IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 30 November 2011 (all times are UTC)
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| 06:30 | <alkisg> Gadi: we could handle NBD_SWAP from the initramfs.d scripts inside the real file system, no need to do it in ltsp_nbd..
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| 06:31 | So I think that the only reason to keep ltsp_nbd is nbd-proxy, maybe we could make that part optional, as it's not even used by default now
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| 06:40 | Btw, suse had some patches to fake RW support for squashfs... if we had that, we'd no longer need aufs/overlayfs, nbd-server -c would suffice
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| 06:41 | (nbd-server -c suffices now if one uses an ext4 or even a compressed btrfs image)
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| 06:42 | And, with the `nbd-server -c` case, we could probably just have a /swap file in there, no need for NBD_SWAP either...
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| 06:44 | * alkisg wants to test squashfs vs compressed btrfs, if btrfs is close enough then ltsp-update-image and overlayfs won't be needed anymore | |
| 06:50 | <alkisg> Yoe: hi... about the ltsp/nbd interaction... I think the best place would be for you to source a script of us after configure_networking
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| 06:51 | This way we could even contact the ROOTSERVER and get lts.conf or whatever else we need
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| 06:51 | (before the mounting)
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| 06:54 | <alkisg> Yoe's local-top/nbd calls configure-networking, then `run-parts nbd-scripts.d` so it sources our hooks, and we have 2 hooks there, one for usual ltsp and one for nbd-proxy, which would mount itself the nbd root and then set NBDSERVER=127.0.0.1 for local-top/nbd to do the second mount
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| 06:56 | *NBDROOT
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| 06:58 | Or, yet another method that would add the flexibility we need... if local-top/nbd looked for a kernel parameter for where to find the nbd-client executable
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| 06:59 | So we could have nbd-client=/sbin/nbd-client.ltsp, or nbd-client=/sbin/nbd-client.proxy
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| 06:59 | And those script would get the nbd-client parameters and do whatever they wanted without having to have any other "interface" with local-top/nbd
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| 07:00 | (or better yet, from an environment variable, if defined, not from the kernel command line)
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| 07:01 | OK, yeah, so here's my final suggestion:
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| 07:01 | Yoe does this in local-top/nbd:
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| 07:01 | NBD_CLIENT=${NBD_CLIENT:-/sbin/nbd-client}
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| 07:01 | $NBD_CLIENT $nbdsrv $nbdport $nbdrootdev -persist
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| 07:02 | We don't need anything else from him
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| 07:02 | We do this in initramfs-tools/conf.d/ltsp:
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| 07:02 | NBD_CLIENT=/sbin/nbd-client.ltsp
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| 07:03 | And that takes care of -proxy too, conditionally. It even has access to lts.conf, to decide if it wants to do it or not.
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| 07:03 | So we *only* need that in initramfs, plus the init-bottom hook that calls our initramfs.d scripts, done.
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| 10:22 | <gvy> hi folks
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| 10:23 | working on updating ALT patches for 5.2.x, there are NBD/NFS root questions -- anyone around? :)
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| 11:24 | <Yoe> gvy: can't say I can help, but you can ask :-)
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| 11:26 | <bakytn> gvy, just ask
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| 11:28 | <knipwim> cool, improved ALTLinux support
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| 11:52 | <bakytn> Hey guys! My goal is to have a single app launched in LTSP (firefox) so when people boots they would see the only Firefox application
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| 11:52 | So I have create my own screen.d script called "firefox" in (/opt/ltsp/i386/user/share/ltsp/screen.d)
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| 11:52 | it works however I am having issues.
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| 11:53 | here is the contents
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| 11:54 | http://pastebin.com/RaaSCt3C
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| 11:55 | and firefox.sh (just a tweaked version of rdesktop.sh) http://pastebin.com/30k6zEHQ
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| 11:55 | I'm setting SCREEN_07=firefox and it works fine
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| 11:56 | the problem is when I mouse over on the main menu cursor becoming like "X" (you know X Window Systems cursor)
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| 11:57 | and when I am trying to select any menu item - menu closes
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| 11:57 | can you look at my short scripts and tell, what's the problem?
