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


Channel log from 29 April 2015   (all times are UTC)

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01:10
<modalsurrealist_>
Hello folks,
01:11
A friend suggested this channel for asking a question i am having a really hard time with
01:12
..about ASCII Control Codes, how to use them, and particularly how to read the preset key map for a telnet client i am using.
01:13
The Chrome OS version of the client is found here, http://www.mochasoft.dk/chrome_tn5250.htm
01:14
If you go into the settings, then 'Key Data', you will see there are a bunch of Esc codes preset on the f keys. How do i find out what these mean?
01:21
I have been able to map these keys to strings of text mixed with /015 (Carriage Return) and /014 (Space) to create some very useful macros, but i want to know what else i can do with them. Specifically, i'm hoping there is a way i can embed the content of my clipboard into the sequences.
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05:24
<work_alisg>
modalsurrealist: that's not really ltsp related...
05:24work_alisg is now known as alkisg
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10:48
<Uzzi>
nfs over tcp not available ltsp why this?
10:57
<alkisg>
Uzzi, why do you say that?
10:58
I believe it's fine... which distro/version?
10:59
<Uzzi>
debian ewwzy
11:00
<alkisg>
nfsmount should support tcp nfs fine
11:00
It's part of klibc
11:01
Maybe you haven't set up nfs correctly
11:02
<Uzzi>
/srv/tftp 172.16.1.0/24(sync,ro,no_root_squash,nohide) /opt/ltsp 172.16.1.0/24(sync,ro,no_root_squash,nohide)
11:02
<alkisg>
Can you mount /opt/ltsp/i386 from another pc?
11:03
You don't need to serve /srv/tftp with nfs, by the way...
11:04
<Uzzi>
mount: special device 172.16.6.75/opt/ltsp does not exist
11:04
mmmm
11:06
now I've mount 172.16.6.75:/opt/ltsp on a pc
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11:49
<alkisg>
Uzzi: and your ltsp clients still can't boot?
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12:26
<Uzzi>
o yes
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14:30
<here_and_there>
can comeone give me a clue why my usb pen is not recognized, please
14:30
when I open a localapps term and make a dmesg, I can see that it is detected
14:30
but the automatic mount is not done
14:30
in my lts.conf I have LOCALDEV=True
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15:34
<danau11>
my 2 cents....https://wiki.debian.org/LTSP/Howto worked out better for PNP than any ubuntu reference i have touched.
15:41work_alkisg is now known as alkisg
15:41
<alkisg>
danau11: that's mostly copied from my ltsp-pnppage :)
15:41
!ltsp-pnp
15:41
<ltsp`>
ltsp-pnp: ltsp-pnp is an alternative (upstream) method to maintain LTSP installations for thin and fat clients that doesn't involve chroots: https://help.ubuntu.com/community/UbuntuLTSP/ltsp-pnp
15:42
<alkisg>
here_and_there: distro/version?
15:42
Uzzi: do you get a busybox (initramfs) shell? does nfsmount work from there?
15:43
<danau11>
thanks alkisg my troubles with the ubuntu reference all stem from network manager using dnsmasq and the SYSLINUX/PXELINUX troubles with the file locations not matching the kernal-update scripts
15:43
<alkisg>
danau11: I've updated the ppa 2 years ago, so it should now be able to handle newer pxelinu
15:44
About network-manager, I complained a lot at the ubuntu devs but ... :-/
15:44
The workaround in the page should work fine though
15:44
I.e. to tell network-manager not to spawn its own resolver
15:44
<danau11>
ya i got around that one
15:45
<alkisg>
I'm not aware of any issues not covered in that page
15:45
If you find one, ping me
15:45
<danau11>
but the newer ubuntu builds seem to shuffle the file locations for pxeconfig.0 etc
15:45
let me crank up my test machine and i will check file locations
15:45
<alkisg>
You mean non-lts versions?
15:45
<danau11>
let me check for accuracy
15:46
<alkisg>
Sorry I don't upload ltsp for non-lts ubuntu versions in the greek schools ppa...
