IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 3 January 2014 (all times are UTC)
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| 00:30 | <alkisg> Pushed, I hope there are no regressions
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| 05:43 | <gdi2k> I have one machine which is not showing up on epoptes for some reason - there is nothing unique about this machine - it doesn't have its own lts.conf section or anything like that. it's always the same machine. any ideas?
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| 08:01 | * alkisg waves to vagrantc | |
| 08:02 | <gdi2k> alkisg, good morning! :) I'm trying to get a fat client with two monitors to accept my xrandr line with XRANDR_COMMAND_01 - can I do that with fat clients?
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| 08:02 | <alkisg> Sure, I think it's _1 though
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| 08:02 | <gdi2k> (I saw you committed that bug fix, so you're probably the right guy to talk to)
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| 08:03 | * vagrantc waves to alkisg | |
| 08:03 | <alkisg> And for the fun of it, some hours ago I pushed a fix that accepts _01 too :D
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| 08:03 | <gdi2k> lol - ok trying with 1
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| 08:03 | <alkisg> Errrr although not for XRANDR_COMMAND, I need to do that too :(
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| 08:04 | vagrantc: do you have some time to talk about directive names?
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| 08:04 | We want to run scripts on these phases: INITRD/INIT/RC/DM/AUTH/LOGIN/SESSION/PERIODIC/LOGOUT/SHUTDOWN
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| 08:04 | (or in general, have hooks there)
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| 08:04 | ltsp-cluster has boot, prompt, login|ldm, logout, refresh
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| 08:04 | RUN_PHASE_0? Or PHASE_COMMAND_0?
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| 08:04 | And, if the PHASE names are OK...
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| 08:04 | E.g. I don't like PERIODIC at all
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| 08:05 | <gdi2k> alkisg, thank you, it works with 1, not 01
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| 08:06 | <vagrantc> alkisg: periodic ~= cron ?
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| 08:06 | <alkisg> vagrantc: yes, ask the server periodically to check for new things to do
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| 08:06 | E.g. shutdown_time=now
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| 08:08 | The shutdown event is to notify the server to release possible resources (swap? dns entries?) that the client needed
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| 08:13 | * alkisg wants to start cleaning up the "get configuration from the server" part, so that then applying ltspd client-side is the same as changing 1 function only | |
| 08:17 | <alkisg> vagrantc: isn't /run a better place for ltsp_config_env, than /var/cache ?
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| 08:20 | <vagrantc> alkisg: sure, it's just /var/cache was there long before /run existed
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| 08:20 | <alkisg> vagrantc: /var/run ?
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| 08:20 | <vagrantc> well, we decided on cache
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| 08:21 | since it was... cached values
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| 08:21 | obviouslt couldn't survive a reboot
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| 08:21 | <alkisg> Are they supposed to survive reboots?
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| 08:21 | <vagrantc> that's what /var/cache is for
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| 08:21 | <alkisg> Also, they're not cached values
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| 08:21 | <vagrantc> data that could be recreated, but nice to cache if you can
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| 08:21 | <alkisg> They can't be recreated
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| 08:22 | <vagrantc> but sure, /run would be a better place for it
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| 08:22 | you feed them the same input, and they'll produce the same data.
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| 08:25 | * vagrantc hopes most distros have adopted /run by now | |
| 08:26 | <vagrantc> or at least /var/run
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| 08:26 | <alkisg> We already rely on it... if it doesn't exist somewhere, we can create/symlink it on boot
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| 08:27 | <vagrantc> what relies on /run in the current code that isn't related to initramfs-tools ?
