IRC chat logs for #ltsp on irc.freenode.net (webchat)


Channel log from 30 March 2010   (all times are UTC)

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10:26
<CAN-o-SPAM>
hello #ltsp
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12:19
<Lns>
stgraber: ping?
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12:22
<Lns>
hrm, upon updating my ubu lucid chroot this morning I'm getting the following error when updating dbus : http://pastebin.com/7L3AQDbx
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12:59
<plasticdoc>
Do you know how to check, from a shell script, if a system is getting its IP data from DHCP?
13:05
<Lns>
plasticdoc: you mean whether or not an interface is getting an ip address from a dhcp server?
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13:10
<plasticdoc>
Lns: It is more if the address it got was obtained via DHCP, or some static address from /etc/network/interfaces
13:11
<Lns>
you need to do this from a script?
13:11
<vbundi>
plasticdoc: you want to know if a machine is obtaining an ip address from the DHCP server vs setting it's own?
13:14
<alkisg>
plasticdoc: run a ps -ef and see if a dhcp client daemon is running
13:15
<Lns>
alkisg: even if dhcpcd/whatever is running, wouldn't it honor /etc/network/interfaces or equiv over it?
13:15
<alkisg>
Lns, if it got an ip lease, it should have a client daemon running to renew the lease when it expires
13:15
If it didn't, there's no reason to run a daemon
13:16
So theoretically no matter if it's using networkmanager or /etc/network/interfaces, the client daemon should be there.
13:16
<Lns>
alkisg: right..but dhcp client daemon usually is installed by default (at least in ubu) either way
13:16
<plasticdoc>
I am changing the djbdns .deb package. The debian/dnscache-run.postinst has a buggy way to check if someone gets its ip from dhcp, in which case the # prepend line must be uncommented from /etc/dhcp3/dhclient.conf; or if someone is getting its ip from a static setting, in which case one must make sure that 'nameserver 127.0.0.1' is the first line in /etc/resolv.conf
13:18
<alkisg>
plasticdoc: so you only care about dhclient? If so, just check if it's running
13:18
That won't work with other clients / conffiles, though
13:18
network manager exposes a dbus interface for connections
13:18
But not all people use nm...
13:19
<Lns>
that's an understatement for this chan alkisg ;)
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13:26
<plasticdoc>
I am changing this HowTo <http://ubuntuforums.org/showthread.php?t=956864> . But, instead of compiling, I will use the recently revamped djbdns .deb packages. In changing the .deb packages I must remove the user intervention at "5. Configure & start dnscache -> If your computer uses DHCP"
13:28
I think that I will do both: always insert the local server at the first line of /etc/resolv.conf and, if finding a /etc/dhcp3/dhclient.conf file just enable the "prepend ..." line.
13:28
Thank you.
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14:15
<Lns>
Does this look sane? I just wrote it up, needs some proofreading: https://help.ubuntu.com/community/UbuntuLTSP/UseStgraberPPA
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14:20
<vbundi>
Lns: I like it
14:22
<Lns>
vbundi: thanks
14:22
I know it comes up for me quite often so its good to have it written down =)
14:23
I just need to know whether it's ok with stgraber to have it up there - I'm not sure how stable each and every update he puts up there is..but iirc he says they're ok to use for most cases
14:23
<CAN-o-SPAM_away>
Lns: good idea, just scanned it quickly
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14:24
<Lns>
CAN-o-SPAM: cool. thx =)
14:24
next up is cleaning up gnome panel applets/non-ltsp stuff for 10.04
14:25
that reboot/shutdown/ubuntu one/unified messaging spam is bugging the $*&@ outta me
14:25
I wish they'd keep that out of the default config
14:25
at least the last 2
14:26
<vbundi>
well
14:26
while I don't really like them either.. a 'built-in' messenger might be nice for some LTSP setups
14:27
<Lns>
i'm a minimalist at heart, especially when it comes to larger ltsp setups...the less on users' screens, the less can go wrong
14:27
<stgraber>
Lns: I'm fine with that, just see my note in #edubuntu. Usually I have relatively stable backports for older releases and very fresh bzr snapshots for the current dev release.
