with my domUs.
15:09	<icblenke>	that may be a side effect of how I built and run it though.
15:09	<Flimzy>	Well your experience would so far coincide with mine
15:10	<PoMEGA>	does domain 0 support USB devices (like USB printers) ?
15:10	<Flimzy>	so I probably get to drive to Kansas City tomorow to reboot 2 xen machines
15:10	<icblenke>	PoMEGA: yes, inasmuch as you can get any USB printer to work with linux and cups.
15:11	<brendan>	restarting xenstored is a different story. But xend doesn't restart it if it's already running
15:11	<PoMEGA>	icblenke, thanks ; I will try one that I know works
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15:33	<claviola>	Hi, I'm getting 'Error: (22, 'Invalid argument')' when trying to run "xm create" with a sample config for ttylinux. Any tips?
15:34	<icblenke>	use xen 3.0.4, which will give you more debugging info about your problem.
15:34	<claviola>	hm, I see. yeah, the version of xen on the distribution I'm running is 3.0.3
15:35	<claviola>	still, there's probably a way to figure out what I'm doing wrong, right? my config is pretty clean, but xm log's output only includes a python backtrace that shows it has failed to init the domain
15:37	<claviola>	er, oops, my bad. I did notice an error with my config. doh
15:37	<claviola>	still, ttylinux gives me a nasty error when it tries to boot up
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---	Log	closed Thu Mar 15 00:00:54 2007