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| 11:57 | the Firefox is the latest one version 8.0
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| 12:00 | :)
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| 12:00 | <ogra_> you need a window manager ... why dont you just use the kiosk mode, it does exactly what you want
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| 12:01 | <bakytn> ogra_, how to use it?
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| 12:01 | ogra_, I saw the script...called kiosk but didn't get it
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| 12:01 | <ogra_> ltsp-build-client should have a mode for this, there should also be documentation on the ubuntu wiki
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| 12:02 | <bakytn> I have "kiosk" script in screen.d
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| 12:30 | yeah, using kiosk and getting the same issue
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| 12:40 | <ogra_> with ltsp-build-client ?
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| 12:41 | <ogra_> iirc it actually installs a wm and sets it up properly
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| 12:43 | <bakytn> ogra_, I don't remember did I use ltsp-build-client with kiosk option but I had "kiosk" script and after adding of ltspkiosk user I was able to launch firefox
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| 12:43 | with the same issue :D (it's okay, not a big problem though..)
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| 14:17 | <mgariepy> good morning everyone
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| 15:54 | <dobber> i just broke my production ltsp installation :(
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| 15:54 | after booting i get to busybox ;(
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| 15:56 | <chrisjrob> done anything in /etc/fstab or grub?
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| 15:56 | since the last boot
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| 15:56 | ?
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| 15:56 | <dobber> i copied my client image to a new directory
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| 15:57 | set LTSP_HANDLE_DAEMONS=false
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| 15:57 | chrooted to the new directory
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| 15:57 | and updated the system to new ubuntu
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| 15:57 | <chrisjrob> ah, it's the clients that are getting busybox
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| 15:57 | <dobber> during the upgrade procedure, clients stopped responding
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| 15:57 | i don't know why
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| 15:58 | <chrisjrob> is /etc/exports showing he right location?
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| 15:58 | <dobber> yes
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| 15:58 | but nbd server did not have a config file
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| 15:58 | instead inetd was configured
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| 15:58 | and i don't remember useing inetd
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| 15:59 | i reconfigured nbd-server, stoped inetd
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| 15:59 | update image, update kernels
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| 15:59 | reboot the client
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| 16:00 | <alkisg> How did you copy the image? With what command?
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| 16:00 | <dobber> and i get No init found, try passing init=
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| 16:00 | and busybox
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| 16:00 | alkisg: cp -a /opt/ltsp/i386 /opt/ltsp/11.10
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| 16:00 | chrooted to 11.10
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| 16:00 | mount -t proc
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| 16:00 | <alkisg> I don't think that copies devices nodes, does it?
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| 16:00 | <dobber> and dist-upgrade
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| 16:00 | it does
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| 16:01 | <alkisg> And now you have 2 chroots, one working ok, and another one not?
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| 16:01 | <dobber> no
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| 16:01 | i did not touch the original
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| 16:01 | it "should" work
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| 16:01 | but it does not
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| 16:02 | pls, give me ideas, because 8 ppl are not working atm :(
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| 16:02 | <alkisg> Erm I'm not sure I get it, let's speak about your end goal instead
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| 16:02 | Why do you want 2 chroots?
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| 16:02 | <dobber> i wanted to make a new client image with new ubuntu
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| 16:02 | without touching the server at all
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| 16:02 | <alkisg> Ah, you thought that dist-upgrade would get you a newer ubuntu version?
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| 16:03 | <dobber> yeah
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| 16:03 | <alkisg> Well, it doesn't :)
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| 16:03 | You should be running dist-upgrade on normal upgrades
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| 16:03 | apt-get update; apt-get dist-upgrade ==> that's normal maintainance
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| 16:03 | <dobber> yes
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| 16:03 | <alkisg> It doesn't give you a newer distro version, it just installs the updates
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| 16:04 | <dobber> i changed apt.sources to a newer version
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| 16:04 | <alkisg> To get a newer distro version, you'd need do-release-upgrade or something
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| 16:04 | But
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| 16:04 | <dobber> anyway
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| 16:04 | <alkisg> You can't do that on ltsp chroots :)
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| 16:04 | <dobber> why does my old installation does not work ?
