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10:24 | <Yoe> alkisg: I wanted to work on (finally) integrating that patch of yours, but I can't seem to find it anymore
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10:24 | alkisg: do you have it somewhere more accessible than in some pastebin? ;-)
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10:24 | (and sorry about the delay, got caught up in other things)
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11:00 | <alkisg> Hi Yoe, let me look it up...
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11:01 | Bug report: https://bugs.launchpad.net/ubuntu/+source/nbd/+bug/594595
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11:01 | Yoe, attachment: https://launchpadlibrarian.net/86381563/nbd-client.initrd
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11:27 | <Yoe> ah, thanks
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11:38 | <muppis> I think I need switch from nbd to nfs in Ubuntu 10.04. Any guide to do that?
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11:40 | <alkisg> muppis: https://help.ubuntu.com/community/UbuntuLTSP/LTSPWithoutNFS, but why?
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11:42 | <muppis> alkisg, because nbd connection does not survive from failover.
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11:43 | <alkisg> Ah, you got load balancing with nfs servers working?
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11:43 | *fail over
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11:43 | <muppis> Not load balacing, simple high availability.
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11:44 | <alkisg> Yeah, failover, did you get that working with nfs?
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11:45 | <muppis> nfs works fine in other purposes.
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11:45 | <alkisg> So if you have 2 nfs servers for root file system, it will automatically failover to the other server?
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11:45 | <Yoe> not quite, methinks
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11:46 | <muppis> Yes.
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11:46 | <alkisg> Yeah I don't believe that either... but if you manage it, do post about it
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11:46 | <muppis> And rootfs is synced by drbd.
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11:48 | <alkisg> DRBD is for block devices, right? So it may work with NBD, but not with NFS, correct?
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11:48 | <Yoe> alkisg: no, he's exporting a DRBD block device over NFS
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11:48 | <muppis> Yoe, yes.
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11:48 | <Yoe> if you're into that kind of thing, why not do root-on-DRBD? ;-)
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11:49 | <muppis> Too complex to add or remove clients using that.
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11:49 | <Yoe> how so?
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11:50 | <alkisg> Would root-on-DRBD be deadlock-free?
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11:51 | <muppis> DRBD nees local block device to be used.
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11:51 | <Yoe> oh, right, forgot about that
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11:51 | <muppis> And I'm still doing ltsp based kvm hosts.
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11:51 | <Yoe> in fact, that's the whole point of DRBD :-)
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11:51 | <markit> hi ppl, hi alkisg :)
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11:51 | <alkisg> Hi markit
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11:52 | <markit> alkisg: I would love to have a look at lts.conf and ltsp.conf you use with sch-script. At home I had the url of the repository and looked around at the code, but could not find anything useful
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11:52 | is it "autogenerated" by scripts or am I looking at the wrong place?
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11:52 | <alkisg> markit: our lts.conf is pretty much empty, with just about 100 lines of commented-out examples,
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11:53 | <alkisg> but we're using a config.d script in the chroot instead,
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11:53 | <markit> (I'm at work at "dinner pause" that recently I do not at the resturant, to save money, sigh)
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11:53 | <alkisg> which sets our own "Defaults" for ltsp, based on various info
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11:53 | <markit> alkisg: oh, ingenius... will it be upstream someday? :)
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11:53 | <alkisg> Nope
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11:54 | That's what WE want as defaults, not what the whole community :)
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11:54 | wants
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11:54 | E.g. we want LDM_DIRECTX=True by default
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11:54 | <markit> lol, me too
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11:54 | alkisg: do you mind send me the lts.conf file by gmail? Just to have a look
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11:54 | <alkisg> Because we prefer speed over security
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11:54 | Here's the commented-out lts.conf: http://bazaar.launchpad.net/~sch-devs/sch-scripts/trunk/view/head:/doc/sch-scripts/examples/lts.conf
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11:55 | <markit> argh, in the "doc" dir, maybe I missed it yesterday
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11:55 | <alkisg> And here's the script for our defaults: http://bazaar.launchpad.net/~sch-devs/sch-scripts/trunk/view/head:/sch-client/ltsp_config
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11:55 | <markit> oh, no I found it but did not got any new ideas
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11:55 | (mainly because of comments in greek, lol)
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11:55 | <alkisg> Hehe, use google translate
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11:56 | But the idea is that you set your defaults there, and allow teachers to override them at will
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11:56 | E.g.: # Only enable X_NUMLOCK on workstations, not on laptops
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11:56 | laptop-detect || export X_NUMLOCK="${X_NUMLOCK:-True}"
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11:56 | But if a teacher wants X_NUMLOCK=False even on workstations, he can still do that
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11:57 | <markit> during installation or can be changed also later and regenerated?
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11:57 | <alkisg> That script runs when each client boots
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11:58 | <markit> I'm trying to study your code because there are plenty of useful tips I can use with ruby also (shell commands to get config info,for instance)
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11:58 | <alkisg> And it sets our defaults, and then one can override them from lts.conf
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11:59 | <markit> btw, wondering why there are not commands options to ease the use in scripts, like grab the defautl gw IP or the interfaces available etc.. It's all a "ip grep" trick all around
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11:59 | <alkisg> Yeah that would be handy
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12:00 | Let's hope dbus makes some of those things easier
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12:00 | <markit> dbus is "low level" or has to do with graphical things?