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| 08:27 | * alkisg was thinking initramfs tools, sorry :) | |
| 08:27 | <vagrantc> which is pretty distro-specific
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| 08:28 | <alkisg> The dir doesn't matter much, the main thing I want to do is to clean up our client-side configuration code
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| 08:28 | For example, to merge all ltsp-cluster calls with the main "ltsp_config" calls
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| 08:29 | ltsp-cluster was right there, we do need to poll lts.conf in various phases
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| 08:29 | <vagrantc> right
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| 08:30 | <alkisg> So basically ltsp_config will somehow grow a parameter, for the phase where we're calling it from
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| 08:32 | vagrantc: what's the difference between /var/cache/ltsp/ltsp_config and /var/cache/ltsp/ltsp_config_env ?
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| 08:34 | Hehe, ALTLinux is always special!... ./client/ALTLinux/initscripts/ltsp-client-setup.default:temp_copy_dirs="/var/cache/ltspconf"
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| 08:34 | <vagrantc> alkisg: i don't remember
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| 08:35 | <alkisg> vagrantc: I think init-ltsp.d/04-server just needs to call set_lts_var instead of echo >> ltsp_config
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| 08:35 | <vagrantc> there was some login to ltsp_config ltsp_config_env
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| 08:37 | <alkisg> $ grep -rl /var/cache/ltsp/ltsp_config .
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| 08:37 | ./client/getltscfg-cluster/getltscfg-cluster
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| 08:37 | ./client/share/ltsp/init-ltsp.d/04-server
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| 08:37 | ./client/share/ltsp/init-ltsp.d/01-clean-cache
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| 08:37 | ./client/share/ltsp/init-ltsp.d/03-kernel-cmdline
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| 08:37 | ./client/share/ltsp/ltsp_config
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| 08:37 | ./client/share/ltsp/ltsp_config.d/00-ltspconfig-cache
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| 08:37 | ./client/Debian/share/ltsp/init-ltsp.d/50-client-mac
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| 08:38 | I think these need to be "converted" to use set_lts_var
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| 08:39 | <vagrantc> some logic to the two files...
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| 08:39 | but i don't remember, and i'll sleep on it. :)
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| 08:39 | * vagrantc thinks this is some code that has flip-flopped several times | |
| 08:40 | <alkisg> ...and it still doesn't make sense :)
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| 08:40 | Goodnight vagrantc
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| 08:49 | <gdi2k_> alkisg, I have one fat client not showing up in epoptes - how can I go about diagnosing the issue? it isn't different to other clients and has no specific lts.conf entry etc.
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| 09:14 | <alkisg> gdi2k_: try putting this in lts.conf: EPOPTES_CLIENT_VERIFY_CERTIFICATE=False
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| 09:14 | ...and reboot client
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| 09:28 | <gdi2k_> alkisg, still the same
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| 09:28 | <alkisg> gdi2k_: it doesn't show up at all after the reboot?
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| 09:29 | Or it shows up for a while, and then disconnects?
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| 09:30 | <gdi2k_> alkisg, no, it never shows up. I just rebooted and watched carefully
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| 09:31 | <alkisg> gdi2k_: ok, login and run /usr/sbin/epoptes-client manually, and see its output
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| 09:34 | <gdi2k_> alkisg, it shows "Connecting to [serverip]:789... done...
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| 09:34 | nothing more
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| 09:34 | <alkisg> gdi2k_: it says done, and you still don't see it in the ui?
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| 09:34 | <gdi2k_> yes, not showing up still
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| 09:35 | <alkisg> It's an ltsp fat client, right?
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| 09:35 | <gdi2k_> yes
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| 09:35 | like the others, but all the others show up
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| 09:35 | <alkisg> OK I don't know, want me to check with remote support (vnc)?
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| 09:35 | <gdi2k_> that would be fantastic! do you have x2go ?
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| 09:35 | <alkisg> x11vnc -connect alkisg.dyndns.org, both from the client and the pc where the epoptes ui runs
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| 09:36 | <gdi2k_> ah ok
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| 09:36 | <alkisg> It's also in the epoptes ui help menu :)
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| 09:36 | <gdi2k_> hehe
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| 09:37 | client missing is 164 - connecting now...
