IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 5 February 2011 (all times are UTC)
| 00:02 | alkisg has joined #ltsp | |
| 00:08 | <root__> hi... Login Incorrect help???
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| 00:17 | <alkisg> root__: distro/version?
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| 00:19 | <root__> ubuntu 10.04
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| 00:20 | <alkisg> Try: sudo ltsp-update-sshkeys && sudo ltsp-update-image
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| 00:20 | <root__> ok..
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| 00:21 | is it necessary to connect to internet for this...
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| 00:22 | <alkisg> No
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| 00:24 | <root__> alkisg:: why .. this problem occurs..
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| 00:25 | <alkisg> *If* it's solved after those commands, then the problem is that you changed the server IP
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| 00:25 | <root__> cause i have installed this filesystem fresh..
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| 00:25 | <alkisg> So you needed to update the ssh keys for the chroot
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| 00:26 | <root__> ok.. any need to restart DHCP server,..
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| 00:28 | <alkisg> No
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| 00:29 | <root__> i did this.. but noiw have problem.. unable to start X-server
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| 00:31 | <alkisg> This means that your chroot was modified since the last time that you run ltsp-update-image... is this really a fresh installation?
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| 00:31 | What's the actual error message that you see?
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| 00:31 | <root__> yes..
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| 00:32 | xserver failed. press enter to continue
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| 00:33 | <alkisg> Can you put your lts.conf to pastebin?
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| 00:33 | !pastebin
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| 00:33 | <ltspbot> alkisg: "pastebin" :: the LTSP pastebin is at http://ltsp.pastebin.com. Please paste all text longer than a line or two to the pastebin, as it helps to reduce traffic in the channel. Don't forget to paste the URL of the text here.
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| 00:34 | <alkisg> Both your /var/lib/tftpboot/ltsp/i386/lts.conf and your /opt/ltsp/i386/etc/lts.conf
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| 00:39 | <root__> there is no lts.conf in /var/lib/tftpboot/ltsp
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| 00:40 | <alkisg> OK, the other one then
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| 00:40 | <root__> ok..
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| 00:44 | <root__> here is my lts.conf. http://ltsp.pastebin.com/dFhMt8YE
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| 00:45 | <alkisg> Why are you using SCREEN_01=startx?
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| 00:45 | And why are you using this file, instead of /var/lib/tftpboot etc?
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| 00:45 | And why is this file so old, i.e. 2003?
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| 00:46 | Are you using LTSP 5.2 that comes with Ubuntu 10.04? Or you're the one that was using LTSP 4?
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| 00:47 | <root__> actually.. i had tried using LTSP-4.2 .. and i applied same options fot this also..
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| 00:47 | <alkisg> So now you're using LTSP 5.2?
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| 00:47 | <root__> yes..
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| 00:48 | can you give mi running lts.conf
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| 00:48 | <alkisg> OK. When you first opened that file there was a big warning that said "Don't use the file, it's no longer used from here"
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| 00:48 | <root__> or how to create it???
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| 00:49 | which file???
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| 00:49 | <alkisg> Here is the original /opt/ltsp/i386/etc/lts.conf file: http://pastebin.com/N5jAV22T
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| 00:50 | Put it in your chroot, replacing the one you have now, and run `sudo ltsp-update-image` again.
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| 00:50 | <root__> yes i have this ... i have stored as a bachup file..
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| 00:51 | you mean replace lts.conf/???
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| 00:51 | <alkisg> Yes
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| 00:51 | <root__> in /opt.... path???
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| 00:51 | <alkisg> Yes
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| 00:51 | <root__> ok...
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| 00:54 | i done it but no content appear in file..
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| 00:55 | <alkisg> Right. See the notice that it says?
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| 00:55 | # **** THIS FILE SHOULD NO LONGER BE USED FROM HERE !!! ****
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| 00:55 | Now try: sudo ltsp-update-image
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| 00:55 | and reboot the client
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| 00:56 | <root__> thanks... alkisg it works...
