Re: [Wg-test-framework] irc transcript

[Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>]

Don K and I had an irc conversation yesterday which I wanted to make a
note of for my own records etc.

Don K has set up newcastle's tagged networking port and it is working.

Ian.

17:14 <Diziet> kaitou_: Hi.  I have to go catch a train now.  I'll be back 
               online here in ~30 mins but I will see whatever you write.
17:23 <kaitou_> Diziet: OK.  Should private chat when you get back so we don't 
                bore everyone here.
17:47 <Diziet> kaitou_: Hi.
17:47 <Diziet> No, this channel is fine.
17:47 <Diziet> Can you remind me of the servers' public ip addresses ?  Do you 
               mind if I have a poke round ?
17:50 <kaitou_> No, not at all. You can get to them either via e.g. 
                newcastle.test-lab.xenproject.org or newcastle.krl.com
17:52 <kaitou_> OK, maybe not on the xenproject.org domain, yet.
17:53 <Diziet> I will sort out the xenproject.org DNS when I'm not on a train 
               :-)
17:53  * Diziet looks at /etc/network/interfaces
17:53 <Diziet> I don't see any entry there for the internal network card.
17:53 <Diziet> s/card/port
17:54 <Diziet> Also are we really using iptables-save ?  I don't think that's a 
               very good idea.  Even the iptables package author doesn't like 
               it...
17:54 <kaitou_> Not yet. They weren't set up when the machine was built and we 
                didn't have any network info for eth1 at that time.
17:55 <kaitou_> No. I've just started working on the iptables stuff.
17:56 <kaitou_> I suspect the iptables stuff you found is what the default 
                install left us.
17:56 <Diziet> Paul said you were having trouble setting up the internal port 
               to be taggedba Eport.
17:56 <Diziet> What have you tried ?
17:56 <Diziet> (btw I'm on a train so may have lag)
17:57 <kaitou_> Haven't tried tagging it, yet. Had only set up doubled addrs on 
                eth1 and eth1:1.
17:58 <kaitou_> Then, I don't have the tag info to use for it, anyway.
17:59 <Diziet> (OK I do have very bad lag)
17:59 <kaitou_> No hurry. Whenever you are ready.
18:01 <Diziet> tag info> Right, that was going to be my next question - what 
               are the two vlan tags.
18:01 <kaitou_> No idea. I'll ping Chris to find out.
18:02 <Diziet> doubled addrs on eth1 and eth1:1 won't work.  You need to put in 
               the vlan tag.
18:02 <Diziet> See interfaces(5)
18:02 <Diziet> Also, these internal interfaces need to be enslaved to bridges.
18:02 <kaitou_> Gotcha.
18:02 <Diziet> See also bridge-utils-interfaces(5) in the bridge-utils package 
               which will have to be installed.
18:03 <Diziet> And you'll want to install the vlan package of course.
18:03 <Diziet> See vlan-interfaces(5)
18:03 <Diziet> The docs for all this are pretty good.
18:03 <Diziet> If you get stuck let me know and I will do it.
18:03 <Diziet> I will do it> When we know the lvlan tag numbers, that is :-).
18:12 <kaitou_> As soon as I find out, I'll do a  non-bridged test using the 
                servers to see if they can at least talk to each other.
18:12 <kaitou_> In the meantime, did you see my mail regarding the disk access 
                issue?
18:19 <Diziet> I did see the mail.  Let me read it again.
18:19 <Diziet> (My access is pretty poor to my email right now, so bear with 
               me.)
18:21 <kaitou_> No rush. When you get home will be fine.
18:22 <Diziet> I don't think the xl dmesg information is at all relevant.
18:22 <Diziet> What particular file can't you write to ?
18:22 <kaitou_> I can resend it with the xl config.
18:22 <kaitou_> /dev/mapper/dm-3 (for example)
18:22 <Diziet> Also, did you know about the `xen-tools' package ?
18:23 <Diziet> It has a tool called xen-create-image which is an easy way to 
               set up VMs.
18:23 <Diziet> What command did you type anud what exactly was the error ?
18:23 <kaitou_> I had noted that, but never have tried using it.
18:23 <kaitou_> xl create infra.cfg
18:23 <Diziet> I recommend it.  Much easier than pratting about with d-i.
18:23 <Diziet> Totally noninteractive and copies a lot of relevant stuff from 
               the dom0 as you would hope.
18:24 <kaitou_> Will give it a go.
18:24 <Diziet> Where is "infra.cfg" ?
18:24 <Diziet> I would have expeccted it in /etc/xen on newcastle.
18:24 <kaitou_> But I suspect I'll have a similar problem.
18:24 <kaitou_> It failed when it tried to write out the disk structure.
18:25 <kaitou_> ~dkoch/cfg
18:30 <Diziet> Mind if I try the xl create ?
18:31 <kaitou_> Go for it.
18:31 <Diziet> Wait a moment, this is still booting off the iso.
18:33 <kaitou_> Ah, yes. And if you don't have a vncviewer...
18:34 <kaitou_> I never got past booting off the ISO. It died during disk setup.
18:35 <Diziet> I'll look at this tomorrow.  I'm about to arrive here.  I'll 
               check back later if you have anything quick
18:37 <Diziet> ttfn
18:37 <kaitou_> tt!
20:28 <kaitou_> Diziet: got vlans working. (yay) (I think)
21:06 <Diziet> kaitou_: Excellent.  Just went and had a look.  LGTM.
21:09 <kaitou_> Now looking at the 2^16 options for xen-create-image.
21:09 <Diziet> It's quite copious, indeed.
21:09 <kaitou_> (Seems I used this a couple of times years ago.)
21:09 <Diziet> Heh.
21:09 <Diziet> If you want to suggest a command line here or by email I could 
               review it.
21:10 <Diziet> I'm here only briefly right now but I can check back in an hour 
               or two.
21:10 <kaitou_> I'll be heading out in an hour. I may create a test machine to 
                see if it works the way I think it will and blow it away.
21:10 <Diziet> Right, makes sense.
21:11 <Diziet> Save the rune you use :-).
21:11 <kaitou_> QuestIon: does the dhcp VM need to be visible on the test vlan?
21:12 <Diziet> Yes, it'll need to be the dhcp server for the test vlan as well 
               as for the infra vlan.
21:12 <kaitou_> Thought so. It's marked as only being on infra.
21:12 <Diziet> I see plumbing.txt has it only on infra.  That's wrong, then.  
               Do update it.
21:13 <Diziet> Um, actually, I think only Don Slutz has push access to the git 
               right now.
21:13 <Diziet> Email me your ssh public key and preferred username and I'll set 
               that up.
21:13 <kaitou_> Any other machines that need to be on test that aren't already 
                marked? (ditto for infra)
21:13 <kaitou_> OK, to citrix or chiark?
21:14 <Diziet> citrix pleasse
21:14 <Diziet> I think all the other machines that need to be visible to test 
               boxes will get routed, rather than actually being on both vlans.
21:14 <Diziet> Train arriving again.
21:14 <Diziet> So must go now.
21:14 <Diziet> Back later.
21:14 <Diziet> TTFN
21:14 <kaitou_> OK. thanks

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