IRC chat logs for #ltsp on irc.freenode.net (webchat)


Channel log from 29 April 2013   (all times are UTC)

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00:10
<epoptes_user7>
hello
00:10
i want to ask how to configure an epoptes server and client
00:14
<vagrantc>
!epoptes
00:14
<ltsp>
epoptes: Epoptes is a computer lab administration and monitoring tool. It works on Ubuntu and Debian based labs with LTSP or non-LTSP servers, thin and fat clients, standalone workstations, NX clients etc. More info: http://www.epoptes.org
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00:15
<vagrantc>
epoptes_user7: you've seen http://www.epoptes.org/installation ?
00:16
<epoptes_user7>
i have two edubuntu computers connected in lan, one of them installed as ltsp server and the other as ltsp client
00:18
i studied instalation page, i followed all the steps but i start epoptes in booth computers and computers dont recognize each other
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03:28
<gdi2k>
greetings! I'm successfully using LTSP for about 10 thin clients and things are good. But I'm getting a bit worried about the server failing and leaving all my clients dead. Is there a relatively simple way of adding a second server? I've looked at ltsp-cluster and it's complete overkill for me - looking for something for just a couple of servers, some way to share home directories, user accounts and installed packages
03:32
also not clear on how the clients would choose which server to log into - I thought I saw some info about LDM being able to load balance in some way but can't find it any more
03:36
<unkmar>
gdi2k: I saw that as well.
03:41
<gdi2k>
I've found a presentation that mentions it and there is a spec for it here: https://wiki.ubuntu.com/LDMLoadbalancingSupport but the link to the implementation is dead
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03:59
<alkisg>
gdi2k: the easiest way is to have a raid array in server1, so (1) if a disk fails, you can replace it without data loss, and (2) if the server1 hardware fails, you can move the disks to a server2 machine and have the thin clients up and running in a couple of minutes
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04:00
<alkisg>
server2 may even be a simple desktop machine, used as a thin client until it's needed as a server...
04:01
<gdi2k>
alkisg: thanks, that's a neat idea. I could even use an external SATA enclosure that would be easy to shift to a second machine...
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08:11
<Joanet>
hi all
08:11
I've installed Edubuntu 12.04 + LTSP and I'm trying to use webcams on thin clients
08:12
Edubuntu is x64 version
08:12
webcam on the server works fine using cheese (and using lsusb is shown)
08:12
but on the thin client it is not listed using lsusb
08:13
can someone help me giving me any doc about it?
08:15
<highvoltage>
Joanet: hey
08:16
Joanet: I'm about to head off into a meeting, but you might want to look into local apps and install cheese as a local app
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08:16
<highvoltage>
(might be able to give some more input there if you're still around in ~3 hours)
08:16
<Joanet>
thanks highvoltage! I'll give a try
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08:18
<elias_a>
Second that. You want to run Cheese or some other piece of sw as local app.
08:19
How would you list the webcams as devices locally otherwise? :D
08:20
<dimmah1>
Hi. I can't print on HP P1102 on LTSP (Ubuntu 12.04) connected to the client.
08:20
Printer is present in lsusb list, but nothing similar in /dev.
08:20
/dev/lp0 is present, but I don't it's my printer. Cause 1. on server printer is /dev/usb/lp0, 2. on client /dev/lp0 is present even when i booted without printer
08:21
* but I don't think it's my printer.
08:21
<alkisg>
dimmah1: do you have access to the local client console?
08:21
E.g. with localapps, or with local root login, or with SCREEN_02=shell?
08:22
<dimmah1>
yes, with localapps
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08:23
<alkisg>
And you say that lsusb there doesn't list the printer?
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08:23
<alkisg>
Ah sorry you said it's there in lsusb
08:23
<dimmah1>
yes
08:24
<alkisg>
Try this: udevadm monitor
08:24
Then remove the printer, then plug it again
08:24
and check to see if the device nodes are created
08:25
<dimmah1>
on client or on server?
08:26
<alkisg>
Locally on the client
08:26
It's best if you have root on the client, using for example:
08:26
!screen_02
08:26
<ltsp>
screen_02: To get a root shell on an Ubuntu thin client: https://help.ubuntu.com/community/UbuntuLTSP/ClientTroubleshooting#Using_a_shell_SCREEN
08:26
<alkisg>
But localxterm should be ok too, for udevadm monitor...
08:26
<dimmah1>
command not found
08:26
<alkisg>
!localxterm
08:26
<ltsp>
localxterm: Any applications that you launch on a thin client actually runs on the server, not on the client itself. If you want to open a program on the client locally, you can type 'ltsp-localapps <program>' in a run dialog or in a terminal. For example, 'ltsp-localapps xterm' to open a terminal running on the client.
08:26
<alkisg>
Try /sbin/udevadm monitor
08:26
Maybe sbin isn't in your path
08:28
<Hyperbyte>
I usually demolish everything in my path.
08:29
<dimmah1>
/sbin/udevadm monitor shows:
08:29
monitor will print the received events for:
08:29
UDEV - the event which udev sends out after rule processing
08:29
KERNEL - the kernel uevent
08:29
and looks like hung up
08:31
<elias_a>
Joanet: I do not speak spanish.
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08:34
<lifeboy>
I want to try ltsp-config to configure my dnsmasq, but can't find it? Any idea where to get it?
