IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 16 March 2017 (all times are UTC)
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| 01:43 | <Guest83458> if already in use ubuntu ltsp 16:04 LTS version? ..
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| 01:44 | The client running extremely slow
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| 01:46 | processor hardware as Intel (R) Core (TM) i5-4460,, 16gb ram
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| 08:38 | <raphr> Hello ! Working on ltsp fat client on xenial. I have mounted /usr on another partition but ltsp-build-image --cleaup / keeps it in squashfs image. Then client don't boot anymore as it seems to keep this settings.
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| 08:43 | <alkisg> raphr: what do you mean "keeps it in squashfs image"?
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| 08:44 | Of course /usr should be in the image, shouldn't it?
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| 08:44 | How would the clients boot without /usr?
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| 09:03 | <raphr> it tries to mount /usr then go to initramfs
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| 09:04 | <alkisg> raphr: can I see with vnc?
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| 09:04 | !vnc-edide
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| 09:04 | <ltsp> vnc-edide: To share your screen with me, open Epoptes → Help menu → Remote support → Host: srv1-dide.ioa.sch.gr, and click the Connect button
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| 09:04 | <alkisg> Or this one:
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| 09:04 | !vnc-dide
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| 09:04 | <ltsp> vnc-dide: To share your screen with me, run this: sudo apt-get --yes install x11vnc; x11vnc -connect srv1-dide.ioa.sch.gr - this is a reverse connection, it doesn't need port forwarding etc.
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| 09:04 | <raphr> it is on pxe client boot
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| 09:04 | <alkisg> I want to see the server
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| 09:04 | <raphr> only console
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| 09:05 | <alkisg> To see what you did
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| 09:05 | E.g. what the i386.img contains and what not
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| 09:09 | The image is supposed to have /usr inside it. The client isn't supposed to try to mount /usr from elsewhere.
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| 09:10 | <raphr> I have mounted i386.img. It containes same fstab as server
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| 09:10 | contains
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| 09:11 | /usr entry should be removed if I understand
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| 09:11 | <alkisg> No
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| 09:11 | Does the image contain the whole /usr?
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| 09:11 | <raphr> yes
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| 09:12 | <alkisg> The initramfs doesn't have any logic to mount /usr
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| 09:12 | What is the exact error message that you see when the client boots?
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| 09:12 | Can you take a photo with a mobile phone?
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| 09:13 | <raphr> yes I can fo this
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| 09:13 | do
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| 09:15 | <alkisg> Ah ok nevermind I saw it
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| 09:15 | It's in initramfs "init", it special-cases /usr
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| 09:18 | In the initramfs, do you see the same /etc/fstab that you have on your server?
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| 09:18 | I.e. from the initramfs> prompt, try cat /etc/fstab
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| 09:21 | <raphr> fstab seems empty
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| 09:21 | in initramfs
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| 09:21 | <alkisg> OK it gets it from ${rootmnt}
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| 09:21 | raphr: file a bug report in ltsp about it:
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| 09:21 | !ltsp-bug
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| 09:21 | <ltsp> ltsp-bug: To file a bug report for upstream LTSP, go to https://bugs.launchpad.net/ltsp
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| 09:22 | <alkisg> ltsp-cleanup.d should make a default fstab, before the ltsp init scripts override it
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| 09:22 | We didn't know that initramfs was reading fstab from inside rootmnt/etc/fstab
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| 09:26 | <raphr> here is the screen shot http://pasteboard.co/K3ks97pv4.jpg sorry for quality
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| 09:27 | I needed disk place on my ltsp vm. Move /usr was not a so good idea ^^
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| 09:28 | <alkisg> Nah it's just a rare bug, we can easily fix it
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| 09:28 | (if you report it :))
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| 09:29 | <raphr> OK, i'll do this :)
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| 09:44 | <alkisg> Anyone using ubuntu-mate 16.04 with fat clients? Do you have a shutdown option in mate menu?
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| 09:48 | <raphr> where's the mksquasshfs cmd args used by mksquashfs ?
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| 09:48 | ltsp-build-client I meant
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| 09:49 | <alkisg> Inside /usr/sbin/ltsp-update-image
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| 10:01 | <raphr> OK, thank you. easier way was to temporary comment /usr entry in fstab before ltsp-update-uimage
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| 10:02 | <alkisg> OK, but if you don't report the bug, then you'll see it again in all the future ltsp versions as well
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| 10:02 | It's one of the ways to contribute back to projects, that also helps you as the user
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| 10:04 | <raphr> bug reported
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| 10:04 | <alkisg> Nice :)
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| 10:04 | <raphr> I've put workaround to be more complete
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| 10:05 | <alkisg> Put /etc/fstab in /etc/ltsp/ltsp-update-image.excludes
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| 10:05 | It's a better workaround until the bug is fixed
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| 10:05 | <raphr> thank you
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| 10:05 | <alkisg> You're welcome
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| 10:06 | <raphr> alkisg: Now my pxe client is back I can now answer your question as I have mate as default destop. I have only close session in options
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| 10:07 | <alkisg> raphr: close session? is that the disconnect dialog?
