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07:45 | <valeriobozzolan> Why in the LTSP docs apparently there is no word about fat clients?
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07:46 | (In ltsp.org i say)
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07:50 | It's OK that this topic is taken only on distro-secific documentation?
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08:01 | If someone one day want to add fat clients documentations in ltsp.org wiki, can? Or is better no because it's a thing related to the distro?
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08:01 | <alkisg> We don't have enough people for documentation
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08:02 | <valeriobozzolan> Ahn! :)
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08:02 | <alkisg> We started fat clients 3-4 years ago, noone has come up to document them
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08:02 | <valeriobozzolan> Clear :)
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08:02 | <alkisg> If you want, you can become a documentation person :)
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08:03 | <valeriobozzolan> Always, if i works on something and I must remember how i've done it, I edit the related wiki of the project.
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08:03 | So if one day I test FAT... <3
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08:31 | <alkisg> So you've already edited the pages for thins? Nice! :)
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08:35 | <valeriobozzolan> But I've noticed that everything I've needed it's yet written :)
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08:35 | Even the NoAccel
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08:59 | <Hyperbyte> alkisg, hi!
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08:59 | <valeriobozzolan> ( OK, now I'll remember forever hot to fix my problem :D http://wiki.ltsp.org/wiki/Troubleshooting#Video_problems )
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09:29 | <alkisg> Hi Hyperbyte :)
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09:43 | <Hyperbyte> alkisg, I need to cut down on bandwith usage on my network with fat clients. Any tricks?
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09:44 | NBD compression, for example? Or is that already enabled with ltsp-pnp?
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09:50 | <alkisg> Hyperbyte: it's already enabled, unless you upgraded from stock 12.04
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09:51 | Hyperbyte: you can use local nbd caching
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09:51 | !local-boot
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09:51 | <ltsp> local-boot: If you want LTSP fat clients on a low-speed network, you can put i386.img on e.g. C:\Boot\LTSP\i386.img and use this command line in pxelinux.cfg: APPEND ro initrd=ltsp/i386/initrd.img init=/sbin/init-ltsp root=/dev/sda1 rootflags=ro loop=/Boot/LTSP/i386.img; IPAPPEND 3
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09:58 | <Hyperbyte> Diskless clients. :)
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10:00 | <alkisg> Hyperbyte: you can't decrease the network bandwidth without putting it somewhere else
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10:00 | So, decide, either more NICs on the server etc, or load balancing (e.g. NFS home elsewhere), or local caching with e.g. usb sticks
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10:00 | There are some new usb sticks that are extremely fast, ssd-lie
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10:00 | like
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10:01 | So, with e.g. 20€/client, you can increase the "virtual disk speed" of the clients 10 times or more
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10:02 | <Hyperbyte> Nah, problem isn't NICs on server... problem is I'm having loads of audio streams on my network and they're being bothered by LTSP somehow
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10:02 | I need to figure out how to seperate this at the physical (switch) level
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10:02 | But I wondered if there is also trick to get bandwith usage down, even if just a little.
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10:03 | <alkisg> Hyperbyte: you mean that the bandwidth is enough, and you're having QoS problems?
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10:05 | (actually, 5€/client should be enough for an 4 or 8 GB USB 3 stick)
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10:05 | bbl...
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13:49 | <Hyperbyte> alkisg, hrm... logging in to 14.04 LTSP here at the radio station with ltsp-pnp takes a reeeeeally long time. Like half a minute before it shows desktop, if not longer. Doesn't take that long if I log in over plain SSH. Any ideas?
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13:53 | Just measured. 45 seconds.
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13:54 | Hrm, looks like logging out and then logging back in is lightning fast.
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14:13 | Anyone got any ideas how to remove "Power off" from the menu in 14.04?
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15:02 | <alkisg> Hyperbyte: http://www.epoptes.org/documentation/lan-benchmark
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15:03 | Post the results of that whenever you can
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15:03 | (I assume fat clients)
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15:05 | <Hyperbyte> alkisg, you assume correctly. I will check this later.
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15:06 | <alkisg> Hyperbyte: about poweroff, you'd need to edit the /usr/share/polkit-1/actions/*.policy files
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15:07 | ./org.freedesktop.login1.policy
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15:08 | <action id="org.freedesktop.login1.power-off">
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15:08 | <allow_active>yes</allow_active> => no
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15:09 | Same for reboot etc
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15:15 | <Hyperbyte> Hrm, I'm gonna delay deployment of 14.04 for a bit until I figure this out completely.
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15:15 | Can you write me a small script that makes these changes to the policies on the fly?
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15:16 | Just some line that replaces the yes with a no
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15:17 | <alkisg> Sorry, too busy (got enough work for the next 20 months or so :D), but you can edit the file, save it as a copy, and put an RCFILE_01="mv symlink to file" lts.conf directive to do that
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15:17 | <Hyperbyte> Thing is, I only need to disable shutdown for -some- specific clients from lts.conf. So I need to invoke some script that makes the changes.
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15:17 | Hrm... I guess that'd work.
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17:35 | <gbaman> vagrantc: have you got any experience with bootchart?
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17:38 | <vagrantc> i think i ran it once 5 years ago
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17:38 | <gbaman> trying to run it with pis
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17:38 | LTSP isnt very happy
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17:39 | but there is something causing a 20 second pause
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17:39 | which I am trying to track down
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17:42 | <gbaman_> and apparently I timed out
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17:48 | here is the error - https://dl.dropboxusercontent.com/u/1122948/temp/photo%201-3.JPG
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21:14 | <gbaman> vagrantc: been trying to find what has been causing a 10-20 second pause in Raspi-LTSP boot recently, have traced it (using a lot of echos) to etc/init.d/networking to the marked line here http://pastebin.com/ynpjUaPj
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21:14 | any ideas?
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21:14 | actually, wait one sec
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21:19 | ok, it looks like it is sitting waiting for an NFS server?
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21:20 | for 20 seconds?
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21:22 | <vagrantc> gbaman: this has been happing all along, or just with a new server, or what?
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21:43 | <gbaman> seems to be caused by NFS 4? Mounting with NFS 3 takes under a second, NFS 4 takes 16 seconds?
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21:44 | <vagrantc> haven't used NFSv4
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21:44 | <gbaman> in LTSP?
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21:46 | it is taking exactly the same amount of time mounting the same drive via NFS4 on another machine as the client is hanging for on boot
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21:48 | <vagrantc> aven't used NFSv4 at all.
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21:48 | <gbaman> LTSP though is using it..
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21:48 | <vagrantc> not my LTSP
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21:49 | <gbaman> :)
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21:49 | <vagrantc> not the default in Debian...
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21:49 | <gbaman> is mounting it even when using NBD?
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21:49 | which is weird..
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21:50 | <vagrantc> sounds like you have an unusual setup :P
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21:50 | <gbaman> I am using Pis, of course my setup is unusual :)
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22:03 | <vagrantc> the pi LTSP test setups i've done did nothing unusual...
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22:08 | <gbaman> might just be something weird with my network..
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22:08 | will try on another network when I get a chance
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