IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 17 April 2014 (all times are UTC)
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| 06:45 | <Ark74> later! ;)
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| 07:03 | <Chap_> I think I win the weirdest award. Logins works OK. screensaver unlocks do not.
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| 07:15 | <gdi2k> Chap_, I have that issue too!
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| 07:15 | just noticed it yesterday
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| 07:35 | <Hyperbyte> That's normal LTSP behaviour.
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| 07:36 | LTSP has a different way of logging in users, so it comes with a custom login manager (LDM). It doesn't come with a custom screensaver. If you want screensaver unlocking to work, you need something like LDAP on top of LTSP.
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| 11:48 | <Ano> Hello !
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| 11:48 | I just made an installation of my LTSP server and I want to know if I made all steps needed to launch my thin client
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| 11:49 | <MrV> you did
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| 11:49 | now launch you client
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| 11:49 | <Ano> Ok. . .
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| 11:49 | Soooo
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| 11:50 | I installed the server, then config dhcp and finally built the client with a 32bit architecture
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| 11:50 | <MrV> tftp?
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| 11:51 | <Ano> Can you put a verb in your sentance please ?
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| 11:52 | <MrV> lol! did you installed and configured tftp server?
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| 11:52 | man, there are tons of manual on simply installing ltsp, go rtfm, please
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| 11:53 | sorry for being rude if I am...
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| 11:53 | <Ano> I read all the fucking manuals since the beginning of the week
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| 11:53 | <MrV> bye
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| 11:53 | <Ano> I would not be there if I did not
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| 11:53 | <MrV> so where is your question then?
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| 11:54 | action - error - question
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| 11:54 | a simple road to ask for help
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| 11:55 | <Ano> All services I installed - want to be sure to do not make mistake - do I need some services else ?
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| 11:55 | <MrV> rtfm
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| 11:56 | then try to install
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| 11:56 | then try to launh client
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| 11:56 | then make up a question
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| 11:56 | if you did everything as manuals told you - you did everything right
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| 11:57 | if not - you're probably did something wrong
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| 11:57 | i'm gone
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| 11:57 | <Ano> Thanks captain abvious . . .
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| 11:57 | <MrV> bye
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| 11:57 | <Ano> Is there other support than yours ?
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| 11:58 | <MrV> you make senteces like a russian. are you russian?
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| 11:58 | <Ano> -___-
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| 11:59 | <MrV> how in the hell can I tell you is there any other support than me? I'm not a support
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| 11:59 | <Ano> Why are you the exact archetype of the associal-buddy-irc-"you are so baaad compare to me" ?
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| 12:00 | <MrV> no, I'm a noob in LTSP mostly
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| 12:00 | <Ano> So why the fuck do you answer my question on the the support ltsp irc channel ?
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| 12:00 | <MrV> because noone else did
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| 12:00 | and noone else would I guess
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| 12:01 | <Ano> So if it was to have the pleasure to say rtf, congrat
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| 12:01 | You won your day
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| 12:01 | <MrV> they never answered my question
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| 12:01 | <Ano> I would have prefer silence than your bullshit
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| 12:01 | <MrV> or you could prefer manuals
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| 12:01 | :)
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| 12:01 | <Ano> I'm finish with you troll
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| 12:02 | <MrV> no really, I had a problem with video card
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| 12:02 | I thought it was a driver problem
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| 12:02 | noone answered me on this channel
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| 12:02 | so I continued googling and found out it could be not a driver with the same error message
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| 12:03 | "what else?" I thought to myself
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| 12:03 | the video card itself?
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| 12:03 | no it was good inough... but wait!
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| 12:04 | google, give me some manual on this chip.... yeah! right! memory - 4 MB!
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| 12:04 | so i set X_COLOR_DEPTH=16
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| 12:04 | and there it is!
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| 12:05 | so, manual - is a great tool!
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| 12:07 | sorry, but I'm really got to go, so good luck to you with your services, installations, clients and all!
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| 12:07 | for the last time today - bye!
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| 12:08 | <Hyperbyte> Wow, guys... what's going on here?
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| 12:09 | MrV, chill out and be nice.
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| 12:09 | Ano, don't swear and ask some good, specific questions.
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| 12:09 | What's up?
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| 12:10 | <Ano> Fine, I made my best to stay polite.
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| 12:11 | I need to know the very basic services required to boot a thin client.
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| 12:13 | For the moment I have in mind ltsp-server ; dhcp-server ; ltsp-client
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| 12:13 | Does LTSP required something else ?
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| 12:14 | Is my question good enough ?
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| 12:20 | <Hyperbyte> Ano, why do you want to know all this?
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| 12:20 | If you want to know if the installation worked, just boot a client. :-) If it doesn't work, let us know what exactly doesn't work, where it stops, what's on screen, et cetera... and we'll work from there.
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| 12:21 | LTSP depends on many services/system parts. Which ones exactly depends on what distro you're using and what LTSP version.
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| 12:22 | Generally speaking, dhcpd, tftpd, sshd and nbd should do it on the server site. But as I said, this list differs from distro to distro.
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| 12:23 | <Ano> Sure. And that is what I want to know
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| 12:24 | basics
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| 12:24 | then the shades of the other stuffs will come with the bug
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| 12:24 | So
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| 12:25 | My client began to boot and took an ip by the dhcp
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| 12:26 | Then gave me the next error message "NFS over TCP not available on -ip.of.the.server-"
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| 12:26 | <Hyperbyte> Which distro is this?
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| 12:27 | <Ano> I'm looking log syslog and searching for the ltsp log. but nothing for the moment.
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| 12:27 | Debian 7 updated
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| 12:29 | <Hyperbyte> Not entirely sure about that error. Haven't used Debian myself.
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| 12:30 | <Hyperbyte> LTSP can use NBD (default) or NFS to mount it's root filesystem. I thought Debian used NBD by default.
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| 12:30 | <Ano> wait
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| 12:30 | wikipedia translation
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| 12:31 | <Hyperbyte> Do you have a lot of experience with Linux?
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| 12:31 | <Ano> Can you explain me what NBD is ?
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| 12:31 | Linux is like martiel arts
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| 12:32 | You lear every time
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| 12:32 | +n
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| 12:32 | sorry
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| 12:32 | Not enough for you to tell things without explainings what they are
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| 12:32 | <gbaman_> NFS is default on Debian
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| 12:32 | with NBD for swap
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| 12:33 | Ano: both are methods of mounting the OS for the thin client, basically sending stuff across the network
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| 12:33 | <Ano> Yép
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| 12:33 | <gbaman_> *fat
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| 12:34 | NBD is compressed, making it quite a bit more efficient
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| 12:34 | but more processor intensive
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| 12:34 | for the client? (Hyperbyte correct me if I am wrong)
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| 12:34 | also every time you make a change to your OS on the server, you have to recompress the OS
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| 12:35 | so when experimenting, you can start with NFS then move to NBD
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| 12:35 | NBD is by default used for swap on Debian
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| 12:36 | <Hyperbyte> gbaman_, not entirely sure.