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08:54
<alkisg>
dimmah1: it didn't hang up, it's just waiting for udev events, now plug in your printer
08:55
and then paste the udevadm monitor output
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08:56
<alkisg>
lifeboy: what's the version of your ltsp-server? dpkg -l ltsp-server
08:56
<lifeboy>
alkisg: 5.3.7-0ubuntu2.5
08:57
<dimmah1>
oh, thanks, It gave me a lot of info
08:58
but what does it means? :)
08:58
<lifeboy>
I followed the example at https://help.ubuntu.com/community/UbuntuLTSP/ProxyDHCP, except that I don't want to use dnsmasq as proxy, but authoritive
08:58
All seems well, but addresses are just not being served
08:59
<alkisg>
dimmah1: put the output to pastebin, pastebin.com
09:04
lifeboy: ltsp-config isn't available in ubuntu 12.04
09:04
(unless you're using the greek schools ppa)
09:04
Paste your config, and the output of `tail -F /var/log/syslog` when you're booting a client,
09:05
but, if you want an authoritative dhcp, I'd suggest you use isc-dhcp instead of dnsmasq
09:05
dnsmasq isn't very good as a dhcp server, it doesn't support parallel lease requests
09:06
<lifeboy>
alkisg: Hmm... :-( I just can't get dnsmasq configured to serve addresses. I can't use isc-dhcp since it refused to give my clients addresses since they don't seem to be having at least 1 char client id's
09:06
Alkisg: There is nothing in the log when I try to boot a client
09:07
<dimmah1>
here it is http://pastebin.com/fVS1S1ii
09:08
<alkisg>
lifeboy: pastebin the output of this: egrep -rv '^#|^$' /etc/dnsmasq*
09:08
<Joanet>
Hi again. I've installed cheese as local app but, after client restart, I do ltsp-localapps cheese and it do anything
09:09
<alkisg>
dimmah1: sr1 is a CDROM, did you plug the printer at that time, or inserted a CD?
09:09
Joanet: did you run ltsp-update-image?
09:09
<Joanet>
yes
09:09
<dimmah1>
HP 1102 is the printer with cd-rom emulator
09:10
<lifeboy>
alkisg: http://pastebin.com/YSgGUwJG
09:10
<Joanet>
alkisg : yes, i did including -a i386
09:10
<alkisg>
Joanet: run: ltsp-localapps xterm
09:10
And inside that, then run cheese
09:11
lifeboy: err would you care for a reverse vnc connection in order to troubleshoot that faster? I.e. screen sharing, we'll both be seeing your screen...
09:12
<lifeboy>
sure
09:12
<alkisg>
sudo apt-get install x11vnc; x11vnc -connect alkisg.dyndns.org
09:12
<lifeboy>
I connect to that server with nx-client... Do you know off-hand if I can share that too?
09:13
<alkisg>
Yes, but you might need -noshm in the x11vnc command line
09:13
x11vnc -noshm -connect alkisg.dyndns.org
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09:19
<lifeboy>
alkisg: gimme a moment, looks like I have some connection problem to that server at the moment
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09:20
<Joanet>
alkisg : xterm works using localapps, and if I launch lsusb it recognize the webcam, but when I try to launch Cheese I got this : Gtk-WARNING **: Attempting to add a widget with type GtkImage to a GtkToggleButton, but as a GtkBin subclass a GtkToggleButton can only contain one widget at a time; it already contains a widget of type GtkLabel
09:21
<alkisg>
Joanet: instead of cheese, run: gstreamer-properties, and test your cam from there
09:21
<Joanet>
alkisg : ok, i'll try
09:22
<alkisg>
dimmah1: I don't know what "with a cd-rom emulator" means, for a printer, but there's no printer device recognized there
09:22
<dimmah1>
alkisg: is it looks like only scsi-cdrom has been connected? Sometimes it's happens with hp 1102. But if i plug it to the server everything's fine.
09:22
<alkisg>
dimmah1: what's the output of udevadm monitor, if you do that on the server?
09:22
Maybe you're missing some hp* packages in the chroot?
09:23
$ dpkg -l 'hp*' | grep ^ii
09:23
...compare the output of that, in your server vs your chroot
09:25
<dimmah1>
after i turned off printer:
09:25
KERNEL[876405.832533] remove /devices/virtual/bdi/0:21 (bdi)
09:25
UDEV [876405.835744] remove /devices/virtual/bdi/0:21 (bdi)
09:25
after turn on:
09:25
KERNEL[876486.763290] add /devices/virtual/bdi/0:21 (bdi)
09:25
UDEV [876486.765444] add /devices/virtual/bdi/0:21 (bdi)
09:25
<alkisg>
Unplug, don't just turn it off
09:27
<lifeboy>
alkisg: I think you are connected, right?
09:27
<dimmah1>
alkisg: OK
09:28
<alkisg>
lifeboy: yup, let's go
09:30
<dimmah1>
alkisg: dpkg -l 'hp*' | grep ^ii
09:30
gives me differt results. On server hplip & hpdata. On client hplip-cups & hpdata.
09:31
should I remove hplip-cups and install hplip on clint?
09:34
<Hyperbyte>
Psst... have you added your LTSP implementations yet to the world map? http://www.ltsp.org/stories/
09:36
<alkisg>
dimmah1: at least install hplip in the chroot...
09:36
<dimmah1>
alkisg: as you said, I unplug and then plug
09:36
KERNEL[877012.215999] remove /devices/virtual/bdi/0:21 (bdi)
09:36
UDEV [877012.218130] remove /devices/virtual/bdi/0:21 (bdi)
09:36
KERNEL[877036.591817] add /devices/virtual/bdi/0:21 (bdi)
09:36
UDEV [877036.593766] add /devices/virtual/bdi/0:21 (bdi)
09:38
<alkisg>
dimmah1: I don't see any printer entries there... no /dev/usb/*
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09:44
<alkisg1>
@#(*&#$ ISP... :)
09:44
(12:42:14 μμ) alkisg: lifeboy: I think your firewall is blocking dhcp requests
09:44
(12:42:44 μμ) alkisg: Try to turn it off when you're not connected with nx...