15:46
With 9 months of support, I think they're only good for devs, not users
15:47
Btw, if debian works fine for you, keep it, there's no need to switch to ubuntu for ltsp, it's not that it's better supported there...
15:47
<danau11>
let me get them side by side and share what i can not based on my memory
15:48
<Uzzi>
alkisg: netbooting dskless
15:49
<alkisg>
Uzzi: I don't understand what you're saying... maybe you could write bigger sentences
15:49
<Uzzi>
:D
15:53
<danau11>
askisg, its Ubuntu 14.10 so you are correct its not LTS
15:53
so we can call this my problem for not paying attention
15:53
<alkisg>
OK, I'm writing to the top of that page that only 12.04 and 14.04 are supported :)
15:53
If you really want to, you can use the ltsp daily ppa temporarily
15:53
I think I've posted ltsp builds there for 14.10 too...
15:54
But... better don't :)
15:54
<danau11>
no noted it and highlighted it and i missed it so my fault
15:54
<alkisg>
Use 14.04
15:54
<danau11>
thanks for the guide
15:54
<alkisg>
np
15:54
<vagrantc>
danau11: the pxelinux file locations changing has been reported in launchpad for quite some time with no action
15:54
danau11: ltsp apparently needs a maintainer in ubuntu
15:55
<danau11>
thanks vagrantc
15:55
<alkisg>
stgraber: ^^^ please drop the ubuntu diff and let it sync with debian... :)
15:55
It doesn't even boot anymore
15:57
<vagrantc>
i think the main difference at this point was the debian-installer .udeb
15:57
i could probably write up some conditional logic based on install environment
15:57* vagrantc has also been meaning to add support for the ltsp-pnp image generation to the .udeb
15:58
<vagrantc>
should be trivial...
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15:58* alkisg wonders if we have to rename ltsp to something else in order to drop all obsolete code there... :)
16:03
<stgraber>
IIRC we still had a bit of Edubuntu delta so can't just sync but we can certainly drop most of the delta on the floor
16:04
unfortunately we don't have an open development release now so not much I can do about it until we do
16:06
<alkisg>
stgraber: me and I think vagrantc are willing to make it work in ubuntu 15.10 if you're willing to accept that it will be the same as in debian
16:06
I.e. no ltsp-cluster bits, no nbd-proxy, defaults to 192.168.67.x and whatever else debian has
16:07
I can test with vagrantc's ltsp-debian-packaging plus ltsp-trunk/ldm-trunk etc, with a launchpad recipe for 15.10
16:09
But I'm not willing to do it if ubuntu has its own tree for packaging
16:09
(with the X-Ubuntu-XXX directives in debian/control, we shouldn't need a different tree..)
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16:12
<Uzzi>
ERROR: ltsp chroot not found: /opt/ltsp/i686 but ls /opt/ltsp/--->i386
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16:41
<stgraber>
alkisg: I don't care about most of those things, but I do care about not breaking Edubuntu and IIRC we have a chunk of code in the ltsp postinst for that which we'd need to relocate
16:42
<alkisg>
stgraber: which part are you talking about?
16:42
AFAIK edubuntu is broken currently...
16:42
(well, if one installs 14.10 + edubuntu desktop)
16:43
stgraber: in any case, that's good news, I think they mean that we can start working on this
16:44
vagrantc: this script disables flow control (i.e. 10 times faster networking when applicable) and does NAT for 192.168.67.1, do you think it can go to ltsp/debian/ltsp-server.if-up?
16:44
http://bazaar.launchpad.net/~ts.sch.gr/sch-scripts/trunk/view/head:/debian/sch-scripts.if-up
16:45
I finally got it to work with mii-tool too today, instead of just ethtool
16:45
So realteks and non-manageable switches are no longer a problem
16:45
(we had to buy hundreds of intel NICs + managed switches previously just for this problem...)