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| 12:36 | <gbaman_> :)
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| 12:37 | <Hyperbyte> Ano, without sounding like a Ubuntu fanboy (which I'm actually not)... if you're experimenting/learning, it might be more useful to start with setting up an LTSP server on Ubuntu. And then don't pick the latest (newest) version either, stick with 12.04 for now.
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| 12:38 | <gbaman_> agreed, Ubuntu is a tad easier to work with. Only issue is it is normally a version or 2 behind (Debian fanboy)
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| 12:38 | but for normal thin clients, that isnt an issue
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| 12:38 | <Hyperbyte> Most people using LTSP are using it in combination with Ubuntu; there's a lot more support for 'buntu. And while I can't speak about setting up LTSP on Debian, I know I haven't managed to screw up once with Ubuntu.
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| 12:38 | <gbaman_> Ano: What were you trying to do btw?
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| 12:39 | <Ano> Thanks for the advice. However I'm not free to choose the distrib ^^
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| 12:39 | <gbaman_> Set up a standard thin client network?
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| 12:39 | <Hyperbyte> gbaman_, I'm actually more RPM distros fanboy. ;-) But for LTSP I've chosen Ubuntu instead of CentOS or Fedora, because of the better support, actually.
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| 12:39 | Ano, I'm not saying you should use Ubuntu period. I'm saying, do a Ubuntu setup first. Or even use an Edubuntu live CD. Then you can see how it works.
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| 12:39 | <Ano> I understand that so
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| 12:40 | <gbaman_> single easiest way to set up LTSP is with LTSP-pnp
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| 12:40 | https://help.ubuntu.com/community/UbuntuLTSP/ltsp-pnp
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| 12:40 | is really simple and quite
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| 12:40 | *quick
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| 12:40 | <Ano> what I'm doing is to implement a server, in the place I work
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| 12:40 | <gbaman_> ok
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| 12:40 | thin or fat clients?
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| 12:41 | <Ano> with, in the middle of other stuff, a LTSP server for 4 or 5 thin clients
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| 12:41 | <gbaman_> ok
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| 12:41 | do you already have a DHCP server on the network?
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| 12:42 | <Ano> Nope I have to implement it on the LTSP's machine
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| 12:42 | <gbaman_> ok
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| 12:42 | you running 32 bit or 64 bit Debian?
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| 12:42 | (am assuming wheezy)
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| 12:44 | <Ano> 64 bit wheezy updated and upgraded
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| 12:44 | <Hyperbyte> Ano, are you planning to use thin or fat clients?
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| 12:44 | <Ano> Thin clients Hyperbyte
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| 12:44 | <gbaman_> do all your thin clients support 64 bit?
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| 12:44 | <Ano> Nope my thin clients are under 32 bit
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| 12:44 | <gbaman_> there goes ltsp-pnp
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| 12:44 | <Hyperbyte> Ano, you understand that when you do that -all software- on -all computers- on your entire network runs on the server, right?
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| 12:45 | <Ano> Yes I do
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| 12:45 | <gbaman_> so gota do it the more manual way
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| 12:45 | is the server doing anything else other than a DHCP server and LTSP server?
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| 12:45 | <Hyperbyte> Ano, okay... just checking. :)
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| 12:45 | <Ano> Not for the moment but it will
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| 12:45 | <gbaman_> ok
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| 12:46 | * gbaman_ likes LTSP-pnp which requires server to be running same as clients | |
| 12:46 | <Hyperbyte> Ano, I actually have the same setup as you. I have one real beast of a server, and run everything on it. Don't have any harddisks over here, except in the server room.
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| 12:46 | Thing is, I find running all user programs (like Firefox, LibreOffice, etc) on my server OS directly uncomfortable. I actually created a virtual machine for LTSP. :-)
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| 12:47 | <Ano> at home ? Sexy
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| 12:47 | <Hyperbyte> At work.
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| 12:47 | :)
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| 12:48 | This is one setup you could consider as well, using a virtual machine for LTSP. Then if, say, you require some specific piece of software for your clients, you don't have to install it on your actual server.
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| 12:49 | <Ano> Well It doesn't matter it's for clients which aren't used so much they have an utilitary role not production one. We are working like that curently the goal is to implement a new server to stop paying the one we rent and that do not work.
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| 12:49 | But I have to do with the material I have
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| 12:49 | Soo
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| 12:49 | I wanna read pnp support
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| 12:49 | <gbaman_> what have you done so far?
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| 12:50 | <Ano> To see what is the point with it
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| 12:50 | <gbaman_> LTSP setup wise
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| 12:50 | <Hyperbyte> Virtual server doesn't require (much) extra resources. Overhead is neglible. Anyway, it's besides the point. You can do it on the host/server OS itself as well.
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| 12:50 | <gbaman_> pnp basically uses the host OS instead of building a completely new one that is separate
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| 12:50 | it is quick and easy
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| 12:50 | but means every package you install on the server, will also be included on the clients
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| 12:51 | <Ano> And I wanna install a nbd server to try to boot my server again
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| 12:51 | <gbaman_> you should though be able to just use the normal method
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| 12:51 | <Ano> Ok gbaman_
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| 12:51 | <gbaman_> and should be as simple as installing
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| 12:51 | and building client
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| 12:51 | so
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| 12:51 | sudo apt-get install ltsp-server-standalone
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| 12:52 | sudo ltsp-build-client --arch i386
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| 12:52 | <Ano> then dhcpd
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| 12:52 | <gbaman_> then need to work out DHCP server
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| 12:52 | i am used to having to work on networks that already have DHCP servers
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| 12:52 | <Ano> Exactly the cross where I am
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| 12:53 | <gbaman_> hmm, am sure one of my virtuals was set up with a DHCP server..
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| 12:54 | actually, LTSP contains something to auto setup DHCP..
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| 12:54 | hmm
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| 12:54 | <Ano> I have an idea (quite basic)
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| 12:54 | init 6
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| 12:54 | <gbaman_> ltsp-server-standalone has a DHCP server...
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| 12:54 | configured?
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| 12:55 | <Ano> Yes of course, and I wrote in the default dhcpd.conf to go to the ltsp dhcpd.conf
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| 12:56 | <gbaman_> ltsp-config dnsmasq --no-proxy-dhcp
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| 12:56 | that might do it?
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| 12:56 | or break everything
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| 12:56 | <Hyperbyte> Ano, no idea about Debian, but is nfsd started?
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| 12:56 | <gbaman_> cant test it as I already have a DHCP server on this network (so would break everything)
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| 12:56 | <Ano> ok wait
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| 12:57 | <Hyperbyte> gbaman_, Ano pasted an error before... client got DHCP, but couldn't mount NFS. I think he's one step past what you're trying to fix.
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| 12:57 | <gbaman_> ohh
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| 12:57 | ok
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| 12:57 | <Ano> gbaman_: what this command should do ? Hyperbyte what is nfsd ?
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| 12:57 | <gbaman_> so he already has a working DHCP server, thanks Hyperbyte
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| 12:58 | well debian does default to NFS, maybe worth switching to NBD
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| 12:59 | <Ano> I have a NBD server allready install. How do I made the client booting on it ?