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12:00 | I mean, in a intallation without X at all, is it present and working?
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12:00 | <alkisg> It's low level, an interprocess communications system
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12:01 | So you can use it to ask network manager about the available connections etc
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12:01 | <markit> btw, in fat clients, how is "/home" mounted? sshfs? and in fat chroot, /home entry is present (as mountpoint) but empty?
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12:01 | <alkisg> By default, sshfs is used, but we prefer to use nfs
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12:01 | <markit> I ask because official ltsp .pdf doc states that there is NO home AFAIR
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12:02 | why? and how? :)
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12:02 | <alkisg> I think the .pdf was written before the fat clients implementation
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12:02 | We just put NFS_HOME=/home in the default lts.conf
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12:02 | About the "why" part, read the fat clients page
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12:02 | !fatclients
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12:02 | <ltsp`> alkisg: fatclients: You may find some info about the Ubuntu/LTSP implementation of fat clients at https://help.ubuntu.com/community/UbuntuLTSP/FatClients
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12:02 | <markit> and it will disable sshfs automagically?
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12:02 | <alkisg> Yes
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12:03 | <markit> oh, yep, I remember that doc and that part, just thougt was a rare "problem" usually ignored (maybe does not affect KDE)
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12:04 | <alkisg> NFS is also very faster than sshfs
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12:05 | <markit> argh! better mention it in the doc
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12:05 | * markit loves "fast", but only if reliable also | |
12:05 | <alkisg> NFS is more reliable than sshfs, yeah
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12:06 | SSHFS is more secure by default, if you don't configure your NFS for security. We don't really care about that. :)
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12:06 | <markit> strange, in general is "fast, reliable, choose one"
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12:07 | btw, why have this "client side on the fly" setup, instead of entries in lts.conf with mac address of the client?
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12:07 | <alkisg> Because I don't know the mac addresses of the clients of 250 schools
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12:08 | And why would I write a 200.000 lines long lts.conf when I can do it with 100 lines of code?
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12:09 | <markit> I've not got the real working of your script... if teacher wants PC01 to have num lock, will a special config file be generated?
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12:09 | <alkisg> markit: let me describe it with an example
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12:10 | A school has 10 workstations and 10 laptops
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12:10 | Without the teacher doing anything, numlock will be on for the workstations only
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12:10 | Another example
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12:10 | Atheros cards have a bug and need special NFS options
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12:10 | They'll get those options automatically, without the teacher even knowing that he has atheros cards in his lab
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12:10 | When?
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12:11 | The options are applied when the client boots
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12:11 | <markit> but how can a pc know is a laptop?
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12:11 | <alkisg> The command is "laptop-detect"
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12:11 | Run it in your box now
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12:11 | $ laptop-detect && echo "I'm a laptop"
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12:12 | I'm a laptop
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12:12 | <markit> argh, standard command! you know SO MUCH
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12:13 | really you have to spread your school/ltsp knowledge all over the world
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12:13 | <alkisg> So, there are no configuration files being written
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12:13 | The lts.conf defaults are applied dynamically when the client boots
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12:13 | <markit> yep, very clever, is the "know yourself" part that I missed
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12:13 | (Socrates? :)
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12:13 | <alkisg> Haha
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12:14 | All people here know much about ltsp... they are the reason LTSP exists, I just got advantage of their code and got it in my schools here :)
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12:14 | <markit> alkisg: well, "put the pieces together" is very very valuable
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12:14 | you are "concentrating" a lot of knowledge, experience and theory
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12:15 | to solving schools problems
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12:16 | <markit> back to work, thanks a LOT as usual, see you :)
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12:27 | <muppis> /scripts/nfs-bottomo/ltsp line 47: Can't create /rootfs/etc/hostname: Read-only file system
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12:27 | Mind the typos.
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12:49 | <alkisg> I think that warning was fixed at some later version
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12:52 | <knipwim> alkisg: did you have a chance to look at my proposed plugin changes?
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12:52 | <alkisg> Hi knipwim
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12:52 | I saw them last night just before going to sleep, so I didn't get a good enough look
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12:53 | The organization seemed fine
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12:53 | <knipwim> :)
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12:53 | there are probably some rough edges
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12:53 | <alkisg> Let's talk about them late in some evening when vagrantc will be around too
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12:54 | <knipwim> sounds like a plan
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16:19 | <manni> Hi, I`m looking for some ltsp tweaks
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16:20 | to speed up everything a little les more
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17:58 | <Yoe> alkisg: you'll laugh at me: it took until now for me to have my root-on-nbd vm up&running again...
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17:59 | oh well
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17:59 | <alkisg> Yoe: hehe no problem, there's no hurry anyway... hurrying would make open-source-programming not fun anymore :)
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18:00 | If you need any feedback, I'll probably be around for another hour
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18:02 | <Yoe> nah, I just need to test and upload
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18:03 | at leastI hope so :-)
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20:07 | <andygraybeal> greets
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20:24 | <Yoe> "telnet security hole"
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20:26 | I thought telnet was a security hole by default
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20:28 | <andygraybeal> Yoe, hahah, i thought the same thing when i read the news.
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