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| 09:41 | <alkisg> gdi2k_: ok,
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| 09:41 | it was a known problem (2 vga cards) that was solved 2 years ago
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| 09:41 | You just have an old epoptes version
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| 09:41 | I manually applied the fix,
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| 09:41 | <gdi2k_> alkisg, ah ok, thanks so much!
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| 09:41 | <alkisg> now you need to (1) reboot clients (2) while they're rebooting, run sudo service epoptes restart, (3) restart epoptes UI
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| 09:45 | <gdi2k_> alkisg, magic, working now :)
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| 09:45 | <alkisg> :)
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| 09:46 | <gdi2k_> and you're right, it does have two graphics cards! from the days I was playing with multi-seat configs
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| 09:47 | good idea to update epoptes using the ppa? https://launchpad.net/~epoptes/+archive/ppa
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| 09:56 | <alkisg> Yes it's a good idea
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| 09:56 | It's stable
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| 09:56 | <gdi2k_> ok will do, thank you
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| 12:40 | <alkisg> http://lartc.org/howto/lartc.ratelimit.single.html
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| 13:02 | <alkisg> http://serverfault.com/questions/174010/limit-network-bandwith-for-an-ip
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| 13:02 | # tc qdisc del dev vboxnet0 root
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| 13:02 | # tc qdisc add dev vboxnet0 root handle 1: htb default 1
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| 13:02 | # tc class add dev vboxnet0 parent 1: classid 1:1 htb rate 1mbps ceil 2mbps
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| 15:14 | <other_other_joe> does anyone know the specifics on how the /etc/passwd file in the chroot is put together, post boot?
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| 15:14 | it looks to be a composit of the ltsp servers passwd and it's own?
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| 15:29 | <||cw> other_other_joe: yeah, the info for the logged in user only is copied to it durring client setup process
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| 15:30 | <work_alkisg> Yey!!! TCP rate limiting worked around the notorious ethernet flow control issue!!!
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| 15:30 | work_alkisg is now known as alkisg | |
| 15:36 | <alkisg> Before tcp rate limiting:
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| 15:36 | [ 5] 0.0-10.2 sec 18.5 MBytes 15.3 Mbits/sec
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| 15:36 | [ 4] 0.0-10.1 sec 18.0 MBytes 14.9 Mbits/sec
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| 15:36 | After:
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| 15:36 | [ 5] 0.0-10.0 sec 66.1 MBytes 55.3 Mbits/sec
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| 15:36 | [ 4] 0.0-10.0 sec 66.1 MBytes 55.3 Mbits/sec
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| 15:38 | <||cw> so I got pulled away yesterday.... I have a dhcpd process running, and 'service isc-dhcp-server' starts and stops the process but with errors in the log, but process still runs. but /etc/init.d/isc-dhcp-server stop errors without stopping, and start errors out and same errors in the log but no process running. is that a isc-dhcp-server scripts packaging issue, or is ltsp modifying the upstart config and not the init.d config?
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| 15:39 | <alkisg> ||cw: paste some logs and errors, it sounds like an issue in your configuration...
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| 15:39 | <||cw> also on the errors in the logs, "No subnet declaration for eth1 (10.213.1.1)" but ltsp/dhcpd.confg has a "subnet 10.213.1.0 netmask 255.255.255.0" section, and eth1 has the IP mentioned
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| 15:40 | I had this working 2 weeks ago, but had to start over and I'm totally failing to see what I've done different
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| 15:40 | <alkisg> Put all of your configuration to pastebin
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| 15:40 | dhcpd.conf, ip addresses etc etc
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| 15:42 | <other_other_joe> the logged in user does get appened, yea. some extra goodies are making there way into etc password somehow though and I'm trying to figure out from where
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| 15:42 | <||cw> http://pastebin.com/sTZ0skhq
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| 15:42 | ifconfig and route both show what I'd expect for that interfaces file
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| 15:42 | <other_other_joe> a user that was in my servers /etc/passwd but has since been dropped is still making his way into the /etc/passd on the booted fat client
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| 15:43 | <alkisg> ||cw: also the /etc/default/*dhcp* file
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| 15:43 | (don't remember the exact name, it's been years since I've switched to dnsmasq)
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| 15:43 | <||cw> I added eth1 to interfaces, this is the process that's running: dhcpd -user dhcpd -group dhcpd -f -q -4 -pf /run/dhcp-server/dhcpd.pid -cf /etc/ltsp/dhcpd.conf eth1
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| 15:45 | /etc/default/isc-dhcp-server has INTERFACES="eth1"
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| 15:45 | <alkisg> I think you're supposed to leave that empty for an easier configuration, but ok that sounds fine
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| 15:45 | And the output of service isc stop / start?