09:46
<lifeboy>
I'll investigate what's going on. It's always been that way. The LAN is not blocked, only the WAN, but something may have changed in the upgrade to 12.04
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09:46
<alkisg1>
lifeboy: btw I've lost vnc connection, not that it's needed anymore...
09:46
<lifeboy>
alkisg: thanks for your trouble. Muchos gracias!
09:48alkisg1 is now known as alkisg
09:48
<lifeboy>
eh... Muchas Gracias! :-)
09:48* alkisg doesn't know the difference between muchos or muchas :D
09:48
<alkisg>
You're welcome in any case :)
09:48
<Hyperbyte>
lifeboy, you realize alkisg is Greek, right?
09:49
<lifeboy>
Hyperbyte: Yes, I do :-) And neither am I Spanish!
09:49
<Hyperbyte>
I would paste the Greek equivalent of 'thank you' for you to use, but my terminal has a strong distaste for UTF-8
09:51
<lifeboy>
It a local habit here to thank someone in another language (with an accent if verbal) ... in a somewhat light-hearted way
09:59
<dimmah1>
alkisg: still not succeed. But you gave me a clue, I'll switch printer to non cdrom emulation mode. Thanks!
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10:11
<Joanet>
alkisg : I've installed gstreamer but using ltsp-localapps it says command not found, although I've updated the image... what can I do?
10:13
<Hyperbyte>
Joanet, do not send private messages to people in this channel without permission. What you are doing is considered spamming on Freenode.
10:13
<Joanet>
ok, I'm sorry
10:14
<alkisg>
Joanet: $ dpkg -S /usr/bin/gstreamer-properties
10:14
gnome-media: /usr/bin/gstreamer-properties
10:14
gnome-media is the package you want
10:25
<Joanet>
thanks alkisg, now gstream works but I get r/w error on device /dev/video0 . I'll search
10:27
<alkisg>
Joanet: try adding the user to the audio/video etc groups
10:27
ls -l /dev/video0 will tell you the group needed
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10:36
<Joanet>
alkisg: yes, gpasswd -a user video do the trick
10:36
:)
10:36
now, I've to install skype to use it with localapps, but dpkg says skype:i386
10:40
<alkisg>
You probably need the partner repository for skype, ask in #ubuntu to make sure
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11:46
<ltspuser_05>
hello
11:46
<Joanet>
alkisg: skype installed, but when I run it as localapp not window is shown
11:46
and no error is shown
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11:53
<Joanet>
anyone has running skype using localapps?
11:54
<ltspuser_05>
I'm using ltsp 5.3.7 on Ubuntu 12.04 amd64. I've a NAS with CIFS. I've like to mount home user on this share. Is-it possible ?
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11:55
<muppis>
!localapps-xterm
11:55
<ltsp>
Error: "localapps-xterm" is not a valid command.
11:56
<muppis>
Joanet, run ltsp-localapps xterm adn try launch Skype from that terminal so you'll see possible errors.
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11:58
<Joanet>
muppis: no errors. I've run xterm too using localapps but whel I launch skype no messages are shown
11:59
<muppis>
That's strange. It should say something in any case.
11:59
<Joanet>
before installing using apt-get I've installed it using the .deb file downloaded from the website
12:00
I'm thinking about remove it
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12:00
<Joanet>
uninstall the first installation, and reboot the server
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12:07
<ltspuser_01>
Hello, I'm trying to enable support for USB devices on the client and I'm not getting. Has anyone here ever managed to do this in ubuntu 12.04 or 13.04?
12:08
<muppis>
Which kind of USB devices you want to use in clients?
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12:09
<ltspuser_01>
I note that the devices are detected in the client terminal (Ctrl + Alt + F1), using the command fdisk-l. But in the graphical environment (Ctrl + Alt + F7), open the terminal, I can not see the devices using this same command.
12:10
HD external multifunction (there are several).
12:11
<muppis>
By default your terminal in GUI is runned in server, not in client. That's makes a difference there.
12:11
<meamy>
ltspuser_01: did you use "LOCALDEV = True" in your lts.conf
12:12
<muppis>
USB Mass Storage Devices should be automatically shown in client.
12:12
<ltspuser_01>
I also noticed that the file / var / run / ltspfs_fstab not being created in the terminal.
12:14
Yes, LOCALDEV=True in lts.conf and user add in fuse group.
12:16
I've read hundreds of tutorials installation. Have followed all the steps. Not seen any tutorial using Ubuntu 12.04 but, older versions of Ubuntu. I am suspicious that it may be a bug.
12:17
<alkisg>
ltspuser_01: What's the output of `sudo ltsp-info` on your server? Put that to pastebin.com
12:18
<ltspuser_01>
Get it to work by following this article: https://help.ubuntu.com/community/UbuntuLTSP/ltsp-pnp however, I believe that this procedure is for fat clients to thin clients and not
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12:20
<alkisg>
ltspuser_01: do you have ltspfsd installed on your server?
12:21
<ltspuser_01>
I have ltspfs installed in a server. ltspfsd not.
12:22
My pastebin http://pastebin.com/bnPRHXiV
12:24
<alkisg>
ltspuser_01: errr you followed ltsp-pnp, and yet you're using a chroot?
12:25
That shouldn't be the case... ltsp-pnp basically means "don't use a chroot"
12:26
...and actually you have 2 chroots...