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| 10:08 | I have "Lock screen" and "Log out user"
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| 10:08 | I don't see a "close session" dialog...
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| 10:08 | <raphr> yes in system menu : logout only
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| 10:08 | <alkisg> OK
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| 10:08 | Thanks, I'll need to fix that
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| 10:09 | <raphr> home users are mounted from an nfs server
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| 10:56 | alkisg: In fact in MATE, reboot/shutown is accessible via power icon top right panel
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| 10:56 | <alkisg> raphr: yes but I've switched to the redmond layout and I don't have that
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| 11:34 | The weird thing is that running `xinit` as root, then doing `su - user`, and finally running mate-session from there, results in the shutdown option appearing normally... so it's like it's related to logind/polkit somehow
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| 11:38 | <raphr> does ldm can choose per user session. I need a local user launche specific desktop but it launches default mate instead
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| 11:44 | alkisg: try with empty user profile.
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| 13:09 | <sbalneav> Morning all
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| 13:36 | <alkisg> Hi Scotty
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| 13:37 | raphr: could you please open mate-tweak and select the redmond panel theme, and see if you get the logout menu item there? Then just select ubuntu-mate theme again to go back to your defaults...
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| 13:50 | <ZAJDAN> hi...alkisg, may I ask something about epoptes?
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| 13:50 | <alkisg> ZAJDAN: sure
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| 13:50 | <ZAJDAN> I am trying wake on LAN
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| 13:51 | seems, that the client machine is able wake from LAN
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| 13:51 | but nothing going on when I send from epoptes such signal to the machine
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| 13:52 | <alkisg> When you say "seems it's able", did you manage to do it with some other software?
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| 13:52 | Or are you just referring to some docs you've seen?
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| 13:53 | <ZAJDAN> in BIOS is enabled: Power On by PCI PME/LAN
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| 13:53 | <alkisg> OK, please answer my question, did you manage to do it with any software?
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| 13:54 | <ZAJDAN> not
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| 13:54 | <alkisg> Then it's probably a misconfiguration, either in BIOS or in the cable that connects the NIC to the motherboard etc etc, not an epoptes issue
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| 13:54 | If you manage to do it with some software but not with epoptes, then it's an epoptes issue :)
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| 13:56 | <ZAJDAN> or maybe I have not installed etherwake....epoptes doesn't install this package?
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| 13:56 | <alkisg> No
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| 13:57 | <ZAJDAN> and is this package needed?
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| 13:57 | <alkisg> No
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| 13:57 | But you can install it to test other software
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| 13:57 | There are many packages that can send wake on lan
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| 13:58 | The usual problem of them not working is that the sysadmin didn't configure the clients properly
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| 13:58 | Or that the clients don't support wol
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| 13:59 | <ZAJDAN> clients need just BIOS what allow wol...yes?
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| 14:00 | <alkisg> No
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| 14:00 | <ZAJDAN> also some applications?
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| 14:00 | <alkisg> But that's what I'm trying to avoid, to write in IRC a "how to enable client wol"
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| 14:00 | You can google for what wol needs, lots of wikis and how-to's there
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| 14:00 | When you do have an epoptes issue, I'm here to help you
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| 14:00 | <ZAJDAN> because I want to awake thin client
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| 14:00 | <alkisg> But I'm not a wiki.
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| 14:02 | <ZAJDAN> ok ok..I am asking you here because the station is Thin client
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| 14:02 | <alkisg> So?
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| 14:02 | Do you also use rdp?
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| 14:02 | Then you can ask in #rdp
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| 14:02 | Do you also have a keyboard?
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| 14:02 | Then you can ask in #keyboard
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| 14:02 | Configuring Wol on the clients has nothing to do with ltsp or epoptes or thin or fat clients
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| 14:03 | Just google "configure wol"
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| 14:03 | If you do configure wol and epoptes is not working, THEN it's an epoptes issue
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| 14:03 | It's not an epoptes issue to teach you how to configure the clients for wol...
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| 14:03 | That's your issue. Learn to google. :)
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| 14:04 | <ZAJDAN> my client is Thin (diskless)...fully starts from LTSP
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| 14:04 | <alkisg> And?
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| 14:04 | It's a bios setting
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| 14:04 | It has nothing to do with any operating system
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| 14:04 | The fact that you're using ltsp is completely unrelated
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| 14:05 | <ZAJDAN> clients need just BIOS what allow wol...yes? and you answered 'No'
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| 14:05 | <alkisg> No
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| 14:05 | It might need a cable too
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| 14:05 | <ZAJDAN> now you say that it is only about bios
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| 14:05 | <alkisg> Google about it
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| 14:05 | <ZAJDAN> ok ok..I will not disturb you
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| 14:05 | <alkisg> Yes, when you want me to teach you things that are not related at all to ltsp and epoptes, please don't :)
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| 14:06 | "give a man a fish, you feed him once; teach him to fish, you feed him for life"
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| 14:06 | I.e. now it's time to learn to google
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| 14:40 | <alkisg> omg someone has code inside mate to check for $LTSP_CLIENT... :(
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| 14:40 | ./mate-panel/panel-menu-items.c: if (item != NULL && !g_getenv("LTSP_CLIENT")) {
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| 14:43 | <sbalneav> Really?!