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| 12:59 | <gbaman_> that would require me to remember how to turn it on :)
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| 12:59 | Ano: what happens when you run
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| 12:59 | ltsp-update-image
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| 13:00 | and could you dump your /etc/ltsp/dhcpd.conf contents into a pastebin?
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| 13:00 | <Ano> it's loading stuff for the moment
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| 13:00 | I could do that
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| 13:03 | <gbaman_> hmm, might try switching the Raspberry Pi system to NBD
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| 13:04 | and Ano actually the command you will need to run to switch to NBD is
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| 13:04 | ltsp-update-image --config-nbd
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| 13:07 | <Ano> So I copy / pasting dhcpd it's comming. ltsp-update-image gave me some info about the system and updated tftpboot to i386 architecture, and created some stuff onto the nbd-server
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| 13:07 | (some stuf = magic **___**
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| 13:07 | <gbaman_> did it give
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| 13:07 | Parallel mksquashfs:
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| 13:07 | ?
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| 13:08 | and then go and slowing compress the image?
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| 13:08 | have just decided to try it on my own :)
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| 13:09 | <Ano> Yes it made that and it's done
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| 13:09 | <gbaman_> ok, then you should now be using NBD
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| 13:09 | <Ano> Cool
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| 13:09 | <gbaman_> it will need to be set in your DHCP config file
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| 13:10 | /etc/ltsp/dhcpd.conf to be exact
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| 13:10 | <Chap_> I'm still getting unity as the ltsp xsession, even with gnome-fallback set in lts.conf and gnome-session-flashback installed - I also rm'd /usr/share/xsessions/ubuntu.desktop
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| 13:11 | <Ano> So I should make a test again. I mean to boot the client
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| 13:11 | <gbaman_> need to see /etc/ltsp/dhcpd.conf first
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| 13:11 | I dont think the NBD setup script edits it
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| 13:11 | <Ano> Yep I forget sorry
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| 13:11 | Ok
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| 13:14 | Is it good if i send you the dhcpd.conf in raw ?
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| 13:14 | <gbaman_> if it isnt too many lines?
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| 13:14 | might be easier to dump into a pastebin http://pastebin.com/
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| 13:14 | <Ano> Oh I did not mean by irc ^
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| 13:15 | <gbaman_> ?
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| 13:17 | <Ano> http://pastebin.com/RWF0GFsW
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| 13:17 | <gbaman_> hmm
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| 13:17 | it isnt set up for NBD
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| 13:18 | <Ano> I meant " can I send you the file raw" not copy / past my dhcp conf here ^^
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| 13:18 | Yep
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| 13:18 | How should I set it up for NBD ?
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| 13:19 | <gbaman_> a good question :)
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| 13:19 | <Ano> xD
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| 13:19 | Ok, I'll search some fucking manuals know
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| 13:19 | <gbaman_> ok, make a copy of the dhcpd.conf file
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| 13:19 | and I am going to take a stab in the dark
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| 13:20 | <Ano> done
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| 13:20 | <gbaman_> change this line "option root-path "/opt/ltsp/i386";"
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| 13:20 | <Ano> I'll sue you if you ruin my server ^^
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| 13:21 | <gbaman_> to option root-path "nbd:2000:squashfs:ro";
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| 13:21 | well it cant break anything :)
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| 13:21 | is only DHCP
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| 13:21 | there is a reason I got you to make a backup of config file first :D
| |
| 13:21 | then
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| 13:21 | service ltsp-dhcpd restart
| |
| 13:21 | give that a go
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| 13:22 | <Ano> Ok just to be sure, could you put between { } what I have to put into the dhcpd.conf file ?
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| 13:22 | <gbaman_> {option root-path "nbd:2000:squashfs:ro";}
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| 13:23 | look for the line {option root-path "/opt/ltsp/i386";}
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| 13:23 | i am leaning towards a 5% chance that might work :)
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| 13:23 | <Ano> Yes it is so I replace /opt/ltsp/. . . . By nbd:2000:squashfs:ro true ?
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| 13:23 | <gbaman_> yes
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| 13:23 | <Ano> Do not worry it is my case too ^
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| 13:24 | <gbaman_> really need alksig (who comes on normally in a few hours)
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| 13:24 | who knows everything
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| 13:24 | i do agree, the documentation for LTSP is very poor
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| 13:24 | <Ano> Yes he is very good
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| 13:24 | <gbaman_> or vagrantc is quite good too
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| 13:25 | <gbaman_> it blow up?
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| 13:25 | <Ano> Iwait
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| 13:26 | Ok wait
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| 13:27 | <gbaman_> hmm
| |
| 13:27 | think it might be wrong, but give it a go anyway
| |
| 13:27 | have found another idea
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| 13:27 | <Ano> The problem here is that I have no ltsp-dhcp service but I wrote include "/etc/ltsp/dhcpd.conf" into the dhcpd.conf of the default dhcp service
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| 13:28 | <gbaman_> ohh
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| 13:28 | <Ano> I'll try by restarting isc-dhcp server
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| 13:28 | <gbaman_> have a funny feeling that is old
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| 13:28 | restart it normally
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| 13:28 | ignoring LTSP
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| 13:28 | <Ano> Then I boot the client ?
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| 13:29 | <Hyperbyte> gbaman_, where did you get that option root-path line from?
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| 13:29 | <gbaman_> a random guide, looks rather old
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| 13:29 | have a funny feeling is way off
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| 13:29 | <Ano> huhu ^^
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| 13:30 | <gbaman_> did it blow up ano?
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| 13:30 | <Hyperbyte> gbaman_, nbd shouldn't require root-path. That's for NFS. The NBD configuration is doing by ltsp-update-image in /var/lib/tftpboot
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| 13:30 | *doing -> done
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| 13:30 | <gbaman_> so it isnt defined by DHCP?
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| 13:31 | <Hyperbyte> All your need for NBD is dhcpd configs next-server and filename.
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| 13:31 | (which point to tftp)
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| 13:31 | <gbaman_> ignore me then Ano :)
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| 13:31 | listen to Hyperbyte :)
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| 13:31 | <Hyperbyte> I know ZIP about Debian though! :)
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| 13:32 | <gbaman_> hahaha, have a funny feeling will be rather similar in this area to Ubuntu
| |
| 13:32 | <Ano> but it changed a bit now the error message is nfsmount : need a path
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| 13:32 | <Hyperbyte> Yeah. What I just said about dhcpd config comes from my Ubuntu server.
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| 13:33 | <gbaman_> ok Ano revert back to the backup of the config file
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| 13:33 | <Hyperbyte> Ano, right, because your server is still trying to use NFS.
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| 13:33 | <Ano> 'K
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| 13:33 | <gbaman_> his dhcpd file Hyperbyte though have "option root-path "/opt/ltsp/i386";"
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| 13:33 | *has
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| 13:34 | which is pointing to NFS
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| 13:35 | <Ano> Consequently should I replace it by /var/lib/tftpboot ?
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| 13:35 | <Hyperbyte> Ano, no
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| 13:35 | <gbaman_> whew
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| 13:35 | alkisg is here
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| 13:35 | <Hyperbyte> root-path is for NFS. If you want NBD, you don't need option root-path.