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| 15:45 | <||cw> sure, but I don't want it listening on eth0
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| 15:45 | <alkisg> It won't, since it doesn't have a subnet there
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| 15:45 | From dhcpd.conf
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| 15:46 | <||cw> isc-dhcp-server start/running, process 23990
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| 15:46 | <alkisg> ...so it runs fine?!
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| 15:46 | <||cw> but gives that error in the logs
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| 15:47 | <alkisg> The exact error is this? "No subnet declaration for eth1 (10.213.1.1)"
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| 15:47 | <||cw> ah, so now taking like out of the defaults file, it no longer errors on eth1, but does on eth0, which I guess is OK
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| 15:47 | <||cw> weird.
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| 15:49 | <alkisg> I think the correct way to edit that file is with sudo dpkg-reconfigure isc*
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| 15:52 | <other_other_joe> indeed
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| 15:54 | <||cw> k, so on the init vs init.d, is it ltsp that adds the /etc/ltsp/dhcpd.conf check to the script, or is that in the isc-dhcp-server package? the 2 scripts are out of sync.
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| 15:55 | i know service is the preferred way, but if init.d is broken it should say so, or just call the service commands
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| 15:55 | but is that an ltsp issue or an isc issue?
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| 15:56 | hm the 2 script don't even keep the pid in the same place, so i'm guessing it's a bigger isc issue.
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| 16:04 | <alkisg> ||cw: ah, isc ships both a sysvinit script and an upstart job, and they don't even match each other/
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| 16:05 | <||cw> yeah, i think that confused me at the start and got me off track
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| 16:05 | <alkisg> Yeah it sounds like you should file a bug report to dhcp
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| 16:05 | <||cw> yup, doing it now
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| 16:05 | <alkisg> I think that it shouldn't have 2 scripts
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| 16:05 | If built on debian, it should ship the sysvinit script, and if built on ubuntu, the upstart job
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| 16:06 | I wonder if you have both of them because of some upgrade?
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| 16:06 | * alkisg hopes ltsp doesn't have anything to do with all that... | |
| 16:13 | <||cw> well, the sysvinit doens't do ltsp/dhcpd.conf detection...
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| 16:14 | at least ubuntu's version doens't
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| 16:15 | ubuntu's samba package just puts "if upstart bail" code in the sysvinit script, which would be good enough for me
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| 16:17 | it's not an upgrade, started from 13.10 mini.iso and installed minimal, then added ltsp-server-standalone
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| 16:18 | even if it were an upgrade, good packaging would remove unmodified obsolete scripts
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| 16:18 | <alkisg> Sure, I'm just trying to help pinpoint where the blame is
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| 16:19 | <other_other_joe> alksig: do you know off the top of your head what files are parsed to build the /etc/password file when a client boots?
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| 16:20 | <alkisg> other_other_joe: the server's /etc/passwd and group
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| 16:21 | <other_other_joe> it then combines it with the /etc/passwd in the choot and then tacks on the ldm logged in user?