12:26
OK, first step, decide on what you want to do. How many chroots? 0, 1, or 2?
12:27
<ltspuser_01>
No. What is that saying quiz using ltsp-pnp all functional. But I noticed that the size of the image created is much larger than in the default installation. This probably. Prevent many customers carry the system out of memory. Then reinstalled everything from scratch without following ltsp-pnp
12:28
2 chroot (1-32 bits and 2 64 bits)
12:29
<alkisg>
ltsp-pnp does generate a big image because it can be used for fat clients too, but that doesn't have any bad effect on client memory, e.g. an 128 mb client may boot from a 5 Gb image without problems
12:29
Why have 2 images just for thin clients?
12:29
What's wrong with using only the 32bits pae one?
12:29
<ltspuser_01>
Do not use chroot as I understand it creates a complete picture of the entire system. This would not work on clients with low memory. Correct?
12:30
<alkisg>
No, not correct
12:30
Can you boot a client with 128 mb ram, if it has a 500 Gb hard disk?
12:30
Sure
12:30
The hard disk size is not related to memory issues
12:30
The ltsp network disk is not loaded in ram
12:31
Its "sectors" are accessed whenever the clients need them, one by one
12:31
Second question: do you only have thin clients, or are you planning to have localapps and fat clients too?
12:31
<ltspuser_01>
Because customers have 32 and 64 bits. Define the dhcpd.conf which the image will load each client.
12:32
<alkisg>
Why? An 64bit thin client can run just as fast using a 32bit ltsp image
12:32
So why have the overhead of maintaining 2 images?
12:33
<ltspuser_01>
I thought that by doing so, customers would have more 32-bit performance. But nothing prevents use only 1 chrrot.
12:33
<alkisg>
Second question: do you only have thin clients, or are you planning to have localapps and fat clients too?
12:37
<ltspuser_01>
I only have thin clients. Not pretend to have Fat Clients. Local APPS (still not sure, can occur).
12:38
<alkisg>
OK, so, I think you should NOT be using ltsp-pnp, and that you should only have one i386 chroot
12:38
Now, are you trying with the amd64 chroot or with the i386 one?
12:38
<ltspuser_01>
Okay, I can work with only one image. I will change it here.
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12:41
<ltspuser_01>
Already tested in two. Now I'm testing the i386 chroot. Just for clarity, I am not following ltsp-pnp ok at the moment. As I mentioned a previous test.
12:42
<alkisg>
OK
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12:46
<ltspuser_01>
Ok removed the 64-bit image. Will work only with the 32-bit image now. But this does not change much my scenario because it will enable the usb devices. Is that even having read all the tutorials, I left something out in the installation?
12:47
<alkisg>
Let's start the troubleshooting now
12:48
!screen_02
12:48
<ltsp>
screen_02: To get a root shell on an Ubuntu thin client: https://help.ubuntu.com/community/UbuntuLTSP/ClientTroubleshooting#Using_a_shell_SCREEN
12:48
<ltspuser_01>
I know it is not usual, but it would be too much to ask ssh access for a closer look? This server is still in the testing phase, so would have no problems for me. There are already three weeks of research and not advancing.
12:48
<alkisg>
Get a local root shell on the client, and run `udevadm monitor` there, and then insert the usb device
12:48
ltspuser_01: do you happen to have epoptes installed?
12:50
<ltspuser_01>
epoptes??
12:51
A shell is active in my lts.conf
12:51
I will run the command and the device usb stick.
12:53* alkisg is kinda busy to help via ssh/vnc right now, maybe in an hour or so...
12:55
<ltspuser_01>
ok, no problem. I understand.
12:55
Just a minute, I'll get a new one and restarting terminal.
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13:01
<sfrique>
Hello
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13:01
<ltspuser_01>
sorry, I'm having trouble connecting the customer. It starts to load and fails in mounting of directories. Just a little more and fix this.
13:01
<sfrique>
can anyone help me?
13:02
i have some questions about watching videos
13:04
<Hyperbyte>
!ask
13:04
<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.
13:04
<ltspuser_05>
I'm using ltsp 5.3.7 on Ubuntu 12.04 amd64. I've a NAS with CIFS. I've like to mount home user on this share. Is-it possible ?
13:05
<Hyperbyte>
ltspuser_05, from an LTSP standpoint, sure. I've heard some DE's like KDE have problems with networked home dirs though. But it's certainly possible.
13:08
<sfrique>
Can a thin client watch a youtube video without lag? I have 100mbs link.
13:10
<meamy>
sfrique: you have to start firefox as localapp, Flash over a remote X connection does not realy work out
13:10
<ltspuser_01>
My client now no longer rises (rs). I will restart the server to see if it resolves. This will cause me to fall in chat (I'm posting server). This brings me back to restart .. Thank you!
13:12
<sfrique>
meamy, so it is a know issue? i can't use it wel? the problem is that my local client will not be able to run firefox wel enough.
13:12
<ltspuser_05>
By now, home is mount via ssh to ltsp server, then the cifs'share is mount. Problem : it's ok, but the mount is on the server and not on the client. I've used /etc/security/pam_mount.conf.xml to do that.
13:13
<meamy>
sfrique: yep at least for me, on all my clients firefox runs local
13:14
<sfrique>
and localy it runs ok?
13:14
<Hyperbyte>
sfrique, it's not a known "issue". It's logical. A thin client runs all it's software on the server. If you're going to play a HD video over the network and you expect it to run flawlessly, you'll need more than 100mbit
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13:15
<sfrique>
Hyperbyte, that is my question, if i have more bandwith it run flawlessly ?