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| 13:35 | <alkisg> Haha
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| 13:35 | <Ano> ^^
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| 13:35 | <Hyperbyte> Heh
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| 13:35 | * alkisg checks the irclogs... | |
| 13:35 | <Hyperbyte> !alkisg
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| 13:35 | <ltsp> alkisg: The LTSP oracle. Our beacon of hope in the world of LTSP. With the guidance of this divine emperor, we shall prevail.
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| 13:36 | <alkisg> Hypey, root-path is also for NBD, it defines the NBD share name
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| 13:36 | <Ano> Ok so "#" before root-path
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| 13:36 | <gbaman_> alkisg: simply ano is trying to set up thin clients
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| 13:36 | <alkisg> I.e. [/opt/ltsp/i386] in the .conf file
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| 13:36 | <Hyperbyte> Ano, pastebin your /var/lib/tftpboot/ltsp/i386/pxelinux.cfg/default
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| 13:36 | <gbaman_> we were trying with NBD
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| 13:36 | image built fine
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| 13:36 | <Hyperbyte> alkisg, really? I've never used root-path with NBD.
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| 13:36 | <gbaman_> oh and Debian wheezy
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| 13:36 | <Hyperbyte> Debian-only thing?
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| 13:36 | <Ano> I let gbaman_ explains ; I copy / paste
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| 13:36 | <alkisg> Hyperbyte: it defaults to [/opt/ltsp/i386] if unset
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| 13:37 | <Hyperbyte> alkisg, so it's not needed. :-)
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| 13:37 | <alkisg> Erm, ok
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| 13:37 | I have many images, I do need it
| |
| 13:37 | <Hyperbyte> Yeah, but you're special.
| |
| 13:37 | <3
| |
| 13:37 | * alkisg always felt special inside :P | |
| 13:37 | <gbaman_> now needing to point the clients to booting NBD instead of NFS
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| 13:37 | <alkisg> Is Ubuntu 14.04 out yet?
| |
| 13:38 | <gbaman_> nope
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| 13:38 | well, not on main download page yet
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| 13:39 | <Hyperbyte> alkisg, does 14.04 work out of the box with LTSP? :-)
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| 13:39 | <gbaman_> oh, and Ano's dhcpd file http://pastebin.com/RWF0GFsW
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| 13:39 | have basically got as far as ltsp-update-image --config-nbd
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| 13:40 | <alkisg> Dunno, it was broken until a week ago but stgraber uploaded the latest upstream patches, so I'm guessing it'll work now
| |
| 13:40 | <Ano> http://pastebin.com/XUxFAMMC
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| 13:40 | <alkisg> gbaman_: did you change BOOT_METHODS?
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| 13:40 | <gbaman_> no?
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| 13:40 | never heard of it
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| 13:40 | <Ano> !ping
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| 13:40 | <ltsp> pong
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| 13:40 | <gbaman_> :)
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| 13:40 | <Ano> thanks x)
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| 13:41 | <alkisg> gbaman_: pastebin your pxelinux.cfg/default, or whatever else your clients are using to get the kernel command line
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| 13:41 | <gbaman_> not mine, Ano's
| |
| 13:42 | although I do want your help for NBD with Pis, that can wait though
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| 13:42 | <Hyperbyte> Ano, change the top lines (default, timeout) from ltsp-NFS to ltsp-NBD
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| 13:42 | <alkisg> Ah, we're helping Ano first? Let me check the irclogs...
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| 13:43 | <gbaman_> :)
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| 13:43 | <Ano> We are dealing with that since two o'clock goog luck ^^
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| 13:43 | <gbaman_> I was summarising everything we have done with Ano so far alkisg
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| 13:43 | <Hyperbyte> Ano, I think if you just edit those two lines, you're set.
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| 13:44 | Reboot client afterwards.
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| 13:44 | <gbaman_> where is tftpboot again?
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| 13:44 | <Hyperbyte> /var/lib/tftpboot/
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| 13:44 | <gbaman_> why does everything have to be everywhere with LTSP on linux!
| |
| 13:44 | why cant we use 1 folder...
| |
| 13:44 | <Hyperbyte> gbaman_, it's not how Linux works.
| |
| 13:44 | <Ano> Because there is other people
| |
| 13:44 | <gbaman_> or even have a page with where everything is!
| |
| 13:45 | a single reference page
| |
| 13:45 | <Hyperbyte> gbaman_, Linux uses /usr/ for software, /var/ for data, /etc/ for configuration.. it's same with all other Linux software.
| |
| 13:45 | <gbaman_> there are lts.conf files everywhere
| |
| 13:45 | <Hyperbyte> gbaman_, why don't you create one? We have a public wiki.
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| 13:45 | <alkisg> Ano, go ahead with what Hyperbyte suggested about the ltsp-NFS => ltsp-NBD change
| |
| 13:45 | <Hyperbyte> The Oracle approves!
| |
| 13:45 | All hail alkisg!
| |
| 13:45 | * Hyperbyte bows down | |
| 13:45 | <alkisg> :P
| |
| 13:46 | <Ano> I'm rebooting the server then booting client
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| 13:46 | <Hyperbyte> Ano, no!
| |
| 13:46 | Don't reboot server.
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| 13:46 | <Ano> Amen Hyperbyte
| |
| 13:46 | <Hyperbyte> This is not Windows.
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| 13:46 | <alkisg> I really have to write a good !Hyperbyte factoid...
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| 13:46 | <Ano> Fuck
| |
| 13:46 | <gbaman_> ..
| |
| 13:46 | <Hyperbyte> Linux you only reboot for a) kernel upgrades or b) hardware upgrades.
| |
| 13:47 | <Ano> well what could be the problem right now ?
| |
| 13:47 | <gbaman_> ?
| |
| 13:47 | <Hyperbyte> Well, rebooting doesn't hurt........ but it's not necessary. ;-)
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| 13:47 | <alkisg> BOOT_METHODS is what controls the ltsp-NFS => ltsp-NBD order, we'll get to that if doing it manually makes it work...
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| 13:48 | <Ano> suspens
| |
| 13:48 | <alkisg> 12:44<Ano> Nope my thin clients are under 32 bit 12:44<gbaman_> there goes ltsp-pnp ==> His server is a Pentium D with 1 GB RAM, it can't do 64bit either
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| 13:48 | <gbaman_> he said was 64 bit?
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| 13:48 | <alkisg> Pentium D's are 64 bit?
| |
| 13:49 | ...whatever, it's so lame it won't really work as a server for thin clients....
| |
| 13:49 | Installing 64bit or 32bit on it won't make any difference
| |
| 13:49 | <gbaman_> when did he say was pentium D?
| |
| 13:49 | <alkisg> Yesterday
| |
| 13:49 | <gbaman_> ah
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| 13:49 | <Ano> gbaman_: yesterday
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| 13:49 | <gbaman_> should be going down fat client road then
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| 13:49 | well
| |
| 13:50 | <alkisg> Ano: we're waiting for your feedback, after editing /var/lib/tftpboot/ltsp/i386/pxelinux.cfg/default, ok?