14:28
Lns: if you want something that's recent and stable (as in, in production), Revolution Linux's ppa has that
14:28
(that's what we use for all our customers on pretty much all supported releases of Ubuntu)
14:28
<Lns>
stgraber: great. Hmm, maybe i'll add the revlinux ppa to the wiki page then for that
14:29
what's the ppa url?
14:30
<stgraber>
http://ppa.launchpad.net/revolution-linux/ppa/
14:30
so that's https://launchpad.net/~revolution-linux/+archive/ppa/
14:31
<vbundi>
here's a question... I have IBM Thinkcentre's with built in speakers as clients and by default, the audio device is configured wrong... is there a way to set this permenantly for every user?
14:31
<Lns>
stgraber: thx
14:36
<vbundi>
I mean.. set it correctly for every user... it just requires going into the preferences under the gnome-panel app and selecting the proper output device
14:38
<Lns>
vbundi: if the panel app uses gconf, you can change it globally through the gconf key..
14:40
stgraber: so i see no ltsp packages for lucid in revlinux's ppa.. is that just because you're not using it yet in production?
14:45
Cool, just updated the page to reflect either PPA. https://help.ubuntu.com/community/UbuntuLTSP/UseStgraberPPA
14:46
<stgraber>
Lns: that's because the most stable recent is in lucid
14:48
<Lns>
stgraber: =p gotcha
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14:49
<Lns>
hrm, upon updating my ubu lucid chroot this morning I'm getting the following error when updating dbus : http://pastebin.com/7L3AQDbx - anyone have any clues?
14:50
<stgraber>
export LTSP_HANDLE_DAEMONS=false
14:50
then try upgrading again
14:52
<Lns>
strgaber: did that, same thing
14:54
<stgraber>
weird
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15:00
<johnny>
Lns, wait for them to fix it?
15:01
<Lns>
johnny: heh, yeah not sure what else could be the issue. of course seems to be an ltsp chroot specific thing since no system bus is running when you're upgrading it via chroot
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15:02
<Lns>
there's gotta be a way to upgrade dbus without it doing whatever it does over the system bus though..i'd think.. probably just to reset itself or something.
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15:05
<johnny>
Lns, if nobody else can replicate it.. that must not be the problem
15:06
<Lns>
well this is new as of this morning for me, just during normal updates
15:06
<johnny>
well.. i'd say just wait then
15:06
<Lns>
yea
15:14
<vbundi>
Lns: ahh yeah Gconf, ok thanks
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15:25
<vagrantc>
stgraber: have you tested multiple screen scripts on lucid? failed on debian. committed a fix to ltsp-trunk
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17:39
<john>
I am trying to figure out if upgrading my 7K sata disk to a 15 SAS will help bottle necks apparently caused by high CPU wait time
17:39
does anyone have any ideas in this regard?
17:39
e.g. Do fast disks matter for LTSP?
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17:46
<john>
There used to be info on the ltsp wiki about this but it is gone
17:46
Is anyone using Serial Attached SCSI for LTSP?
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17:50
<john>
sigh
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17:53
<Lns>
john: how many terminals and what kind of work are you talking about?
17:53
server disks are usually not the highest priority as far as bottlenecks in ltsp unless you're really hammering down on them
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17:57
<john>
Lns: I am really a hammering them
17:58
At least I believe that I am. I have high CPU wait times corresponding to 7Ks writes on the disk
17:58
<Lns>
wow
17:59
well i'm not the expert in that :) sorry
17:59
<john>
I am not either :-)
18:00
It doesn't seem like that should be a problem, but it mirrors my very high wait times so I am assuming that lots of little writes by different users is causing issues
18:00
<windmill>
Hi I've finally managed to get my client to boot!! how do I log in?
18:01
Should the accounts on the server work or do I need to add accounts to the i386 directory?
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18:01
<windmill>
do I need to chroot or something?
18:02
<alkisg>
windmill: you login with your server accounts
18:02
<windmill>
alkisg, ok, that doesn't seen to work
18:02
seem*
18:05
<alkisg>
windmill: tail /var/log/auth.log
18:05
Do you see a failed attempt?