13:15
<Hyperbyte>
I have gigabit here and YouTube plays fine, as long as I don't go full screen. We have 1920xx1080 screens here, so playing a fullscreen video in realtime over network would eat incredibly much bandwidth.
13:16
<sfrique>
Hyperbyte, thanks i was thinking of it, but having all thinclient gigabit ethernet would not be so easy
13:16
<Hyperbyte>
sfrique, you'll have to calculate. :) Bandwidth used for one frame, times the amount of frames per second, is bandwith used.
13:16
<sfrique>
it might be simple try to go with local apps even eith crapy hardware..
13:16
<Hyperbyte>
sfrique, well, here's some ideas.
13:17
If it's only about YouTube, you could install a local YouTube player on the clients. Then you search videos via that player, and not via www.youtube.com.
13:17
<sfrique>
also cross our minds, but problem would be the users..
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13:17
<Hyperbyte>
You could also install a plugin in Firefox which makes YouTube support X video (this writes the video frames directly to the X buffer, removing -a lot- of network overhead)
13:18
<sfrique>
there is this plugin?!?!?
13:18
let me look for it
13:18
Hyperbyte, do you know such plugin?
13:19
<Hyperbyte>
You could also run Firefox as localapp, eliminating any network issues alltogether, but this requires beefy machines, as Firefox is a resource hog. Alternative might be using a different browser.
13:20
<sfrique>
Hyperbyte, i guess best choise here it to see if the plugin you talk about work, if not, g oto local youtube player.. if dont work also, go to localapp... guess this will be my plan!
13:20
thanks for the help.
13:21
<Hyperbyte>
sfrique, http://www.youtube.com/html5 <- start there
13:21
Whatever you're going to do with Firefox plugins, has to eliminate flash.
13:22
Since YouTube supports HTML5, this would be your way to go.
13:22
<sfrique>
i just wanted to know if watch you tube is as hard as i am experience
13:22
i had tried html5, still uses lots of bandwith
13:23
<alkisg>
!flash
13:23
<ltsp>
flash: Yes, flash sucks. Make sure you have LDM_DIRECTX=True in your lts.conf file, or if it's just youtube you're after, try some flash replacing plugin like https://addons.mozilla.org/el/firefox/addon/161869/ (per user installation, gecko-mediaplayer is also needed).
13:23
<sfrique>
from my tests, with 300mbs am able to watch youtube video on full screen with 1280x960, still litle floppy but better than nothing
13:23
<alkisg>
That one uses xvideo, so it's possible to watch youtube fullscreen even on 100 mbps
13:23
<Hyperbyte>
sfrique, for me, with 1920x1080 and HTML5 it works flawlessly even fullscreen - surprise! :)
13:24
<sfrique>
alkisg, thanks!
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13:24
<sfrique>
Hyperbyte, good! it migh me my thin client that is very bad hardware hahaha
13:24
<alkisg>
But of course the downside is that it's not as polished as native flash or html5 video...
13:24
<sfrique>
alkisg, i guess it would not be a problem
13:24
<alkisg>
Youtube HD fullscreen needs 2 gbps
13:25
So it's not doable with gigabit ethernet even for a single client, without dropped frames...
13:25
<sfrique>
alkisg, the addon doesnt exist
13:26
<alkisg>
Hmm too bad it was a nice one... this threads proposes a replacement: http://ubuntuforums.org/showthread.php?t=2050737
13:26
...haven't tried it though
13:26
<sfrique>
alkisg, already had Direct x true
13:27
<alkisg>
1920×1080×4×30 = 248832000, i.e. 2.5 gbps, you won't be able to watch full screen HD video that way even over gigabit lan
13:27
<sfrique>
alkisg, i will look for alternatives for flash
13:27
<alkisg>
http://linterna-magica.nongnu.org/#what-is-it
13:28
Start from that one
13:28
<sfrique>
reading about already
13:28
i am only afraid of what it does when is not a video..
13:28
<alkisg>
It's supposed to have good enough logic to only match video players
13:29
...but, do expect some rough edges...
13:29
!forget flash
13:29
<ltsp>
The operation succeeded.
13:29
<alkisg>
!learn flash as Yes, flash sucks. Make sure you have LDM_DIRECTX=True in your lts.conf file, or if it's just youtube you're after, try some flash replacing plugin like http://linterna-magica.nongnu.org
13:29
<ltsp>
The operation succeeded.
13:30
<sfrique>
thanks for all help
13:31
gonna start to look for alternatives hahaha
13:35
<Hyperbyte>
alkisg, are you sure the addon is needed still?
13:36
With HTML5, I can watch fullscreen video without problems
13:36
At 1920x1080
13:36
Maybe Firefox's HTML5 player is compatible with xvideo now out of the box?
13:37
Hrm, with another video it stutters again... whatever...
13:38
Who needs YouTube, anyways.
13:39
<alkisg>
Hyperbyte: I don't think firefox is using xvideo for html5 playback... it'd be very nice if it did though
13:39
Also, (last tested a year ago), firefox cpu usage was very high for html5 videos
13:40
E.g. 90% for html 5 video, 5% for gecko-mediaplayer plugin
13:40
(of course that depends on cpu, note only the ratio there...)
13:42
<Hyperbyte>
Firefox is such a resource hog. :(
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13:53
<alkisg>
It's the codecs, google chrome cpu usage was much lower
13:53
Something about codec licenses there, didn't dig into it...
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14:10
<lifeboy>
This may not quite be LTSP, probably routing, but: I upgraded an LTSP Server from Ubuntu 10.10 to 12.04 and replaced isc-dns-server with dnsmasq. I had firestarter installed and removed it, since I didn't really need it. I think firestarter was handling the routing, since the clients cannot "see" past the server interfaces now. I do have "net.ipv4.ip_forward=1" in /etc/sysctl.conf though. What am I missing?
