IRC chat logs for #ltsp on irc.freenode.net (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? ..
01:44
The client running extremely slow
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.
08:43
<alkisg>
raphr: what do you mean "keeps it in squashfs image"?
08:44
Of course /usr should be in the image, shouldn't it?
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
09:04
<alkisg>
raphr: can I see with vnc?
09:04
!vnc-edide
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
09:04
<alkisg>
Or this one:
09:04
!vnc-dide
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.
09:04
<raphr>
it is on pxe client boot
09:04
<alkisg>
I want to see the server
09:04
<raphr>
only console
09:05
<alkisg>
To see what you did
09:05
E.g. what the i386.img contains and what not
09:09
The image is supposed to have /usr inside it. The client isn't supposed to try to mount /usr from elsewhere.
09:10
<raphr>
I have mounted i386.img. It containes same fstab as server
09:10
contains
09:11
/usr entry should be removed if I understand
09:11
<alkisg>
No
09:11
Does the image contain the whole /usr?
09:11
<raphr>
yes
09:12
<alkisg>
The initramfs doesn't have any logic to mount /usr
09:12
What is the exact error message that you see when the client boots?
09:12
Can you take a photo with a mobile phone?
09:13
<raphr>
yes I can fo this
09:13
do
09:15
<alkisg>
Ah ok nevermind I saw it
09:15
It's in initramfs "init", it special-cases /usr
09:18
In the initramfs, do you see the same /etc/fstab that you have on your server?
09:18
I.e. from the initramfs> prompt, try cat /etc/fstab
09:21
<raphr>
fstab seems empty
09:21
in initramfs
09:21
<alkisg>
OK it gets it from ${rootmnt}
09:21
raphr: file a bug report in ltsp about it:
09:21
!ltsp-bug
09:21
<ltsp>
ltsp-bug: To file a bug report for upstream LTSP, go to https://bugs.launchpad.net/ltsp
09:22
<alkisg>
ltsp-cleanup.d should make a default fstab, before the ltsp init scripts override it
09:22
We didn't know that initramfs was reading fstab from inside rootmnt/etc/fstab
09:26
<raphr>
here is the screen shot http://pasteboard.co/K3ks97pv4.jpg sorry for quality
09:27
I needed disk place on my ltsp vm. Move /usr was not a so good idea ^^
09:28
<alkisg>
Nah it's just a rare bug, we can easily fix it
09:28
(if you report it :))
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?
09:48
<raphr>
where's the mksquasshfs cmd args used by mksquashfs ?
09:48
ltsp-build-client I meant
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
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
10:02
It's one of the ways to contribute back to projects, that also helps you as the user
10:04
<raphr>
bug reported
10:04
<alkisg>
Nice :)
10:04
<raphr>
I've put workaround to be more complete
10:05
<alkisg>
Put /etc/fstab in /etc/ltsp/ltsp-update-image.excludes
10:05
It's a better workaround until the bug is fixed
10:05
<raphr>
thank you
10:05
<alkisg>
You're welcome
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
10:07
<alkisg>
raphr: close session? is that the disconnect dialog?
10:08
I have "Lock screen" and "Log out user"
10:08
I don't see a "close session" dialog...
10:08
<raphr>
yes in system menu : logout only
10:08
<alkisg>
OK
10:08
Thanks, I'll need to fix that
10:09
<raphr>
home users are mounted from an nfs server
10:56
alkisg: In fact in MATE, reboot/shutown is accessible via power icon top right panel
10:56
<alkisg>
raphr: yes but I've switched to the redmond layout and I don't have that
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
11:38
<raphr>
does ldm can choose per user session. I need a local user launche specific desktop but it launches default mate instead
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
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?
13:50
<alkisg>
ZAJDAN: sure
13:50
<ZAJDAN>
I am trying wake on LAN
13:51
seems, that the client machine is able wake from LAN
13:51
but nothing going on when I send from epoptes such signal to the machine
13:52
<alkisg>
When you say "seems it's able", did you manage to do it with some other software?
13:52
Or are you just referring to some docs you've seen?
13:53
<ZAJDAN>
in BIOS is enabled: Power On by PCI PME/LAN
13:53
<alkisg>
OK, please answer my question, did you manage to do it with any software?
13:54
<ZAJDAN>
not
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
13:54
If you manage to do it with some software but not with epoptes, then it's an epoptes issue :)
13:56
<ZAJDAN>
or maybe I have not installed etherwake....epoptes doesn't install this package?
13:56
<alkisg>
No
13:57
<ZAJDAN>
and is this package needed?
13:57
<alkisg>
No
13:57
But you can install it to test other software
13:57
There are many packages that can send wake on lan
13:58
The usual problem of them not working is that the sysadmin didn't configure the clients properly
13:58
Or that the clients don't support wol
13:59
<ZAJDAN>
clients need just BIOS what allow wol...yes?
14:00
<alkisg>
No
14:00
<ZAJDAN>
also some applications?