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| 13:50 | <gbaman_> if clients are decent
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| 13:50 | <alkisg> Like Hyperbyte said
| |
| 13:50 | He'd need to put RAM to his clients, but yeah that's what I suggested too
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| 13:50 | <Ano> ok I have the same error message than earlier
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| 13:50 | <gbaman_> ok, error being?
| |
| 13:50 | <Hyperbyte> Ano, pastebin your /var/lib/tftpboot/ltsp/i386/pxelinux.cfg/default again
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| 13:50 | <Ano> "NFS over TCP not available on -ip.of.the.server"
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| 13:50 | http://pastebin.com/XUxFAMMC
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| 13:50 | <gbaman_> this isnt NFS?
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| 13:51 | <Ano> woops that's old default
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| 13:51 | <Hyperbyte> Ano, yeah.. let us see the new one. :)
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| 13:51 | <Ano> ok wait
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| 13:53 | <alkisg> Ano, before trying to switch from NFS to NBD, did you get the clients up and running?
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| 13:53 | <gbaman_> there had been that initial error
| |
| 13:54 | <Ano> Yes alkisg the client is starting, then taking an ip bye the dhcp and nfs error
| |
| 13:54 | no more the "insert disk a press enter" that I had yesterday
| |
| 13:54 | <alkisg> Ano: I mean, why switch to NBD? If you couldn't make the defaults in Debian work, you're only making it worse
| |
| 13:55 | NBD makes fat clients faster, it doesn't make much difference for thin clients, and you want to use thin clients
| |
| 13:55 | <Ano> that is true
| |
| 13:55 | Do you mean that I won't be able to boot the client at all ?
| |
| 13:56 | <alkisg> I mean you're following the wrong way to troubleshoot this
| |
| 13:56 | <Ano> Doh ! x(
| |
| 13:56 | <gbaman_> had assumed that there was a firewall issue or something so thought trying NBD may work instead?
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| 13:56 | <alkisg> If you have problem "A", you first need to solve problem "A", not go with "route B"....
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| 13:57 | <gbaman_> had also assumed NBD was a simple command to switch :)
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| 13:57 | <alkisg> If everything's working, sure, but switching the boot method might hide the actual problem being anywhere else
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| 13:59 | <Ano> Ok so should I summarized what I've done all the day ? To identify the problem
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| 14:00 | <alkisg> I don't have much time currently... so personally I won't be able to help much... since you've already started with NBD, do what Hyperbyte said....
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| 14:00 | Pastebin your new pxelinux.cfg/default etc
| |
| 14:00 | <Ano> http://pastebin.com/PK9sT9Bx
| |
| 14:02 | <alkisg> And the client reports a problem with NFS? Does it get a busybox? If yes, what's the output of `cat /proc/cmdline` there?
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| 14:05 | <Ano> all the output ?
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| 14:07 | "ro initrd=initrd.img-3.2.0-4-486 init=/sbin/init-ltsp quiet root=/dev/nfs ip=dhcp boot=nfs BOOT_IMAGE=vmlinuz-3.2.0-4-486 BOOTIF=macaddress"
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| 14:07 | <alkisg> So the change didn't take effect
| |
| 14:07 | Maybe it's reading some other file, depending on your tftpd...
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| 14:10 | <Hyperbyte> Ano, you did turn off and reboot the client?
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| 14:11 | <Ano> the tftpd service looks running but I do not find conf files
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| 14:11 | Hyperbyte: yes many times between each steps we made
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| 14:13 | <Hyperbyte> Ano, on Ubuntu it's /etc/default/tftpd-hpa.conf
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| 14:13 | <Hyperbyte> Not sure if that's a Ubuntu thing or if Debian does the same.
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| 14:13 | You could run find /etc/ -type f -name "*tftpd*"
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| 14:13 | Shows all files in the /etc/ config directory with 'tftpd' in the name
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| 14:15 | In the config file should be a directory where tftpd finds it's files.
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| 14:16 | <Ano> Thanks for the search command
| |
| 14:16 | although you were right about the localisation in /etc/default/ I seacrhed in /etc/tftp. . .
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| 14:17 | I'm reading a report of bug about that problem
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| 14:17 | <MattH_> Anybody around to help with a confusing edubuntu ltsp sound issue?
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| 14:19 | <Hyperbyte> !ask
| |
| 14:19 | <ltsp> ask: Don't ask to ask a question, simply ask it, and if someone knows the answer, they'll respond. Please hang around for at least a full hour after asking a question, as not everybody constantly monitors the channel.
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| 14:20 | <Hyperbyte> :)
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| 14:23 | <Ano> That's better than Mister V
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| 14:23 | <korilius> hello everyone
| |
| 14:25 | I wanted to stop by and give vagrantc my personal thanks for providing information that allowed my ltsp client to finally boot up.
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| 14:28 | <alkisg> Nice :) vagrantc usually shows up a few hours later
| |
| 14:28 | * Ano is full of hope it finally can work | |
| 14:28 | <Ano> sorry for my english at this time ^^
| |
| 14:29 | <MattH_> So here is my question and help needed. I have an ltsp lab that is currently running edubuntu (Ubuntu 12.04.4), around 34 lab machines. We have two servers that controls the labs thin clients. One of our servers is giving us an issue with sound. After doing a couple of standard updates on both the server and chroot, we updated the kernels and the image and restarted our lab. When the machines for one of the servers finally booted up,
| |
| 14:30 | The output is shown as "Dummy output", we have no idea what to do. Since both me and my coworker inherited this lab and only have basic linux understanding.
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| 14:34 | <Hyperbyte> MattH_, pulseaudio has a "dummy output" if it doesn't find or can't access any soundcards.
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| 14:35 | MattH_, are you using fat or thin clients?
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| 14:38 | <MattH_> We are using thin clients.
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| 14:39 | <Ano> I found this : https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=519325 and many documentation with the error problem. I'll work on it, correct the bug and finally come back if the bug persists or for the next one.
| |
| 14:45 | <MattH_> Is there anyway to make pulseaudio find the soundcard or restart the service? We had this same issue with the other server that controls the other half of the ltsp lab, but we updated it and restarted the server and it fixed the issue.
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| 14:45 | <Dave_N> hello
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| 14:53 | <MattH_> Hyper, we might be running fat clients. I have no idea. Going through a bunch of old notes left from who we inherited it from.
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| 15:06 | <Hyperbyte> MattH_, open a terminal on the client and type "hostname". Do you see the name of the server, or the name of the client (something like ltsp128)?
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| 15:15 | <MattH_> I get ltsp22 as a hostname. So I'm assuming they are fat clients?
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| 15:43 | <korilius> Anybody on here that use Debian LTSP with WYSE terminals? Having some trouble getting X to work with a V90
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| 15:43 | <korilius> The V90 boots up fine but gets a scrambled screen with X starts
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| 15:48 | <Ano> good bye ! Thanks for the support
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| 16:38 | <alkisg> (05:25:32 μμ) korilius: I wanted to stop by and give vagrantc my personal thanks for providing information that allowed my ltsp client to finally boot up.