14:11
The get proper ip addresses and their gateway and dns server settings are correct
14:12
They get...
14:13
<alkisg>
sudo iptables -t nat -A POSTROUTING -j MASQUERADE
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14:20
<lifeboy>
alkisg: Yes, that did it. I had to do that after removing firestarter, right?
14:20
<alkisg>
Right. Does dnsmasq work fine now without firestarter?
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14:22
<lifeboy>
it seems to yes. I had some issues getting /etc/resolv.conf to keep the dns server, so I simply added the server to /etc/resolvconf/resolv.conf.d/head, which I suppose is a bit of a kludge, but at least it now sticks
14:22
The thin clients boot, but only into initramfs.
14:23
unfortunately they people on the other end have now gone home, so I can't get someone to push buttons there still tomorrow morning...
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14:23
<lifeboy>
till tomorrow morning.
14:26* unkmar is back.
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14:49
<ltspuser_08>
I'm back. The site was inaccessible to me (not sure why).
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14:50
<ltspuser_08>
I used the command udevadm monitor and stick the usb device, note the device is usually added. The same happens when I remove the USB device, it removes it.
14:52
In the shell, I observe that the devices are recognized. The problem is grávica client interface. It's like he's showing only devices the server and not the client.
14:53
<vagrantc>
that's normal
14:53
on a thin client, you're logged into the server.
14:54
it only sees devices on the server
14:54
using ltspfs, it will mount devices in the server's /media/<username>/<devicename>
14:54
<ltspuser_08>
If the devices are seen by the shell of the client, the problem seems to be with the ltspfsd, which is responsible for mounting it.
14:54
<vagrantc>
what is gravica, anyways?
14:55
ltspuser_08: user in the fuse group?
14:57
<ltspuser_08>
sorry. it's graphical interface in a client. I am using a translator, sorry for any errors.
14:57
Yes. User in the fuse group
14:58
<vagrantc>
ltspuser_08: when you plug something in, does anything show in /media/<username>/ ?
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14:58
<vagrantc>
ltspuser_08: you must be using a pretty good translator :)
15:00
<ltspuser_08>
Now I use the command ls-la in / media directory and the username appears, but there is nothing in it.
15:00
<vagrantc>
what sort of USB device?
15:01
<ltspuser_08>
Right now I am connecting an external hard drive.
15:02
<vagrantc>
how is it partitioned, what sort of filesystem is on it?
15:02
<ltspuser_08>
It is usually recognized on a Ubuntu installation location (outside the ltsp).
15:03
Has more than one. A fat 32 and ext4 another.
15:03
<vagrantc>
ltspuser_08: have you fsck'ed the filesystems recently?
15:04
sometimes filesystems will fail to mount without an fsck
15:04
<ltspuser_08>
But see, following the guide pnp, he was recognized by the client usually ltsp. But using chroot it does not recognize. The same happened with a multifunction HP.
15:05
no, I did not. I can do it.
15:06
but this would not explain for example the fact of not recognizing other devices such as multifunctional.
15:09
On this page: https://wiki.ubuntu.com/DebugLocalDev there are a number of tests to try to detect the problem. Passed all except the last test. I have typed the wrong command, although not believe it.
15:10
<vagrantc>
multifunction printers won't be recognized
15:10
it will only work with filesystems
15:11
<ltspuser_08>
Oops! I forgot. The third step is not the case here. There is created the file / var / run / ltspfs_fstab.
15:11
<vagrantc>
ltspuser_08: and does it contain devices?
15:12
ltspuser_08: tail -F /var/run/ltspfs_fstab
15:12
ltspuser_08: and then plug in a device
15:12
<ltspuser_08>
In a client?
15:13
In the shell of the client?
15:13
<vagrantc>
ltspuser_08: yes
15:14
<ltspuser_08>
The file does not exist.
15:15
<vagrantc>
ltspuser_08: what did you mean when you said "There is created the file / var / run / ltspfs_fstab." ?
15:15
<ltspuser_08>
With names are coming: ltspfsd.pid, ltspfs_token and ltsp-xorg.conf
15:16
This file does not exist in / var / run (not listed with ls-la).
15:16
<vagrantc>
ltspuser_08: also, what distro and version is this?
15:16
ltspuser_08: ok, then it's not being recognized by ltspfs
15:17
ltspuser_08: er, not recognized by udev
15:17
<ltspuser_08>
Ubuntu 13.04. But I've also tried with Ubuntu 12.04 It's the same.
15:19
but the shell of the client through the command udevadm monitor, see the device being added.
15:20
<vagrantc>
ltspuser_08: USB device?
15:20
<ltspuser_08>
Yes!
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15:20
<vagrantc>
there might be an issue with it thinking it's not a removable disk...
15:21
ltspuser_08: try setting LOCALDEV_DENY_INTERNAL_DISKS=false in lts.conf
15:21
ltspuser_08: probably in /var/lib/tftpboot/ltsp/i386/lts.conf
15:24
<ltspuser_08>
Ok I made the change. I'm generating a new image.
15:26
<vagrantc>
shouldn't need to generate a new image for changes to lts.conf
15:26
as long as you're using the /var/lib/tftpboot
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15:28
<ltspuser_08>
not work!
15:29
have you seen ltsp on ubuntu 12.04?
15:30
<vagrantc>
not exactly, but it's close enough to Debian that i can fake it :)
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15:31
<vagrantc>
ltspuser_08: add SCREEN_02=shell and SCREEN_DEFAULT=02 to lts.conf and reboot ... then we can get a debugging shell with all the variables set...
