TheGrebs.com:IRC Logs:#xen:2007:01:24

---	Log	opened Wed Jan 24 00:00:49 2007
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06:02	<nantes_geek>	hi evreybody
06:03	<nantes_geek>	s/ery
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11:32	<nantes_geek>	hi everybody
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11:33	<nantes_geek>	i have a problem with my kernel domU, my eth0 is transforming in eth1 in all domU, but there 's only one vif in my configuration file
11:33	<nantes_geek>	anybody have an idea and can help me ? please ?
11:34	<icblenke>	anyone else sense a weird pattern forming here?
11:36	<nantes_geek>	icblenke: is my eht1 a part of your weird pattern ?
11:36	<icblenke>	someone else mentioned eth0/eth1 "swapping" for no reason some percentage of the time with 3.0.4
11:37	<nantes_geek>	oki
11:37	<nantes_geek>	and have you an idea how to make a big hack to solve that ?
11:38	<icblenke>	nope.
11:38	<nantes_geek>	snif
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11:43	<icblenke>	I've never seen that behavior myself.
11:44	<nantes_geek>	i feel it's possible it's a udev problem
11:45	<icblenke>	and I use hotplug, not udev, so I suppose that is possible.
11:46	<nantes_geek>	do you know where i need change this option in my kernel domU ?
11:47	<icblenke>	it's not in your domU, it's in your dom0. and you either run udev or hotplug, depending on the age of your distribution (udev is rapidly replacing hotplug).
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11:49	<nantes_geek>	i use a mandriva 2007 ... but i have this problem only since i use xen 3.03
11:57	<KriP>	Is there a good way to export data similar to 'xm top' using snmp from dom0?
11:59	<icblenke>	xenbaked can give you raw stats that you can collect
11:59	<icblenke>	xenmon is a good example of a python wrapper that can use it.
11:59	<KriP>	Thanks, I'll take a look at it :)
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12:14	<KriP>	Hmm. I seem to be missing some xen-dev package needed to compile xenbaked. Did debian forget to distribute those?
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13:34	<nantes_geek>	icblenke: i just resolve the problem of swap with eth0 and eth1 in a domU
13:34	<icblenke>	oh? what was up?
13:35	<nantes_geek>	icblenke: the problem comes from the bridge
13:35	<nantes_geek>	icblenke: now i can solve it manually , i'm looking for an hack ;)
13:35	<nantes_geek>	icblenke: to do this auto and to explain exactly when it comes
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13:37	<icblenke>	the last person in here reporting it had a workaround that used a statically assigned MAC address trick.
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13:52	<nantes_geek>	icblenke: it seems to have a verification in the xen script to prevent mac conflict, when there's a conflict of mac he generate a new vif/eth with an auto-generate mac
13:53	<nantes_geek>	and it put the conflict eth to br0 and the newly generate mac/eth in the xenbr0
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14:45	<movement>	danp1: there?
14:45	<danp1>	movement: yep
14:46	<movement>	have you given any thought to getting xc_linux_save/restore error messages up and out to xm's stderr?
14:48	<danp1>	oh that's the evil bit where we fork a separate process isn't it
14:48	<danp1>	personally i'd just move it all back in process - if it causes crashes, then it has to be fixed regardless
14:48	<movement>	I'm fixing save now to notice when a domain goes away
14:48	<movement>	danp1: yeah
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14:49	<danp1>	not sure whether the HVM save/restore stuff complicates that
14:49	<movement>	danp1: I've never seen it crash yet actually
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16:04	<aya>	when i run xen i get Kernel panic ... unknown-block(3,1) what could be the problem?
16:05	<hollisb>	sounds like you're missing an IDE driver
16:05	<hollisb>	or if that's a domU, the blkfront driver
16:06	<aya>	i believe it is the domU (after typing xm create -c .....sxp)
16:07	<murb>	that is hda1
16:07	<hollisb>	yup, that's a domU
16:08	<hollisb>	so you need to make sure your domU kernel has the blkfront driver
16:08	<aya>	and how do i install them (i am using debian)
16:08	<icblenke>	either in the kernel, or loaded in your initrd.
16:08	<murb>	aya: what happens if you say xvda1 instead of hda1?
16:09	<aya>	same
16:09	<aya>	plus please append a correct "root=" boot option
16:09	<murb>	aya: did you change the root=?
16:10	<aya>	yes (did you not tell me to change the root= option)
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16:16	<aya>	where do i get blkfront fro?
16:17	<aya>	fro = from
16:18	<icblenke>	it should have been compiled with your kernel.
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16:22	<aya>	i did not compile with my kernel, because i downloaded it via "apt-get"
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16:29	<murb>	aya: what distribution are you using?
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16:30	<icblenke>	<aya> and how do i install them (i am using debian)
16:30	<aya>	etch
16:31	<icblenke>	if you're not running etch with 2.6.18 or later, update first.
16:31	<aya>	kernel 2.6.18-3-686 and vmlinuz-2.6.18-3-xen-686
16:32	<icblenke>	are you specifying a ramdisk= line for the initrd?
16:32	<aya>	no
16:33	<icblenke>	sounds like a good first step to me.
16:35	<aya>	now i get a "kernel panic - not ... attempted to kill init!"
16:37	<icblenke>	does your kernel log show blkfront loading and finding the vbd disk? do you use xvda1 in both your disk line and in your root= line?
16:38	<icblenke>	and what did you do to build your domU's filesystem block device?
16:42	<aya>	i used "dd if=/dev/zero of=/vserver/images/vm_base.img bs=1024k count=1000" then "mkfs.ext3 /vserver/images/vm_base.img" to convert the filesystem
16:43	<aya>	and where do i have to change "hda1" to "xvda1" ?
16:46	<icblenke>	how did you fill it?
16:46	<icblenke>	did you mount it and debootstrap into it?
16:46	<aya>	yes
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16:47	<icblenke>	your xm config file in /etc/xen/HOSTNAME needs a disk=['file:/vserver/images/vm_base.img,xvda1,w"] and a root="xvda1 ro"
16:48	<aya>	aha
16:48	<icblenke>	er, s/'/"/g
16:50	<aya>	what do you mean by s/'/"/g ?
16:53	<aya>	yes it is up
16:53	<aya>	thank you
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17:00	<demon>	has anything happened as far as either (a) allowing non-PAE-aware domU kernel images to run on a PAE-enabled hypervisor, or (b) modifying NetBSD to be aware of PAE?
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---	Log	closed Thu Jan 25 00:00:38 2007