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| 16:04 | that's more important nwo
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| 16:04 | now
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| 16:04 | <alkisg> Because ltsp-build-client modifies your chroot, and if you upgraded it, it would stop working
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| 16:04 | <dobber> i did not upgrade the original chroot
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| 16:05 | only the copy
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| 16:05 | <alkisg> So. Are we at a point where you only have 1 chroot, the original one, and you want to get it working?
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| 16:05 | <dobber> yes
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| 16:05 | <alkisg> Which version are you using? 11.04? 10.04?
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| 16:05 | <dobber> i removed the new version now
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| 16:05 | 10.04
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| 16:05 | <alkisg> OK, please revert your changes to nbd-server
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| 16:05 | I.e. delete the config file, and put back the inetd entry
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| 16:05 | <dobber> ok
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| 16:06 | <alkisg> Stop nbd-server, and restart openbsd-inet, or, to be sure you have a correct setup, reboot your server and check what's running
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| 16:07 | <dobber> 9571 stream tcp nowait nobody /usr/sbin/tcpd /usr/sbin/ldminfod
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| 16:07 | 9572 stream tcp nowait nobody /usr/sbin/tcpd /usr/sbin/nbdswapd
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| 16:07 | 2000 stream tcp nowait nobody /usr/sbin/tcpd /usr/sbin/nbdrootd /opt/ltsp/images/i386.img
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| 16:07 | ok client booting
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| 16:08 | i mean , downloading image now
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| 16:09 | ok booted up
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| 16:09 | tryed to login
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| 16:09 | no respons from server
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| 16:09 | <alkisg> !ltsp-update-sshkeys
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| 16:09 | <ltsp> alkisg: ltsp-update-sshkeys: If you changed your server IP, you need to run ltsp-update-sshkeys, and if you're using NBD (Ubuntu) you also need ltsp-update-image afterwards
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| 16:09 | <dobber> ltsp-update-sshkeys ?
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| 16:10 | up and running
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| 16:10 | i guess i blamed the LTSP_HANDLE_DAEMONS not working...
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| 16:10 | <alkisg> Wow, you must have a fast server :)
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| 16:10 | <dobber> because the upgrade procedure wanted me to restart openbsd-inetd
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| 16:10 | and i tought that somehow it got out of chroot
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| 16:10 | in panic mode
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| 16:11 | <alkisg> It's somewhere in the docs, that ltsp doesn't support chroots distro upgrades
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| 16:11 | We hope it will in ltsp 6
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| 16:13 | <dobber> what do you mean does not support ?
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| 16:14 | oh, the ltsp server a different version that the ltsp client
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| 16:14 | ?
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| 16:14 | <alkisg> I mean that if you try to upgrade your chroot from 10.04 to 10.10, it will break
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| 16:14 | No, different versions are supported. Just not chroot upgrades
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| 16:15 | If you want to build a 11.10 chroot from the start, and continue to have 10.04 on your server, you can.
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| 16:15 | <dobber> well, if i create a chroot from scratch ?
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| 16:15 | aha
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| 16:15 | well, that's my goal then
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| 16:15 | <alkisg> Just remember that if you're not using fat clients, you'll still have a 10.04 desktop
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| 16:15 | <dobber> i don't want to upgrade the server
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| 16:16 | <alkisg> The chroot doesn't have gnome etc, those are on your server (if you're using thin clients), so your users won't get any newer programs
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| 16:16 | <dobber> ahm.. let me remind myself what was a fat client
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| 16:16 | <alkisg> !fatclients
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| 16:16 | <ltsp> alkisg: fatclients: You may find some info about the Ubuntu/LTSP implementation of fat clients at https://help.ubuntu.com/community/UbuntuLTSP/FatClients
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| 16:17 | <dobber> so i have to copy all gnome files to the chroot and run it from there ?