15:32
<ltspuser_08>
I ask this because I have read many articles and installation there should be no difficulties in the functioning of local devices. All describe this without more details to configure. I feel that may be something with the distribution.
15:33
<vagrantc>
many users use ubuntu 12.04 with localdevs
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15:34
<ltspuser_08>
Well, then there is hope (rs). Change made ​​by restarting.
15:35
reboot is complete. What should I notice?
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15:39
<vagrantc>
ltspuser_08: you at the shell prompt?
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15:40
<ltspuser_08>
No. It was for the GUI. But I can access it by pressing Ctrl + Alt + F2.
15:40
<vagrantc>
ltspuser_08: it doesn't sound like it's reading your lts.conf, then
15:40
ltspuser_08: unless you left out the SCREEN_DEFAULT entry...
15:42
<ltspuser_08>
[default] #XSERVER=auto LOCALDEV=True SCREEN_02=shell SCREEN_DEFAULT=02 SCREEN_07=ldm
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15:44
<ltspuser_08>
he is reading. I know that is because I had incorrectly specified the first time and saw that it said in the shell "script not found SCREEN_02 = defalut". After he had more correct message.
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15:45
<sbalneav>
Morning all
15:45
<ltspuser_08>
Morning!
15:45* vagrantc waves to sbalneav
15:45
<vagrantc>
ltspuser_08: well, it shouldn't default to the GUI with SCREEN_DEFAULT=02
15:46
unless SCREEN_DEFAULT is broken on ubuntu...
15:46
ltspuser_08: so there is a shell running on tty2?
15:46
ltspuser_08: i.e. ctrl-alt-f2 gets you a shell?
15:47
<ltspuser_08>
Yes!
15:48
<vagrantc>
ok, from that shell, echo $SCREEN_DEFAULT
15:49
<ltspuser_08>
tty=/dev/tty2 root@ltsp21:/#
15:50
<sbalneav>
vagrantc: hey ho
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15:53
<ltspuser_08>
Sorry. get it wrong the first time. echo SCREEN_DEFAULT. Result 02.
15:54
Sorry. get it wrong the first time. echo $SCREEN_DEFAULT. Result 02.
15:57
<vagrantc>
ltspuser_08: ok, sounds like SCREEN_DEFAULT is broken on ubuntu... anyways...
15:58
ltspuser_08: echo $LOCALDEV_DENY_INTERNAL_DISKS
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16:01
<ltspuser_08>
false
16:02
ops.
16:02
1 minute.
16:03
an evolution here.
16:05
I had specified the line LOCALDEV_DENY_INTERNAL_DISKS = false as LOCAL_DENY_INTERNAL_DISKS. When you asked to test the shell noticed the error. Fix and rebooted. Now in / media / user, the device appears (although not created icon on your desktop).
16:07
<vagrantc>
the desktop icon is highly dependent on desktop
16:07
worked with gnome2, no idea with gnome3 ... no other desktops really supported it
16:08
that i know of
16:08
ltspuser_08: so if LOCALDEV_DENY_INTERNAL_DISKS=false fixed it ... there's something wrong with the detection of USB bus...
16:09
<ltspuser_08>
Just to see if I understood. He is treating this drive as an internal disk?
16:09
<vagrantc>
yes, some external hard drive cages do not mark a device as removable
16:10
and by default, ltspfs ignores devices that aren't removable.
16:10
but it should also check if it's on a USB bus, at which point, we assume it's removable...
16:10
so the USB bus check doesn't sound like it's working
16:10
<ltspuser_08>
is how I fix this? tested now with a pen-drive and it's the same.
16:11
<vagrantc>
ltspuser_08: what's the same?
16:12
<ltspuser_08>
Before it was not mounted on / media / user /. Now with this parameter lts.conf recognizes, but does not go to the desktop. Anyway, still working, ie, since I consider this problem solved.
16:12
<vagrantc>
ltspuser_08: you won't get a desktop icon
16:12
ltspuser_08: unless you use a desktop that suppotrs it
16:16
<ltspuser_08>
Ok, got it. Friend, you solved a problem that is mistreating me for three weeks. Do not have words to thank you. Now I just need to fix the sound of skype (rs). The audio on the client usually works, but not on Skype (even pointing to pulse audio). But one thing at a time, after all you should have more things to do. (rs). I will try to solve the skype and if you can not, come back here for help again. Hope you do not fill me.
16:19
<vagrantc>
ltspuser_08: good luck!
16:19* vagrantc wonders what (rs) is?
16:19
<ltspuser_08>
Many, many thanks for your help! I'll publish the results here in the forums Brazil.
16:20
<vagrantc>
ltspuser_08: so there is one side-effect of that issue, though
16:20
ltspuser_08: you should know
16:20
ltspuser_08: with LOCALDEV_DENY_INTERNAL_DISKS=false, if someone boots a laptop with a hard-drive in it, thin clients will access those drives
16:20
ltspuser_08: and have write access to them
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16:23
<ltspuser_07>
No problem. Only customers without HD will have this feature. For this I will specify directly on each client session.
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16:24
<ltspuser_07>
Sorry, I fell (rs).
16:25
Even more. God bless you!
16:25
<vagrantc>
glad to have helped :)
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16:28
<unkmar>
since i've had a hdd failure. I'll be back when I have a new hdd.
16:28
of course, that means I get to completely reinstall all over again. :)
16:28
good thing it only takes about 2 hours now. From the ground up.