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| 14:43 | lol
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| 14:50 | <alkisg> ogra_ ....... :D
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| 14:50 | https://github.com/mate-desktop/mate-panel/commit/8c25e1bdd328a8712735c0b00cf4aede7993da1d
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| 14:50 | You prevent our fat clients from shutting down!!!! 9 years later, lol! :D
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| 15:06 | <alkisg> https://github.com/mate-desktop/mate-panel/issues/535
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| 15:13 | <sbalneav> lol
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| 15:13 | ok, I'll look into it.
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| 15:15 | <alkisg> Aaah yes I forgot we have an inside person at mate :D
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| 15:15 | Go go Scotty!
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| 15:15 | <sbalneav> tee hee
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| 15:16 | <alkisg> I also filed an SRU, sort of: https://bugs.launchpad.net/ubuntu/+source/mate-panel/+bug/1673486
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| 15:16 | To eventually backport it to ubuntu 16.04
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| 15:16 | * alkisg waves, later... | |
| 15:34 | <raphr> Hello I'm back. Missed things
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| 15:35 | <sbalneav> You missed several supermodels signing on to be LTSP developers.
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| 15:36 | vagrantc, alkisg and I have all offered to tutor them.
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| 15:36 | Sorry, you missed your chance.
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| 15:36 | <raphr> :D
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| 15:47 | <raphr> alkisg : you're right REdmon theme doesn't have power icon
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| 15:49 | alkisg: other intersting behaviour. On test user doesn't have power features but if I clen his porfile, it is back.
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| 15:50 | clean
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| 15:50 | maybe upgrade related
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| 15:55 | can ldm use $HOME/.xession to launch desktop ?
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| 15:59 | ZAJDAN: WOL works only if server and client in same subnet. I use wakeonlan package for this purpose.
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| 16:03 | <alkisg> raphr: there's a "preferences > select session" menu in ldm
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| 16:03 | When a user selects something, it's saved in his .dmrc
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| 16:03 | So it remembers his selection for the next login
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| 16:10 | <raphr> alkisg: thank you. With tests, make this file read only prevent to change the default. Exactly what I need
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| 16:11 | <alkisg> raphr: you need to force a setting per user? strange :D
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| 16:11 | There's LDM_FORCE_SESSION, per client
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| 16:11 | Not per user
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| 16:12 | <raphr> This user is a generic one.
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| 16:12 | <alkisg> You login with the same user account from many clients?
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| 16:13 | <raphr> Yes, but it is a very specific desktop
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| 16:13 | <alkisg> In general, desktops can't be used from many places because they don't have support for that
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| 16:14 | They don't use locks to access /home/username/*
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| 16:14 | So settings can be broken, files overwritten etc
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| 16:14 | You can't launch firefox many times, you can't launch libreoffice etc etc
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| 16:14 | It's usually best to have at least one user per client
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| 16:15 | <raphr> In my case this is an openbox window manager wich launches vmware view client for windows users.
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| 16:15 | <alkisg> Still, you would have to check if all the involved software behaves properly
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| 16:16 | If you don't need to save things to /home/username, then it's best to use nbd to serve it on a per client basis
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| 16:16 | Not sshfs
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| 16:18 | <raphr> Althought this seems working with my previous ltsp install, this make me doubt . ^^
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| 16:20 | Any way to have no sshfs with soe user ?
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| 16:21 | some
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| 16:23 | just use overlay fs instead ?
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| 16:30 | <alkisg> You want to have sshfs for some users, and nbd for other users?
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| 16:32 | <raphr> alkisg: yes, ideally. Inj fact only local user is enough. normal users are NFS home share
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| 16:33 | <alkisg> Then yes it should be local (or in a temp nbd mount), not sshfs
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| 16:33 | It's easy to do that, I have that for a generic "ltsp" user here at the office, which we use to login to workstations in need of service
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| 16:34 | <raphr> great
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| 16:35 | where to configure that then ?
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| 16:37 | <alkisg> raphr: please try to ping me again when I have less to do! Multitasking too much currently...
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| 16:38 | <raphr> alkisg: OK, I have to go anyawy
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| 16:39 | see ya.
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| 16:39 | <alkisg> bb
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| 19:16 | <alkisg> raphr: one quick way is to increase NBD_SWAP to a value big enough to fit your expected /home/ltsp user folder, and put this in lts.conf: INIT_COMMAND_LOCAL_USER="mkdir -p /home/ltsp && mount -t tmpfs -o mode=0755,uid=1001,gid=1001 tmpfs /home/ltsp"
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| 19:16 | ...then if you have an ltsp user on the server with uid=gid=1001, the users will authenticate against the server, but use the local /home/ltsp folder
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| 19:20 | <ntanchel> Let's try
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