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| 16:22 | <alkisg> Yes, it keeps a backup of the client's /etc/passwd in /var/ltsp/somewhere, and merges them with what it gets from the server
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| 16:25 | <other_other_joe> there's my culprit
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| 16:25 | $CHROOT:/var/cache/ltsp-localapps/passwd
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| 16:25 | it doesn't seem to be re-caching these
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| 16:26 | <alkisg> It only gets them once, it needs rebooting to get them again
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| 16:26 | <other_other_joe> they're in my chroot for some reason
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| 16:26 | I'm assuming they shouldn't be...
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| 16:26 | so they're there perminantly
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| 16:27 | <alkisg> OK, that would cause problems... ltsp should delete them on boot though, but never mind, we'll be switching to libpam-sshauth anyway :)
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| 16:27 | <other_other_joe> haha
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| 16:28 | with ltsp6?
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| 16:28 | <alkisg> Yup
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| 16:28 | <other_other_joe> hope that plays nice with ldap :)
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| 16:29 | <alkisg> Making ltsp work with pam means that you'll only need to change a couple of lines to switch from libpam-sshauth to ldap, samba etc
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| 16:31 | <other_other_joe> If I remember correctly I already needed to play with pam in the chroot a bit to get it to play nice with ldap in order to get the screenlock to correctly unlock
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| 16:31 | since it re-auth's an' all
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| 16:31 | so I'm not scared
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| 16:32 | <||cw> pam is really pretty awesome, really long lived without any perceptible major changes
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| 16:34 | <other_other_joe> either of you using NFS for your root still or strickly NBD?
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| 16:35 | <alkisg> NBD, AOE, NFS... sure
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| 16:35 | <other_other_joe> i was reading about the kiwi folks using AOE
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| 16:36 | NFS seems nice and resilient though
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| 16:36 | <alkisg> Speed: AOE > NBD > NFS
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| 16:37 | Stability: AOE ~= NFS > NBD
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| 16:37 | <other_other_joe> NBD will choke if my server dies though, yea?
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| 16:37 | it won't re-connect when the server comes back up I mean?
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| 16:37 | <alkisg> If your server dies, ssh, X, and pretty much everything in the running client will die too
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| 16:37 | So it doesn't matter anyway
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| 16:37 | <other_other_joe> well, they're fat
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| 16:37 | so, none of that really matters
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| 16:37 | <alkisg> The ssh connection won't get reestablished
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| 16:38 | So you'll lose the sshfs home under your running processes
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| 16:38 | And all the data will get lost
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| 16:38 | <other_other_joe> home's are nfs too
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| 16:38 | <alkisg> That's a bit better then
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| 16:38 | <other_other_joe> I can reboot my server now, they'll freeze, but then pick up where they left off just fine
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| 16:39 | <alkisg> NFS is the best way to share /home, indeed. We only have sshfs to compare it to, not NBD nor AOE.
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| 16:39 | <other_other_joe> I'd like to force nfsv4 for the root though
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| 16:39 | it's defaulting to v3
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| 16:40 | <alkisg> FSTAB_x in lts.conf for /home?
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| 16:40 | Ah, for the root
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| 16:40 | <other_other_joe> oh, for home v4 is working fine
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| 16:40 | <alkisg> initramfs-tools don't support nfs4
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| 16:40 | <other_other_joe> oh
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| 16:40 | <alkisg> You'd need dracut for that or something
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| 16:40 | <other_other_joe> hmm
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| 16:41 | I was reading up on pNFS after we talked about it a while back
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| 16:41 | I couldn't really work out a good way to implement it without building out a reasonably expensive storage cluster
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| 16:42 | <||cw> stgraber: really? "you get errors because you're running the wrong script" is the solution? I've using debian so long that /etc/init.d/ is something my fingers do on their own, leaving that file there to do something unexpected is a bug.
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| 16:43 | <other_other_joe> my fingers just don't wanna type service etc etc
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| 16:43 | <alkisg> other_other_joe: where would you use pNFS? To balance /home into different servers?
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| 16:43 | E.g. locally too?