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17:06
<Hyperbyte>
!seen knipwim
17:06
<ltsp>
knipwim was last seen in #ltsp 1 week, 6 days, 22 hours, 13 minutes, and 51 seconds ago: <knipwim> !bug
17:08
<alkisg>
2 weeks down time? quite a bug...
17:08
<Hyperbyte>
You mean a bug on knipwim's part?
17:08
Because I think the bot is reporting it accurately.
17:09
Have you seen him?
17:09
<alkisg>
He had said that he's been overworked and needed some time out
17:10
<Hyperbyte>
Right, I got that too.
17:10
<alkisg>
Working on ltsp should be fun, above all, so let him take as much time as he needs :)
17:10
<Hyperbyte>
Going with the two week schedule, we should have a meeting tonight, but there wasn't a date determined in last meeting.
17:10
<alkisg>
Ah
17:11
<Hyperbyte>
So not sure what will happen. I know knipwim didn't send out an invite (not that I'm blaming him, I'm just saying...)
17:12
<alkisg>
It's easter vacations here... people stopped working, maybe we should do the same and postpone it for another 2 weeks :)
17:13
<Hyperbyte>
Yeah, see if knipwim turns up meanwhile. :)
17:16
Meanwhile, I'm doing a PXE installation of Ubuntu 12.04. :-)
17:17
<alkisg>
Piece of cake... did you see my netboot-livecd script?
17:18
<Hyperbyte>
Nope.
17:19
I actually just did yum -y install tftp-server cd /var/lib/tftpboot/ wget netboot.tar.gz tar -zxvf netboot.tar.gz hack dhcpd.conf.... restart dhcpd.... enable tftpd... done
17:19
Easier than I expected it to be.
17:20
<alkisg>
Ah, I'm loopmounting the desktop.iso instead
17:20
It's much faster than downloading packages over the net...
17:20
<Hyperbyte>
Not as much fun though.
17:20
:)
17:20
<muppis>
But you still need to install updates..
17:21* alkisg also has a script to create an updated .iso :D
17:22
<Hyperbyte>
alkisg has a script for everything.
17:22
<alkisg>
The best one is the one that does total_years--
17:23
<Hyperbyte>
When it's bedtime for his kids, he just launches a script
17:23
<alkisg>
...but I think I'll keep its implementation closed source :P
17:23* muppis uses apt-cacher to keep double downloading minized.
17:23
<alkisg>
time for beers, /me waves...
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17:24
<Hyperbyte>
I bet he just typed ./beers
17:24
<muppis>
:)
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17:25
<muppis>
My boss asked me to start play with Raspberry Pi and LTSP soon. :)
17:26
<vagrantc>
i've been pretty-ifiying my howto...
17:26
<muppis>
When I told him about possibility he went back to pc and ordered 10 rpi's..
17:27
<vagrantc>
muppis: http://cascadia.debian.net/trenza/Documentation/raspberrypi-ltsp-howto/
17:27
<muppis>
vagrantc, thanks. I was about to ask that. :)
17:27
<vagrantc>
muppis: but honestly, i'm unimpressed with the rpi as a thin client.
17:28
muppis: although, i haven't bothered trying to get the proprietary GPU drivers working
17:28
muppis: that might make a difference
17:31
<muppis>
I think I could try that. Altought I got few more important projects to be finished before I can get my hands on those little things.
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17:34
<muppis>
vagrantc, I'll report back to you if I get some improvments. :)
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18:17
<epoptes_user6>
salam
18:17
hello
18:19
ok
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18:20
<muppis>
Impatience..
18:29
<vagrantc>
the hurrier we go, the longer we wait
18:30
<muppis>
Yeah.
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20:14
<kev_j>
How would I edit the cmdline for the rpi cmdline.txt file if I use nbd? what I have right now is I added "init=/sbin/init-ltsp root=nbd nbdroot=/dev/nbd0" to the beginning and deleted root= and rootfstype=...
20:17
<alkisg>
Where's vagrantc's how to for rpi? /me hasn't ever booted linux in arm, and is wondering about the boot loaders there....
20:17
<vagrantc>
root=/dev/nbd0 nbdroot=192.168.67.1:/opt/ltsp/armhf ... if i remember correctly
20:18
it's the same arguments as if you were doing NBD on x86, and having to specify the ip address from the commandline
20:18
<alkisg>
But where do you put those? There's no pxe, is there?
20:18
<kev_j>
ok, wasn't sure if I needed the address in that file... in the readme it only has instructions for nfs
20:19
you put them in the cmdline.txt file
20:19
<vagrantc>
could probably even get by with root=/dev/nbd0 boot=local nbdroot=/opt/ltsp/armhf if your DHCP server was the same as your LTSP server.
20:19
alkisg: on the SD card
20:19
alkisg: on arm, it's highly variable
20:20
i.e. raspberry pi is a little unusual in that the bootloader code is just some stuff on the sd card...
20:20
<kev_j>
I guess I couldn't really put it in the dhcpd.conf file since it doesn't pxe boot, huh?
20:20
<vagrantc>
yes, but the initramfs still makes a dhcp request
20:20
you need the kernel+initrd on the SD card, and some settings in cmdline.txt
20:20
good luck, gotta roll
20:20
<kev_j>
thx
20:21
<alkisg>
Got it, http://cascadia.debian.net/~vagrant/rpi-ltsp-howto.txt
20:21
<vagrantc>
there's a new one
20:21
cascadia.debian.net/trenza/Documentation/raspberrypi-ltsp-howto/
20:22
<kev_j>
that's the one I am using (the trenza one)
20:22
<vagrantc>
it's slightly prettied up :)
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20:25
<alkisg>
Ah, no boot loader needed in the sd card at all...
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