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| 00:57 | now i can login into...
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| 00:57 | <alkisg> If you need to put anything in lts.conf, create a new file in /var/lib/tftpboot/ltsp/i386/lts.conf
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| 00:57 | <muppis> 4.2 should be erased from internet.
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| 00:57 | <root__> thank you very much..???
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| 00:57 | yes.. but i had got its source code.. and i used it...
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| 00:57 | <alkisg> 4.2 is fine if one has clients with 16 or 32 mb ram. But only then... :)
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| 02:49 | <muppis> alkisg, do you have any experience from bluetooth on client?
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| 04:29 | <markit> hi, do I need to rebuild chroot if I modify (create) /etc/ltsp/nbdswapd.conf? and if I modify /var/lib/tftpboot/ltsp/i386/lts.conf?
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| 04:29 | (I want to enable swap and assign 512MB)
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| 04:30 | <muppis> I'm not sure about nbdswap.conf, but no need for update after lts.conf modify.
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| 04:31 | <markit> muppis: any idea about how to check if nbdswap is succesfully enabled?
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| 04:32 | alkisg has joined #ltsp | |
| 04:32 | <markit> well, maybe I'd better googling first :)
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| 04:32 | <muppis> markit, alkisg is right guy to say that. Haven't used that.
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| 04:33 | <markit> muppis: in fact I'm applying a pair of his suggestions, lol, but now I've some dubt
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| 04:33 | <alkisg> muppis: no experience with bluetooth
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| 04:33 | <markit> and did not noticed he is online
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| 04:33 | <alkisg> markit: you don't need to run ltsp-update-image
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| 04:33 | <markit> hi alkisg, I'm experimenting with bdsdwap you suggested me 2 days ago
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| 04:34 | <alkisg> !localxterm
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| 04:34 | <ltspbot> alkisg: "localxterm" :: while sitting on a thin client, open a gnome terminal. In that, run: ltsp-localapps xterm. An xterm will open. That xterm runs locally, so any commands you enter there are executed directly on the client.
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| 04:34 | <alkisg> To verify that your swap is working, run "free" in a localxterm
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| 04:34 | <markit> alkisg: so good, thanks a lot
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| 04:35 | <muppis> alkisg, ok. I think I've give up with ltsp in htpc. Need for local hw comes so high so it easier install locally.
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| 04:36 | <markit> alkisg: btw, never tried to add 2 nics torward ltsp clients switch, and use bounding?
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| 04:36 | so you can double bandwidth (1+1gbit)
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| 04:36 | I know nothing about bounding, wondering if switch needs some special feature to support it
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| 04:36 | <muppis> markit, should work fine if your switch supoorts bonding.
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| 04:37 | <markit> muppis: oh, how can I tell? some iee_something to look at?
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| 04:37 | <muppis> markit, yes.
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| 04:38 | <markit> muppis: ok, I will google later, thanks for the tip
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| 04:39 | btw, with 14 clients running libreoffice writer, I had cpu 57%, and lan usage going up and down but up to 709KB/s, so not my issue, just asking
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| 04:39 | sorry, cpu 5%
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| 04:39 | ram 57%
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| 04:39 | swap 0
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| 04:40 | only problem are the old hardware with really slow graphic
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| 04:42 | wow, swap works :))
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| 04:43 | <NeonLicht> Where did tou put the swap file/partition?
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| 04:43 | <markit> going to school to apply my new script and alkisg modifications
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| 04:43 | NeonLicht: ugh... do I have to specify?
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| 04:43 | <NeonLicht> markit: Don't you?
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| 04:43 | <markit> in the host I have /swap in sda
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| 04:44 | do I have to specify for bbd too?
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| 04:44 | <NeonLicht> So, do you have a local swap partition?