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| 16:44 | <other_other_joe> yea I was thinking that
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| 16:44 | for high availability
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| 16:44 | <||cw> at least service has tab completion now, maybe I can start to re-train now.
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| 16:44 | <alkisg> But then if one client had an issue, the user would go to another client, and ...wouldn't find his /home/username? Or does it do duplication too?
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| 16:45 | <other_other_joe> yea, it would duplication amount 3 servers
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| 16:45 | if you were using ceph or gluster or something
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| 16:46 | I've decided to go another route though. I've got 2 nodes clustered together sharing a primary/primary drbd volume
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| 16:46 | home is mirrored to both nodes
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| 16:47 | <alkisg> How many clients do you have?
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| 16:47 | <other_other_joe> if one dies, traffic is auto routed to the other with 30 seconds
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| 16:47 | about 70
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| 16:47 | <stgraber> ||cw: removing those scripts will just make our delta with Debian worse so I won't do that, checking for every non-sysvinit init system in the init script isn't very practical either so that's being discouraged. The real fix would be to have lsb's init-functions do the check and show an error message at that point (which would magically consistently apply to all existing init scripts)
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| 16:47 | <alkisg> other_other_joe: and e.g. 2 bonded gigabit nics + an ssd disk for /home aren't enough?
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| 16:48 | <other_other_joe> have those as well
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| 16:48 | <||cw> stgraber: oh I'm not suggesting to remove it, but should not be feature equivalent? they aren't
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| 16:48 | <stgraber> ||cw: but all of that mess is currently tied into the systemd vs upstart discussion so nobody really wants to do anything until it's settled
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| 16:48 | <other_other_joe> each box has 2 bound gigabit NICs in mode and 2 SSD's in RAID1
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| 16:48 | <||cw> stgraber: it's not just that it fails, it's that what the 2 scripts do is out of sync
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| 16:49 | <other_other_joe> my whole operation is running on them though
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| 16:49 | <stgraber> ||cw: if Debian had an active maintainer who cared about the init.d script, they may end up being in sync, unfortunately that's not the case and I only care about the upstart jobs
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| 16:49 | <other_other_joe> they have to be fast as sh** and always up
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| 16:49 | <||cw> stgraber: once has ltsp/dhcpd.conf detection, one doens't
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| 16:49 | and would it be horrible if they used the same PID file?
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| 16:49 | given those 2 things, you could run either and it would behave as expected
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| 16:52 | <other_other_joe> the NFS read/writes from web browsers are still adding a bunch of traffic I'd like to cut down though
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| 16:52 | <stgraber> ||cw: so to clarify, the policy is that when something is upstartized, Ubuntu no longer cares about the init.d (sysvinit) script and simply let Debian deal with those. Debian doesn't want ltsp/dhcpd.conf so that file isn't there, as for the pid file location, Ubuntu needs it in a separate dir as we run our daemon unprivileged, Debian doesn't drop privileges so uses the default pid file locaiton.
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| 16:52 | <other_other_joe> I'm trying to work out a good implementation of profile-sync-daemon or similar into my setup
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| 16:53 | and dump browser cache to a tmpfs
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| 19:39 | <judy_> hello
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| 19:39 | we are looking for LTSP for SUSE 11
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| 19:39 | could you help us with the link to download the package
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| 19:41 | <vagrantc> !opensuse
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| 19:41 | <ltsp> opensuse: http://en.opensuse.org/LTSP
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| 19:41 | <vagrantc> !kiwi-ltsp
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| 19:41 | <ltsp> kiwi-ltsp: for kiwi-ltsp related questions, you can also ask in the #kiwi-ltsp freenode IRC channel, or visit http://en.opensuse.org/LTSP
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| 19:41 | <vagrantc> judy_: ^^
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| 19:41 | <judy_> and it will be the same in SUSE 11 ??
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| 19:42 | * vagrantc doesn't use suse... | |
| 19:44 | <vagrantc> cyberorg: does the kiwi-ltsp opensuse stuff work on suse as well?