14:00
<alkisg>
But that's what I'm trying to avoid, to write in IRC a "how to enable client wol"
14:00
You can google for what wol needs, lots of wikis and how-to's there
14:00
When you do have an epoptes issue, I'm here to help you
14:00
<ZAJDAN>
because I want to awake thin client
14:00
<alkisg>
But I'm not a wiki.
14:02
<ZAJDAN>
ok ok..I am asking you here because the station is Thin client
14:02
<alkisg>
So?
14:02
Do you also use rdp?
14:02
Then you can ask in #rdp
14:02
Do you also have a keyboard?
14:02
Then you can ask in #keyboard
14:02
Configuring Wol on the clients has nothing to do with ltsp or epoptes or thin or fat clients
14:03
Just google "configure wol"
14:03
If you do configure wol and epoptes is not working, THEN it's an epoptes issue
14:03
It's not an epoptes issue to teach you how to configure the clients for wol...
14:03
That's your issue. Learn to google. :)
14:04
<ZAJDAN>
my client is Thin (diskless)...fully starts from LTSP
14:04
<alkisg>
And?
14:04
It's a bios setting
14:04
It has nothing to do with any operating system
14:04
The fact that you're using ltsp is completely unrelated
14:05
<ZAJDAN>
clients need just BIOS what allow wol...yes? and you answered 'No'
14:05
<alkisg>
No
14:05
It might need a cable too
14:05
<ZAJDAN>
now you say that it is only about bios
14:05
<alkisg>
Google about it
14:05
<ZAJDAN>
ok ok..I will not disturb you
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 :)
14:06
"give a man a fish, you feed him once; teach him to fish, you feed him for life"
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... :(
14:40
./mate-panel/panel-menu-items.c: if (item != NULL && !g_getenv("LTSP_CLIENT")) {
14:43
<sbalneav>
Really?!
14:43
lol
14:50
<alkisg>
ogra_ ....... :D
14:50
https://github.com/mate-desktop/mate-panel/commit/8c25e1bdd328a8712735c0b00cf4aede7993da1d
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
15:13
<sbalneav>
lol
15:13
ok, I'll look into it.
15:15
<alkisg>
Aaah yes I forgot we have an inside person at mate :D
15:15
Go go Scotty!
15:15
<sbalneav>
tee hee
15:16
<alkisg>
I also filed an SRU, sort of: https://bugs.launchpad.net/ubuntu/+source/mate-panel/+bug/1673486
15:16
To eventually backport it to ubuntu 16.04
15:16* alkisg waves, later...
15:34
<raphr>
Hello I'm back. Missed things
15:35
<sbalneav>
You missed several supermodels signing on to be LTSP developers.
15:36
vagrantc, alkisg and I have all offered to tutor them.
15:36
Sorry, you missed your chance.
15:36
<raphr>
:D
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15:47
<raphr>
alkisg : you're right REdmon theme doesn't have power icon
15:49
alkisg: other intersting behaviour. On test user doesn't have power features but if I clen his porfile, it is back.
15:50
clean
15:50
maybe upgrade related
15:55
can ldm use $HOME/.xession to launch desktop ?
15:59
ZAJDAN: WOL works only if server and client in same subnet. I use wakeonlan package for this purpose.
16:03
<alkisg>
raphr: there's a "preferences > select session" menu in ldm
16:03
When a user selects something, it's saved in his .dmrc
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
16:11
<alkisg>
raphr: you need to force a setting per user? strange :D
16:11
There's LDM_FORCE_SESSION, per client
16:11
Not per user
16:12
<raphr>
This user is a generic one.
16:12
<alkisg>
You login with the same user account from many clients?
16:13
<raphr>
Yes, but it is a very specific desktop
16:13
<alkisg>
In general, desktops can't be used from many places because they don't have support for that
16:14
They don't use locks to access /home/username/*
16:14
So settings can be broken, files overwritten etc
16:14
You can't launch firefox many times, you can't launch libreoffice etc etc
16:14
It's usually best to have at least one user per client
16:15
<raphr>
In my case this is an openbox window manager wich launches vmware view client for windows users.
16:15
<alkisg>
Still, you would have to check if all the involved software behaves properly
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
16:16
Not sshfs
16:18
<raphr>
Althought this seems working with my previous ltsp install, this make me doubt . ^^
16:20
Any way to have no sshfs with soe user ?
16:21
some
16:23
just use overlay fs instead ?
16:30
<alkisg>
You want to have sshfs for some users, and nbd for other users?
16:32
<raphr>
alkisg: yes, ideally. Inj fact only local user is enough. normal users are NFS home share
16:33
<alkisg>
Then yes it should be local (or in a temp nbd mount), not sshfs
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
16:34
<raphr>
great
16:35
where to configure that then ?
16:37
<alkisg>
raphr: please try to ping me again when I have less to do! Multitasking too much currently...
16:38
<raphr>
alkisg: OK, I have to go anyawy
16:39
see ya.
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"
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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