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18:06
<alkisg>
Lns, "ltsp-master, ltsp-client, ltsp-send(-cmd)" => do they sound OK? Or it's too similar to the ltsp-server/ltsp-client?
18:06
<windmill>
alkisg, no don't see any attempts
18:06
<alkisg>
*ltsp-slave, I mean
18:06
windmill: distro/version?
18:06
<windmill>
ubuntu karimic
18:06
karmic
18:06
<alkisg>
windmill: sudo gedit /var/lib/tftpboot/ltsp/i386/lts.conf
18:07
Put the following there:
18:07
[Default]
18:07
<Lns>
alkisg: those sound too much like core components to me
18:07
<alkisg>
SCREEN_02=shell
18:07
SCREEN_07=ldm
18:07
Then, reboot the client and press alt+ctrl+f2 to get to a shell prompt
18:07
Lns, those are core components
18:07
They just take care of the communications - nothing with GUI etc
18:07
<Lns>
alkisg: no i mean to ltsp itself
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18:08
<Lns>
ltsp-client...people might confuse that with an actual ltsp terminal/client
18:08
<alkisg>
ltsp-slave, I meant
18:08
<Lns>
well...
18:08
<alkisg>
ok, I thought so too :)
18:08
<Lns>
just mho but i'd prepend something else
18:08
maybe ltsp-manager-client
18:08
if it's not too long
18:10
i dunno about master/slave myself, iiwy i'd call them something a bit more unix-y.. like ltsp-managerd or something similar
18:10
<alkisg>
The problem is that both are daemons
18:10
<Lns>
well like with dhcp, you've got dhcpd, then dhcpcd
18:10
<alkisg>
Ah, right :)
18:10
Didn't think of that
18:10
<Lns>
though i always thought dhcpcd was misleading ;)
18:11
<windmill>
alkisg, am rebooting the client
18:11
<Lns>
how about ltspmd, ltspmcd
18:11
<alkisg>
Hmmm it doesn't sound too bad
18:11
<johnny>
alkisg, so.. have you spoken to sbalnaev about this idea of yours?
18:12
hasn't he had any input?
18:12
<windmill>
alkisg, I've got a terminal on the client now
18:12
<alkisg>
johnny: no, the last I told him is to give me a hand on sch-scripts, but I haven't spoken to him since I started with the communications backend
18:12
windmill: try: ssh user@server
18:12
<johnny>
you really should talk to him.
18:12
<alkisg>
change user to an existing username
18:12
<Lns>
johnny: i think he's gone for the week
18:12
<alkisg>
but *don't change server*
18:13
windmill: if you see any prompts, e.g. "the ip has changed" or "do you trust this server", then you need to update your ssh keys
18:13
johnny: I'm basically done with the core implementation, in the next few days I'll shift to the GUI part
18:14
<windmill>
alkisg, I got the host auth key prompt
18:14
<alkisg>
I hope it can get integrated to the LTSP code tree, but as 2 separate packages, e.g. ltspmd / ltspcd
18:14
windmill: on the server, do: sudo ltsp-update-sshkeys && sudo ltsp-update-image
18:15
<windmill>
alkisg, will do
18:15
<Lns>
ok, i've chased and filed my bugs for the day, i'm outaheeere
18:15
Cheers to the chan
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19:49
<twb>
I hear that gdm dropped XDMCP support. Anybody know if xorg and/or xdm plan to do the same?
19:50
(I ask you guys because I figure you're one of the biggest use cases for XDMCP.)
19:55
<johnny>
twb, it doesn't affect us
19:55
xorg isn't going to drop it
19:55
we don't use xdmcp by default anyways
19:55
<twb>
OK, my main worry was that Xorg were gonna follow gnome's lunacy.
19:56
johnny: because you run the WM and such from the client, and use ssh -X for just the apps?
19:56
<johnny>
yes
19:56
no.. we run wm from the server
19:56
but ssh -X to start it up
19:56
i wouldn't call it lunacy
19:56
<twb>
Why, what's wrong with XDMCP?