16:49* vagrantc looks
16:51
<alkisg>
Intel, broadcom, marvel, nvidia nics work with ethtool, while realtek, atheros etc with mii-tool, so far I had 100% success in the tests I did at some schools
16:51
<vagrantc>
alkisg: mucking with firewalling rules by default doesn't seem safe to me
16:51
<alkisg>
vagrantc: we can put an option for the NAT, but if someone has ip=192.168.67.1, I believe that he does want NAT for his clients
16:52
E.g. NAT=True in /etc/default/ltsp
16:52
Or in /etc/ltsp/ltsp-server.conf
16:52
<vagrantc>
there is no magic to 192.168.67.1 == LTSP
16:52
<alkisg>
Or even NAT=192.168.67.1
16:52
Why not? debian-edu even gives specific IPs to specific roles
16:53
No problem though, you're the debian maintainer, I'm just throwing the idea
16:53
we can move from sch-scripts to ltsp whatever you like, I'll keep the rest inside sch-scripts
16:54
The flow control part is more significant than the NAT part though
16:55
<vagrantc>
regarding the mii-tool/ethtool stuff ... it depends on the vendor which needs to be called? ideally we'd want something a little less shotgun approach
16:55
<alkisg>
I haven't found a solution online the last 3 years I've been looking into it
16:55
<vagrantc>
i.e. run the appropriate tool for the appropriate vendor, etc.
16:55
<alkisg>
We don't know which vendor supports which tools
16:55
We have to do feature detection instead of vendor/version detection
16:56
Some even claim they support a tool, but they don't
16:56
<vagrantc>
fair enough
16:56
<alkisg>
It's a very common issue on the web, but I've seen it applies on linux a lot too
16:56
<vagrantc>
does: output=$(/bin/false) actually return true ?
16:57
<alkisg>
Example, the same vendor and NIC need autoneg on / rx off in ubuntu 10.04, and then autoneg off / rx off in ubuntu 12.04
16:57
<vagrantc>
nope.
16:57
what a mess.
16:57
<alkisg>
An assignment doesn't change $?
16:58
<vagrantc>
alkisg: your code is fine with that.
16:58* vagrantc guessed badly before testing
16:58
<alkisg>
OK, feel free to copy whatever you think is worth it to go to debian/ltsp-server.if-up... just ping me to remove it from sch-scripts then
16:59
Ah we can arrange for some time to work together on the packaging if you like
16:59
To take care the ubuntu .diff drop as well
16:59
<vagrantc>
alkisg: so your code doesn't run mii-tool if ethtool works?
16:59
<alkisg>
Right
17:00
And if ethtool reports that it's already disabled, it doesn't run anything
17:01
The combinations to make it work were very tricky, I think it's ok now though, as clean as it can be...
17:01
The correct way would be for all network modules to expose a parameter for flow-control in modprobe.conf
17:01
<vagrantc>
that you need to call it with seemingly exact arguments on different cards seems bizarre. not that i'm contesting that's the reality of it... but eesh.
17:01
<alkisg>
But only a couple of them provide that
17:01
<vagrantc>
exactly opposite
17:02
<alkisg>
A couple of years ago I even asked in the kernel's networking list, but got no answer for any good way to disable flow control
17:03
<vagrantc>
alkisg: i'd say go ahead and commit it minus the iptables stuff
17:04
<alkisg>
vagrantc: I don't have commit access to debian/
17:05
Should I commit it to /usr/share/ltsp-server/disable-flow-control, and then packagers can call it from their if-up scripts?
17:07
.../usr/share/ltsp/disable-flow-control, sorry, I forgot we put everything there
17:16
<vagrantc>
alkisg: that sounds like a reasonable approach.
17:17* vagrantc forgot we don't have directories to dump everything into
17:17
<vagrantc>
the client/share could be extended to client/etc, server/etc, etc.
17:17
with client/Debian/etc ...
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20:48
<Dsys>
good day. Where can I send a donation for ltsp?
20:48
i should ask first, do you accept paypal donation?
20:52
<vagrantc>
i'm not sure we've set up a donation infrastructure
20:53
i've toyed with the idea of proposing some crowdfunding ideas for specific features and dvelopment
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