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| 16:18 | <alkisg> Ermmmm not exactly
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| 16:18 | Thin clients is LTSP as you know it
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| 16:18 | Fat clients is another possible setup that LTSP offers
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| 16:18 | If you switch to using fat clients, then you don't even need X on your server
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| 16:18 | But that's a different setup from what you have now
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| 16:19 | (and you don't even need a multicore server, any cpu at 1ghz will do)
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| 16:19 | Are your clients good enough to work as fat clients?
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| 16:19 | <dobber> yes
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| 16:19 | <alkisg> Then yes, you could try building a fat chroot
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| 16:20 | <dobber> they are old desktop systems that ran windows xp, then domain controler, then ltsp
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| 16:20 | good cpu, ram and video
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| 16:20 | <alkisg> old desktops? How much ram?
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| 16:20 | <dobber> i don't think there is lower than 2gb ram
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| 16:20 | <ogra_> Gadi, poke
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| 16:20 | <alkisg> Ah ok then, not so old. When I hear "old" here I'm thinking 256 MB RAM :)
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| 16:22 | <ogra_> hey bfiller !
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| 16:22 | Gadi, meet bfiller :)
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| 16:22 | <bfiller> hey guys
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| 16:22 | <Gadi> bfiller: hi
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| 16:22 | <alkisg> dobber: I think that fat clients have a problem in 11.10, a package needs to be un-blacklisted for the installation to work ok. It's been solved in the meantime, but not backported.
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| 16:22 | <dobber> alkisg: after i build my fat client, i setup it the same way with tftpd ?
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| 16:22 | <alkisg> Yes
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| 16:22 | <dobber> how big does it get ?
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| 16:23 | <alkisg> You mean the NBD image? 1-2 Gb, depending on if you enable compression
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| 16:23 | It's not loaded in the client RAM, don't worry about its size
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| 16:23 | <dobber> so in every reboot, they should download 1-2gb ?
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| 16:24 | <alkisg> No. Imagine booting from a 500Gb live usb disk. Does it need to be downloaded?
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| 16:24 | <dobber> no
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| 16:24 | <alkisg> The clients only read the sectors they need each time
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| 16:24 | <dobber> ok, i'm talking blindly right now
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| 16:24 | let me read the docs
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| 16:24 | <alkisg> So you can boot a 64MB RAM client from a 2 Gb NBD image
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| 16:24 | Yup
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| 16:26 | <dobber> i can craft a pxe config to dual boot thin and fat client, right ?
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| 16:26 | <alkisg> You don't need to, the same fat image can boot both thin and fat
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| 16:27 | * alkisg goes back to studying, bbl... | |
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| 16:44 | <gvy> Yoe, thx :)
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| 16:45 | ogra_, maybe you could actually help -- the question is regarding stuffing nfsroot into pxelinux.cfg/default (or whatever that way) in {server/ltsp-,client/}update-kernels
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| 16:46 | <gvy> from my reading of these scripts after they've been split there's no place where BASE is there and that config gets populated
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| 16:47 | * gvy stares at "256M" numbers and sighs | |
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| 16:48 | <gvy> the quick-and-dirty updated mockup didn't actually finish booting on 16M client -- udev rules got too beefy, need to look there and prune 'em a bit to avoid OOM
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| 16:48 | something like 18M VM was fine though :)
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| 16:52 | <matrix3000> 18M VM?
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| 17:05 | <gvy> yup
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| 17:05 | 18 megabyte RAM virtual machine
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| 17:11 | <Gadi> gvy: the client's /usr/share/ltsp/update-kernels writes the pxelinux.cfg/default file on the client. the server's ltsp-update-kernels will copy that over to the tftproot on the server
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| 17:12 | s/client/chroot/
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| 17:13 | <gvy> Gadi, erm, then I'd amend the update-kernels generated config with ltsp-update-kernels, right?