19:56
<johnny>
the main use case of gdm is much more specific to the machine
19:56
nothing is wrong with xdmcp
19:56
it's just that gdm is more specific to the machine now
19:57
<twb>
OK, so gdm is just narrowing its focus to a particular use case
19:57
<johnny>
yes
19:57
<twb>
I can live with that :-)
19:57
<johnny>
exactly
19:57
<twb>
Thanks for explaining it to me.
19:57
<johnny>
i don't personally know anybody that actually uses xdmcp tho..
19:58
they all use ssh -X
19:58
it'd just be nicer of ssh shipped with the null cipher
19:58
if it did.. we'd drop xdmcp (what we call LDM_DIRECTX in lts.conf) altogether
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20:01
<twb>
I guess most networks aren't ultimately trusted
20:02
<johnny>
that's why we tunnel in ssh by default
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21:37
<jammcq>
howdie
21:51
<dberkholz>
johnny: anything besides dracut that would be good to put an undergrad student on for the summer?
21:51
i've got someone interested in easy-to-configure clusters, ltsp setups, etc
21:52
hiya jammcq
21:52
<jammcq>
hey dberkholz
21:52
how's it goin?
21:52
<dberkholz>
jammcq: finally finding a bit of time for linux stuff again. starting a new job is always tough
21:52
<jammcq>
cool. you all done with school?
21:53
<dberkholz>
jammcq: sorta. i'm doing a postdoc now
21:53
<johnny>
jammcq, and he has a kid ..
21:53
<jammcq>
ah. you still in oregon?
21:53
johnny: yeah, I heard about the "kid" :)
21:53
<dberkholz>
jammcq: nah, headed back to minnesota where our families are from
21:53
<johnny>
dberkholz, plymouth?
21:53
<jammcq>
cool
21:53
<dberkholz>
johnny: that is where i'm from, but i'm now working at the mayo clinic in rochester
21:54
<johnny>
dberkholz, how about uhmm.. anything to get portage 2.2 stable :)
21:54
lol
21:54
<jammcq>
cool. what are you doing for the clinic?
21:54
<dberkholz>
what do we need there? sets?
21:54
<johnny>
i have no idea
21:54
i don't know why it's not stable
21:54
<dberkholz>
johnny: i'm asking what features we need in 2.2 that are holding back ltsp?
21:55
jammcq: i'm working mainly on a drug-design project for a disease called friedreich ataxia
21:55
<johnny>
the thing that knows how to resolve deps cleanly?
21:55
or was that backported
21:55
<jammcq>
ooooh, sounds interesting
21:55
<dberkholz>
johnny: i think most things besides sets have made it back to 2.1
21:55
<johnny>
err resolve blockers*
21:55
ah.. so nothing
21:56
/me still doesn't know why openrc isn't stable either :(
21:57
<dberkholz>
oh yeah, that was a problem.
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21:58
<johnny>
dberkholz, personally.even if openrc is faster than upstart.. i'd like to see it able to be perfectly integrated as well
21:58
just because it's used in fedora and ubuntu now.. and perhaps someday.. debian
21:58
<dberkholz>
http://en.gentoo-wiki.com/wiki/Google_Summer_of_Code_2010_ideas#Upstart_on_Gentoo
21:59
<johnny>
sweet :)
21:59
and ubuntu is gonna use plymouth too
21:59
so. i would ask to have ltsp use plymouth + upstart + dracut
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21:59
<johnny>
then ubuntu/gentoo/fedora can share much code
22:00
on the client side boot part at least..
22:01
<dberkholz>
johnny: thx for the suggestions
22:01
it seems he's a quite capable student so i'll suggest that he consider doing all of that
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23:02
<vicd>
Hi, All
23:03
why i can't see content of /var/run/drives/usbdisk-sda1 localy?
23:03
i need to use usb stick in rdesktop session
23:04
(sorry for my english :)
23:07
help
23:07
please
23:08
<johnny>
try back in 12 hours
23:08
this is not a good time for support in this channel
23:08
i myself am going to bed
23:08
and everybody else already has..
23:08
<vicd>
thanks
23:46
i have installed ltspfs on chtoot with ltspfsmounter, it helped
23:47
ltspfsmounter mounts usbsticks on /media/root
23:48
but only if i insert usb stick after boot
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