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| 04:45 | <markit> reading google seems it uses /var/opt/ltsp/swapfiles
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| 04:46 | buy can't find in kubuntu 10.10
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| 04:46 | <alkisg> (12:36:46 PM) markit: alkisg: btw, never tried to add 2 nics torward ltsp clients switch, and use bounding? ==> yes, I wrote my experience in https://help.ubuntu.com/community/UbuntuLTSP/Trunking
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| 04:46 | 4 nics, ==> 4x100 mbps = 400 mbps bandwidth
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| 04:47 | <markit> wow, thanks. Any answer to NeonLicht question about swap location?
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| 04:47 | <alkisg> The ltsp swap files are created in /tmp
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| 04:48 | <markit> alkisg: you really know ltsp inside and out
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| 04:49 | <NeonLicht> So, swap is using swap files on the server, right?
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| 04:49 | <alkisg> NBD_SWAP yes. USE_LOCAL_SWAP, no
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| 04:49 | USE_LOCAL_SWAP uses any locally available swap partitions
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| 04:50 | <markit> how can you specify that local partition?
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| 04:50 | <alkisg> Create? or specify?
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| 04:50 | <markit> I've installed PXE on the internal HD
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| 04:50 | well, with fdisk I can create a swap partition
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| 04:50 | <alkisg> You don't need to specify it, it's autodetected if it exists
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| 04:50 | <NeonLicht> And so, my question for markit was what type of swap he was using, whether he set up a local swap partition/file or a remote (on server) swap file, or what.
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| 04:51 | <markit> but how can I tell ltsp where it is? (i..e /dev/sda)
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| 04:51 | <alkisg> (12:51:13 PM) alkisg: You don't need to specify it, it's autodetected if it exists
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| 04:51 | <markit> alkisg: hehe, while typing I can't read, sorry :)
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| 04:52 | <muppis> markit, using onscreen keyboard?
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| 04:52 | <markit> so next time I have old clients to setup, I will create a swap partition
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| 04:52 | muppis: no, hitting "enter" before look again at the chat window
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| 04:52 | muppis: my english is really low level, apologise
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| 04:53 | s/can't/don't
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| 04:53 | <muppis> markit, well, it ain't my native as well.
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| 04:53 | <alkisg> markit: https://help.ubuntu.com/community/UbuntuLTSP/GParted
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| 04:53 | This might help
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| 04:55 | <markit> alkisg: oh, thanks a lot
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| 04:56 | "For clients with only 64MB RAM, you might want to add " mine are all > 256, do you think that adding swap (nbd one) is really needed?
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| 04:57 | maybe the problem was due to different reasons (I was unable to reproduce)
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| 04:57 | <alkisg> The NBD swap file I suggest there is only used during the resize operation
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| 04:57 | For 256 RAM it shouldn't be necessary
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| 04:58 | <markit> "resize" operation of what?
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| 04:58 | windows maybe?
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| 04:59 | <alkisg> Yes, e.g. if you have 1 NTFS partition and you want to shrink it to make a 512MB swap partition
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| 05:02 | <markit> ok, some misunderstanding but at the end I've got thanks
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| 05:12 | <alkisg> markit: just to clarify, yes, I think that thin clients with 256 MB RAM do need swap space.
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| 05:12 | <markit> ah, I understood the opposite, thanks for the clarification
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| 05:12 | btw, shouldn't "LDM_LIMIT_ONE_SESSION=True" be the default?
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| 05:13 | if a client crashes, the students logs again but his files are still open in previous session
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| 05:13 | a big mess
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| 05:19 | mm "who" shows the user 3 times
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| 05:19 | pts/1 2 and 3, first two with IP, last with (ltsp128)
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| 05:20 | so don't think LDM_LIMIT_ONE_SESSION=True worked as expected
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| 05:21 | (if I slay him and re-log, I have only 2 lines as usual as result of "who" command)
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| 05:25 | mmm but kwrite is no more present after some time I "disconnected, switched off, reconnected and booted" the client (not logged in yet)
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| 05:25 | while "who" tells the user is still there
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| 05:25 | I'm confused
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| 17:27 | <Kyle__> Hello.