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| 16:39 | <vagrantc> aw
| |
| 16:39 | * vagrantc has been a bit mia lately | |
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| 16:44 | <MattH_> Ok good news. After updating the server that was having issues. Making sure all the services were running and going through a couple pulseaudio troubleshooting guides. It seems that updating again server/chroot, updating the kernel and updating the image, then finally restarting. Finally fixed our issue. We no longer have the dummy output anymore. Its picking up the sound.
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| 19:42 | <gbaman> hey alkisg and vagrantc here is one for you both, NBD on pis? Worth it?
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| 19:42 | <alkisg> gbaman: what's the size of the chroot?
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| 19:44 | <gbaman> apparently about 4gb
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| 19:44 | <gbaman> dont forget, pis are 100mbit ethernet ports
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| 19:44 | <gbaman> and I am keeping in mind that it will be schools using this, many being given old networking gear
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| 19:45 | am surprised it is that big, but I guess there is a lot in it
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| 19:46 | <alkisg> It sounds like it's worth it
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| 19:46 | <gbaman> does it require any extra processing power on the pi side?
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| 19:46 | <alkisg> Only a bit, worth the trouble
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| 19:46 | <gbaman> ok
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| 19:46 | how much does it normally decrease network traffic by?
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| 19:46 | roughly?
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| 19:47 | <alkisg> 2.5
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| 19:47 | <gbaman> ..
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| 19:47 | thats impressive!
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| 19:47 | <vagrantc> alkisg: so, x11vnc has an RC bug that would result in epoptes getting removed...
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| 19:47 | <alkisg> vagrantc: ouch
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| 19:47 | <vagrantc> alkisg: http://packages.qa.debian.org/e/epoptes.html
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| 19:48 | <alkisg> They don't plan on fixing it?
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| 19:48 | <vagrantc> alkisg: the maintainer hasn't commented on the bug last i looked... :(
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| 19:48 | appears to be a patch...
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| 19:51 | <alkisg> So the actual issue is that there's no maintainer to apply the x11vnc patch?
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| 19:53 | * alkisg hopes he'll be able to attend debconf this year, and get enough key signatures to apply for a DM... | |
| 19:53 | * vagrantc too | |
| 19:53 | <gbaman> signatures? dm?
| |
| 19:54 | <alkisg> Yeah my id and passport and everything apparently aren't good enough to certify that it's me...
| |
| 19:54 | So I need to get signatures to my gpg keys in order to do that, before applying to become a debian maintainer...
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| 19:54 | <gbaman> ahh
| |
| 19:55 | so basically real debian maintainers need to actually in person verify you exist and you are who you say you are
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| 19:55 | <alkisg> It does sound silly to me, at least for persons willing to provide all the formal legal papers about their identity
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| 19:55 | <gbaman> yea..
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| 19:55 | <alkisg> Yeah
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| 19:55 | <gbaman> sigh
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| 19:56 | ok, so NBD on pis, how does one enable it on the pi side?
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| 19:56 | <gbaman> I have enabled it on the server
| |
| 19:56 | so I now have a compressed NBD image
| |
| 19:56 | <alkisg> The client needs this as a kernel parameter: append ro initrd=initrd.img init=/sbin/init-ltsp root=/dev/nbd0
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| 19:57 | Put it wherever the client gets it kernel cmdline from
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| 19:57 | <vagrantc> edit /opt/ltsp/armhf/etc/ltsp/update-kernels.conf
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| 19:57 | <alkisg> It's usually in pxelinux.cfg/default, no idea about pi
| |
| 19:57 | <gbaman> that sounds surprisingly easy...
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| 19:57 | <vagrantc> gbaman: you'll also need to update a bunch of stuff
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| 19:57 | <gbaman> ..
| |
| 19:57 | ok
| |
| 19:57 | like?
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| 19:58 | <vagrantc> gbaman: ltsp-chroot --arch=armhf /usr/share/ltsp/update-kernels
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| 19:58 | gbaman: ltsp-update-kernels
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| 19:58 | gbaman: make sure the pxelinux.cfg files got updated
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| 19:58 | gbaman: might have to re-run ltsp-update-image
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| 19:58 | <gbaman> joy
| |
| 19:59 | I currently have this in my cmdline.txt file on sd cards
| |
| 19:59 | boot=nfs init=/sbin/init-ltsp nfsroot=10.0.5.155:/opt/ltsp/armhf
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| 19:59 | with 10.0.5.155 being the address of my test server
| |
| 19:59 | * alkisg wonders if the PIs get their cmdline from local storage, or from tftp | |
| 19:59 | <gbaman> local
| |
| 19:59 | <vagrantc> oh, then just edit the local thing
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| 20:00 | <gbaman> I do still need to somewhere in the cmdline.txt file tell it the address of the server, right?
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| 20:00 | <alkisg> Normally no, it does a dhcp for that
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| 20:00 | <gbaman> I did before?
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| 20:01 | <alkisg> Try with this first, if it doesn't work, then you can put the ip too: init=/sbin/init-ltsp root=/dev/nbd0
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| 20:02 | If it doesn't work, *then* add: nbdroot=10.0.5.155:/opt/ltsp/armhf
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| 20:02 | But it shouldn't be needed, the best is to keep the cmdline as simple as possible
| |
| 20:02 | So as to have the same cmdline for any arch, without caring about the IP of the server, etc etc
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| 20:02 | <vagrantc> gbaman: looks like a bunch of the firmware files are now shipped in raspbian as a package
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| 20:03 | <gbaman> failed
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| 20:03 | <vagrantc> gbaman: so can probably simplify your build scripts...
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| 20:03 | <alkisg> Message?
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| 20:03 | <gbaman> no init found?
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| 20:03 | photographing, 2 sec
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| 20:04 | <alkisg> You do have ltsp-client installed in the sd card, i.e. the initrd image does have the ltsp-related stuff, like nbd support, right?
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| 20:05 | <gbaman> entire cmdline.txt file
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| 20:05 | dwc_otg.lpm_enable=0 console=ttyAMA0,115200 kgdboc=ttyAMA0,115200 console=tty1 init=/sbin/init-ltsp root=/dev/nbd0 elevator=deadline rootwait
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| 20:05 | https://dl.dropboxusercontent.com/u/1122948/temp/ltsp-4.JPG
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| 20:07 | <alkisg> OK try adding the nbdroot parameter above ^
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| 20:09 | Ah it's because my udhcp script doesn't get triggered on debian without ipappend 3, ok
| |
| 20:09 | <gbaman> it is finding it
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| 20:09 | there we go
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| 20:09 | booting :)
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| 20:09 | <alkisg> Cool, start benchmarks :)
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| 20:10 | <gbaman> working on it :)
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| 20:11 | <alkisg> vagrantc: you never replied about the "having a scripts/top/ltsp-hack script, that diverts ipconfig to ipconfig.real, and creates an ipconfig wrapper that fixes all those issues like missing NBD rootpath etc" idea... If you'd accept that upstream, I think it would be much more stable that what we currently have...
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| 20:12 | The wrapper would basically fill missing values in net-eth0.conf with the defaults
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| 20:12 | <gbaman> interestingly alkisg we still have that 30 second pause..
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| 20:12 | <alkisg> And we could request maks to provide a hook in initramfs-tools to do that more formalyl in the future..