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| 17:13 | (didn't get or find so far what was the need to split the script except that it was pretty hefty already :)
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| 17:14 | <Gadi> if you want to add different boot options to be auto-populated, you can add them to the chroot's /etc/lts/update-kernels.conf
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| 17:14 | sorry, /etc/ltsp/update-kernels.conf
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| 17:14 | brb
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| 17:25 | <gvy> Gadi, ah, thx
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| 18:43 | <dobber> alkisg btw, thank you very much for the help
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| 18:43 | (again)
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| 18:47 | <alkisg> dobber: you're welcome
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| 18:48 | <dobber> how is the financial crisys in greece treating you ?
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| 18:49 | <alkisg> Well, the teacher salaries dropped by about 300€, but luckily my wife's a teacher too, so we don't have a problem yet
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| 18:49 | Other families where only one parent works do have problems though
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| 18:50 | <dobber> i hope it gets better soon
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| 18:51 | not that we are ok, our governmnet is run by ex mafia :)
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| 18:52 | <alkisg> Haha
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| 19:01 | <andygraybeals> alkisg, my girl was wondering about you and the finances over there the other day.
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| 19:01 | i will tell her.
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| 19:14 | <BonaC> ...
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| 19:15 | Does LTSP download a specific kernel to the server computer?
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| 19:15 | I mean after I installed LTSP, my security camera went haywire.
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| 19:15 | ?
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| 19:16 | <andygraybeals> impatence
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| 19:19 | <BonaC> Hi!
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| 19:20 | Does LTSP download a specific kernel and/or software to the server computer and replaces the original kernel/software?
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| 19:20 | <BonaC> I mean my security camera went haywire about an hour ago - right after I tried the LTSP again
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| 19:21 | <BonaC> Now V4L2 throws EIO-errors and stuff
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| 19:22 | "libv4l2: error dequeuing buf: Input/output error
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| 19:22 | "
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| 19:27 | <dobber> BonaC it will not vhange the server kernel
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| 19:27 | where is your kamera
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| 19:28 | <BonaC> My camera is on top of the server, plugged to the rear USB ports
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| 19:28 | If you want it precise. :)
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| 19:29 | It seems it started working again after I replugged the cam
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| 19:29 | Derp
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| 19:30 | How I should have known
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| 19:30 | But still
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| 19:30 | So
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| 19:31 | The Thin Client will actually have it's own kernels or does it use the ones on the server?
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| 19:31 | Or is it just "kernel"?
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| 19:35 | <markit> BonaC: the ltsp creates a chroot and if you use ubuntu a nbd image, nothing on the "host" server is touched
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| 19:36 | the client uses the one tfpt provides it, that is separated from the host kernel
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| 19:36 | or something like that
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| 19:40 | <dobber> right
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| 20:07 | <vagrantc> Yoe: oh, yeah.
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| 20:07 | Yoe: it looks more feasible to make it easier to use nbd or nfs without much difference now
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| 20:08 | <alkisg> Next step is to also use the same syntax for nbd, as defined in rfc2224 for nfs, and to also use root-path from dhcp :D
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| 20:08 | <host>:<port>/<url-path>
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| 20:09 | With square brackets for ipv6
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| 20:12 | <vagrantc> alkisg: i already convinced Yoe to add an nbd*=dhcp option that uses rootpath
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| 20:14 | <dobber> you want to add options to dhcp server?
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| 20:14 | instead of tftp/initrd ?
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| 20:19 | <dobber> ltp-update-image would require to change dhcp config?
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| 21:15 | <Gadi> Yoe: what do you think of this patch to your nbd script? http://pastebin.com/7zWaReXe
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| 21:16 | it would enable it to support the colon-delimited syntax in addition to commas and allow for a different NBDCLIENT script (also, it should enable setting an nbdname from option root-path)
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