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| 17:28 | Anyone have some tricks for getting dpkg-reconfigure to build the right kernel modules when your ltsp-server is running a different kernel than your ltsp clients?
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| 17:56 | <trey__> oh man am I pulling my hair out over an issue anyone in here an ltsp guru?
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| 17:57 | i understand WHY I can't see the local drives on the clients but I can I if I WANT to
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| 17:58 | I can see CD and USB just fine... can anyone help?
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| 18:59 | <grasshopper__> QUESTION: My LTSP clients fail to login for clients which have their /home folders located elsewhere - for instance, we have some userids that have their hom in /localhome
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| 19:00 | We are using LTSP in EduBuntu - I was under the impression that once logged in, the clients were simply making an SSH desktop connection to the thin client server. Why should the location of the home folders make any difference (as long as they exist on the thin client server)?
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| 19:16 | <HrdwrBoB> it does
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| 19:16 | but it also mounts /home using ltspfs
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| 19:18 | <grasshopper__> Why does it mount /home if you have not set it to run any local apps?
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| 19:18 | By the way - thanks for answering :)
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| 19:19 | <stgraber> because localapps are enabled by default
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| 19:19 | edit your lts.conf (/var/lib/tftpboot/ltsp/i386/lts.conf)
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| 19:19 | <grasshopper__> OK - I was not aware of that - I did not set any of the LOCAL_APPS settings in my lts.conf
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| 19:19 | <stgraber> to contain:
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| 19:20 | LOCAL_APPS=False
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| 19:20 | (in the [default] section or for only a subset of your network, depends on your setup)
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| 19:21 | <grasshopper__> OK - I will give that a try. I have some user accounts on my thin client server that have home folders on /localhome. The user accounts that have home folders in /home work fine on the thin clients, but the users with home folders on /localhome do not...
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| 19:21 | <stgraber> current default is that if LOCAL_APPS is not explicitly set to false, it's considered as true (it's been like that for a while)
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| 19:22 | <grasshopper__> I also noticed that a /localhome folder is created locally on the thin client when I attempt to login with these users... which was puzzling
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| 19:22 | <stgraber> that's weird, I've been quickly looking at the code and I don't see anywhere where we expect $home to be /home/<something> ...
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| 19:23 | if everything worked as expected, it should create /localhome/<username> and mount it over sshfs
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| 19:23 | if it doesn't we have a bug somewhere
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| 19:26 | <grasshopper__> I did some sniffing around in the ltsp-client-setup scripts in /opt/ltsp/i386/etc/init.d and noticed there is a call to a configure_home script that had some code dealing with setting up /home folders
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| 19:29 | I have not figured it out completely yet - I am still learning about how the LTSP system works - the online HOWTOS are helpful, but it would be easier to debug if I actually knew how it worked :)
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| 19:30 | <HrdwrBoB> I am having trouble with clicfs
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| 19:31 | I altered the ext3 image
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| 19:31 | <grasshopper__> How do local apps work? If you are running on the thin client server through a SSH desktop connection, do your local apps simply run in a separate window locally? Is that why you need /home mounted on the workstation?
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| 19:31 | <HrdwrBoB> resized it using resize2fs -M, then used mkclicfs
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| 19:31 | but I keep getting journal aborted errors
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| 19:31 | and the filesystem fails
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| 19:31 | and stops working
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| 19:32 | <stgraber> grasshopper__: yes, localapps are installed directly in the chroot and show just like any other window, though it needs your home directory to be mounted to save data
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| 19:37 | <grasshopper__> stgraber__: OK - thanks for the info. Right now the client with home folders in /localhome log in and the desktop flashes for a moment and then the login screen returns. I will disable localapps to simplify matters first, they I will also take another look and see if /localhome/<username> is mounted over sshfs to the thin client server.
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