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| 20:12 | <vagrantc> alkisg: hmmm...
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| 20:12 | <alkisg> gbaman: that's dns related
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| 20:13 | <gbaman> ok?
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| 20:13 | NBD 1:37 to login screen
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| 20:13 | including a weird 30 second pause
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| 20:13 | <alkisg> gbaman: subtract 30 seconds to all your benchmarks, till you resolve the DNS issues
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| 20:13 | <vagrantc> alkisg: and it only divertes ipconfig at runtime if we're booting ltsp?
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| 20:14 | <alkisg> Yup
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| 20:14 | <vagrantc> alkisg: could also replace the udhcp stuff with it, yes?
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| 20:14 | <alkisg> Yes, I'd like to completely remove the need for udhcp
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| 20:15 | The only reason I got into writing that script, was to fill the missing bits from proxydhcp servers or cases like the one gbaman has now
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| 20:15 | <vagrantc> alkisg: sounds... messy but probably better than what we have.
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| 20:15 | <alkisg> Yes, currently we have very messy code because it tries to bring up network interfaces at the wrong place, before udev is done initializing them
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| 20:15 | <gbaman> :)
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| 20:16 | erm?
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| 20:16 | <alkisg> While then we wouldn't care at all about interfaces, we'd only fill in the missing bits and let initramfs tools handle the static/dhcp ips etc
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| 20:16 | <gbaman> 1:37 for NBD, 1:39 for NFS...
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| 20:16 | <alkisg> gbaman: launch firefox or libreoffice
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| 20:16 | Boot time isn't very important
| |
| 20:16 | Also, are you sure you used compressed nbd?
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| 20:17 | Try `du -sh chroot` and `ls -l pi.img`, it should be 2.5 times smaller
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| 20:18 | <gbaman> where is the image stored?
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| 20:18 | <alkisg> /opt/ltsp/images
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| 20:19 | vagrantc: what we need is a hook right after ipconfig runs, and before the nfs/nbd script sources net-eth0.conf. Initramfs-tools should provide one (and we should request it), but until it does, we only need the hack in order to produce a hook
| |
| 20:19 | So it's not as messy as it sounds, it's just because initramfs-tools doesn't have that hook
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| 20:19 | <gbaman> 1.2G armhf.img
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| 20:19 | <gbaman> 4.1G armhf
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| 20:19 | so is smaller
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| 20:19 | by quite a bit
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| 20:20 | will try libreoffice launching test :)
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| 20:20 | <alkisg> Cool, now time launching firefox/libreoffice
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| 20:20 | The first time the test is more accurate, because it doesn't involve caching,
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| 20:21 | if you want to test again without cache, you could try: `echo 3 > /proc/sys/vm/drop_caches` on the client before re-launching libreoffice
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| 20:21 | (locally, as root)
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| 20:21 | <gbaman> forgot how long libreoffice takes!
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| 20:22 | 40 seconds on NFS
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| 20:22 | <||cw> you have rpi booting using nbd?
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| 20:22 | I'd think as slow as the pi is, that compressed nbd would be slower
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| 20:22 | <gbaman> well thats what we are testing out ||cw
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| 20:23 | i may not be able to actually test the main use for NBD
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| 20:23 | a classroom
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| 20:23 | <alkisg> What the equivalent of PIs, cpu-wise, in the i386 world? Similar to a Celeron @500 MHz?
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| 20:24 | <||cw> if that
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| 20:24 | <gbaman> it is a tad slow :)
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| 20:24 | <alkisg> Celerons @300+ go faster with nbd than with nfs
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| 20:25 | I don't know if the decompressing code is more optimized for i386 vs armhf...
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| 20:25 | <gbaman> there are major optimisations being done for the Pi
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| 20:25 | <alkisg> Recently there was a vast improvement in squashfs decompression, like 2-3 times faster than before, I think we'll see it after 14.04/jessie though :(
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| 20:25 | <gbaman> things like the new maynard desktop, officially announced today http://www.raspberrypi.org/preview-the-upcoming-maynard-desktop/
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| 20:26 | thats a pretty fast and fluid looking desktop
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| 20:26 | has a long way to go
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| 20:26 | but shows what is possible
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| 20:27 | WOW!
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| 20:27 | libreoffice just loaded with NBD in 17 seconds...
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| 20:27 | whaat!
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| 20:27 | <alkisg> Similar to the celerons, good
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| 20:27 | <gbaman> 40 seconds on NFS
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| 20:27 | daaam!
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| 20:28 | * gbaman is going to move everything to NBD ASAP | |
| 20:28 | <alkisg> You can also use squashfs over NFS
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| 20:28 | It would be 10% slower than NBD, which is too little to really notice
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| 20:28 | I.e. maybe 19 seconds for libreoffice
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| 20:28 | <||cw> if I'm reading this right, it puts it around a P2 @300 http://www.roylongbottom.org.uk/linpack%20results.htm
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| 20:30 | <gbaman> I am proper amazed....
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| 20:30 | I think I really should test it with a local pi image too
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| 20:30 | <alkisg> !local-boot
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| 20:30 | <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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| 20:30 | <ball> What's a NBD?
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| 20:30 | <alkisg> gbaman: that ^ could help too
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| 20:31 | <vagrantc> then you've gotta maintain all the images locally...
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| 20:31 | <alkisg> It's 1 epoptes command to copy them :)
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| 20:31 | <||cw> gbaman: 100Mbit nic is only about 9MB/s, so if the NAND is faster than that....
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| 20:31 | <alkisg> Less trouble than maintaining regular local pi installations
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| 20:32 | gbaman: how many clients do you have? And, gigabit server or not?
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| 20:32 | <ball> Network Boot Device?
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| 20:32 | <alkisg> ball: Network Block Device
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| 20:32 | It's the method that Ubuntu uses to send the virtual disk to its clients
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| 20:33 | (ltsp clients)
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| 20:36 | <gbaman> sorry, back
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| 20:37 | wait, so you recommending storing images locally now?
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| 20:37 | <alkisg> Nope, I don't know your setup, I can't recommend anything
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| 20:37 | <gbaman> would NBD make wifi booting viable btw?
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| 20:37 | <alkisg> (11:32:15 μμ) alkisg: gbaman: how many clients do you have? And, gigabit server or not?
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| 20:37 | <gbaman> It isnt for a single setup
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| 20:38 | <alkisg> OK, answer generally then...
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| 20:38 | <gbaman> it is for classrooms that I have no control over
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| 20:38 | <alkisg> E.g. "about 20 pis, and usually gigabit server"
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| 20:38 | <gbaman> that
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| 20:38 | <alkisg> So if it's 50 pis, then it's worth it, if it's 10, nope
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| 20:38 | <gbaman> but would be good to account for 100mbit switches
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| 20:38 | <alkisg> For 20... hmm... not worth it unless it's automated
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| 20:39 | <gbaman> as that will be likely
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| 20:39 | <alkisg> For 20 clients and 100 mbit switch, it's worth it
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| 20:39 | <gbaman> what about something like rsync checking?
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| 20:39 | <alkisg> What's the output of `hdparm -t /dev/sdXXX` on the pi SD card?
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| 20:39 | <gbaman> we have an initrd on the sd cards
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| 20:39 | ltsp booted pi?
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| 20:39 | <alkisg> It doesn't matter
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| 20:39 | hdparm just reports the sd speed...
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| 20:40 | The boot method doesn't matter
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| 20:40 | The sd card might not be called 'sdXX' though...
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| 20:40 | <gbaman> hmm, will switch to a normal pi sd card
| |
| 20:41 | am booting this pi off a rather old 128mb sd card :)
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| 20:41 | <||cw> did they ever fix the pi's sd interface? used to be stupid slow, even with fast cards. usb flash was faster.
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| 20:41 | <gbaman> dont think it was fixable?
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| 20:42 | guess we will see
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| 20:43 | <||cw> I should see if I can this pcduino to work as a think client
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| 20:44 | <vagrantc> it's usually /dev/mmcblkN
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| 20:44 | pcduino? it's got a board attached to it?
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| 20:45 | <gbaman> hahaha, -bash: hdparm: command not found
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| 20:45 | apt getting
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| 20:45 | <||cw> it's an arm board with GPIOs that are more or less arduino compatible
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| 20:46 | <gbaman> pi has the community behind it
| |
| 20:46 | Timing buffered disk reads: 50 MB in 3.01 seconds = 16.59 MB/sec
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| 20:46 | thats on one of my main class 10 8gb sd cards
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| 20:47 | <alkisg> That's faster than 100 mbps
| |
| 20:48 | And, 20 clients on a gigabit network can only get up to 50 mbps,
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| 20:48 | and 20 clients on a 100 mbps network can only get up to 5 mbps, if they're all asking for data simultaneously
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| 20:48 | <gbaman> is that MB mb or mbit?
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| 20:48 | <alkisg> network speed is usually in bits
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| 20:48 | disk speed in bytes
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| 20:48 | <gbaman> ok
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| 20:49 | so on gigabit, should be way faster than SD card
| |
| 20:49 | <alkisg> No, because the pi has 100 mbps
| |
| 20:49 | Which is about 10 MB/sec
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| 20:49 | <gbaman> *gigabit switch
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| 20:49 | oh
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| 20:49 | <alkisg> (measuring the network overhead too)
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| 20:50 | So... what I want to do, is use dmcache to cache the network traffic that the client reads, locally
| |
| 20:50 | That way there's no need for rsync, and there's no extra network traffic involved for syncing
| |
| 20:50 | <gbaman> does need us to worry about the SD card
| |
| 20:50 | so will need a blank sd card
| |
| 20:51 | <alkisg> Not really, the init script just won't set up dmcache if there's no local disk/sd card
| |
| 20:51 | And, it can use an existing card without destroying its contents
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| 20:51 | Just creating a block file there
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| 20:51 | <gbaman> ok?
| |
| 20:51 | <alkisg> That will help ltsp in a *lot* of cases, where there are disks that outperform the local network
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| 20:51 | It just remains for someone to write that code... :)
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| 20:52 | <gbaman> installing libreoffice :)
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| 20:52 | haha
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| 20:52 | libreoffice takes a while :)
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| 20:56 | ok, next question
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| 20:56 | booting without IP address in parameters?
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| 20:58 | <alkisg> fix your dhcpd.conf
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| 20:58 | <gbaman> not running a DHCP server
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| 20:58 | proxydhcp?
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| 20:59 | <alkisg> The initramfs dhcp clients don't understand proxydhcp offers
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| 20:59 | <||cw> dhcp is awesome, you should run one :)
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| 20:59 | <alkisg> Also... I don't know where pi would use proxydhcp
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| 20:59 | It doesn't use pxe, does it?
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| 20:59 | <gbaman> nope
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| 20:59 | <alkisg> So why do you have proxydhcp?
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| 20:59 | You're not using it...
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| 20:59 | <gbaman> I dont?
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| 21:00 | <alkisg> I don't think that you do... :)
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| 21:00 | <gbaman> was just wondering if you could do it that way
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| 21:00 | <alkisg> Ah, I thought that you said that you used proxydhcp
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| 21:00 | What's your dhcp server? A router?
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| 21:00 | <gbaman> yip
| |
| 21:00 | or in many schools, untouchable
| |
| 21:00 | <alkisg> Same here...
| |
| 21:01 | <gbaman> haha, normal pi boots in 30 seconds..
| |
| 21:01 | <alkisg> Currently the only options to omit the server ip address when not using pxe, are: (1) to use AoE, or (2) to write some initramfs script
| |
| 21:01 | <gbaman> now, it isnt booting to a graphical login screen
| |
| 21:02 | others were about 1:30
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| 21:03 | 1:30 - weird NDS - 1:00
| |
| 21:03 | <alkisg> Initramfs adds a significant overhead
| |
| 21:03 | <gbaman> yea
| |
| 21:04 | and also thinking about it, I also have a 5 second countdown boot switcher in there too
| |
| 21:04 | so would put it at 45 seconds
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| 21:05 | testing libreoffice
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| 21:05 | 18 seconds
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| 21:05 | so same as NBD
| |
| 21:05 | that is interesting...
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| 21:06 | <alkisg> Did you drop the caches before launching it?
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| 21:06 | Otherwise you risk re-using the data read while installing libreoffice...
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| 21:06 | <gbaman> oh, ok
| |
| 21:06 | how do you drop the cache
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| 21:06 | <alkisg> See the "echo 3 >..." line I wrote you above
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| 21:06 | * alkisg waves, 'night all... | |
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| 21:08 | <vagrantc> SD cards are *slow*
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| 21:09 | <gbaman> vagrantc: I have noticed
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| 21:10 | although a lot of that will be the pi processing too
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| 21:15 | ok, rebooted pi
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| 21:15 | 15.5 seconds :(
| |
| 21:15 | still MASSIVE improvement though
| |
| 21:17 | <vagrantc> local or NBD?
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| 21:19 | <gbaman> local
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| 21:20 | that was a normal Raspbian SD card image
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| 21:20 | that the Pi foundation provide
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| 23:21 | <Ryan52> Hey, I'm curious, do any devs know how LTSP handles disabling reboot/shutdown buttons in Unity (Ubuntu) nowadays?
| |
| 23:23 | <vagrantc> there used to be patches directly in GNOME, perhas the same idea was implemented in unity?
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| 23:23 | er, patches to Ubuntu's GNOME, that is
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| 23:26 | <Ryan52> yuck
| |
| 23:26 | vagrantc: I was hoping to find out a more elegant solution, if somebody had found one, but I guess there is not. Thanks! :)
| |
| 23:29 | <vagrantc> just looking to hide the buttons for some other purpose?
| |
| 23:29 | <Ryan52> yep
| |
| 23:29 | vagrantc: somebody else was looking for a way, so I thought I might be able to find a solution for them.
| |
| 23:30 | vagrantc: Sergio sas hi
| |
| 23:30 | <vagrantc> maybe consolekit or something?
| |
| 23:30 | or whatever it's been replaced with, 12 times removed
| |
| 23:30 | * vagrantc waves | |
| 23:30 | <Ryan52> right
| |