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| 19:54 | <||cw> stgraber: is /var/lib/dhcp/dhcpd.leases supposed to be chown root:root? seems odd since it runs under user dhcpd
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| 20:01 | <stgraber> ||cw: I'd have to re-read the code to refresh my memory there but I think it was a change which happened between the switch from the Ubuntu patch to upstream's paranoid option. In the past the lease file would be opened after privileges were dropped (so owned dhcpd:dhcpd) but nowadays dhcpd drops privileges after opening the fd so the file can be root owned.
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| 20:02 | though if you got an actual error from dhcpd saying it couldn't open it, then maybe that changed again somehow...
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| 20:10 | <||cw> yeah, it's failing. each new client I get dhcpd: Can't create new lease file: Permission denied
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| 20:10 | and I'm not the only one http://ubuntuforums.org/showthread.php?t=2141740
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| 20:11 | <vagrantc> sounds like it should be a bug report rather than a forum post...
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| 20:13 | <||cw> I think that was just trying to gauge if it was a bug or him doing something dumb... like I do here :)
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| 20:14 | I'm going to comment out the chown root code and run a while and see what happens.
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| 20:17 | what's bugging me about this... I have this basic server vm, copied to a new host but kept the original, config'd everything, no issues that I noticed. raid card flacked and lost it all. go back to the original and copy again and all these issues.
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| 20:17 | so did i just ignore them the first time, or did i do something different to screw it up?
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| 20:18 | <vagrantc> did the mac addresses change at all?
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| 20:18 | <||cw> no, but I'm not sure that would mater
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| 20:19 | <vagrantc> it could end up rearranging the device order
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| 20:19 | <||cw> it started with a single nic
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| 20:19 | <vagrantc> but that would cause other issues, not what you're experiencing
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| 20:20 | <||cw> I added the 2nd nic just before installing the ltsp package
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| 20:20 | <||cw> well, mostly I'm experiencing issues with dhcpd packaging, but it seems if i'd ignored them it would work properly, at least for a while
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| 21:25 | <alkisg> Anyone knows `tc` well, to help in scripting the solution to the ethernet flow control issue? https://www.mail-archive.com/ltsp-discuss@lists.sourceforge.net/msg41605.html
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| 21:30 | <alkisg> lartc.pdf... 150 pages... ok how bad can that be? :P
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| 21:33 | <vagrantc> has this always been a problem? or is it some recent change?
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| 21:33 | <alkisg> It's always been a problem
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| 21:33 | <vagrantc> did something make it worse, or did someone just finally figure it out
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| 21:33 | <alkisg> And we had to throw away some hardware like e.g. gigabit atheros NICs
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| 21:34 | I figured out a way to work around broken cases where the flow control can't be disabled
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| 21:34 | Now I need to find a good way to script the solution
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| 21:34 | Either as part of epoptes, or as part of ltsp (optional setting)
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| 21:37 | <vagrantc> the problem is essentially a gigabit nic on the server sending data too fast for the 100mb nic on the client, and the switch throttles the server?
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| 21:37 | <alkisg> Basically it was possible for a gigabit server <=> switch connection to only work at 100 mbps or even less, because of bad firmware in nic and switch
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| 21:37 | Yup, like you said it
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| 21:38 | Good switches or good server NICs can solve the problem, but when those don't exist, a workaround is needed, and I think I just found one...
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| 21:38 | Previously, a teacher that had a laptop with atheros nic couldn't make it an ltsp server with 100mbps clients, now he'll hopefully be able too..
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| 22:03 | <||cw> alkisg: does it need to match client ip's, or could it match protocols instead?
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| 22:04 | <alkisg> ||cw: currently I made it work by matching client IPs and sending them to their own class that limits the bandwidth
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| 22:04 | If I used a single class for all of them, I couldn't limit the bandwidth per client
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| 22:04 | <||cw> ah
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| 22:05 | <alkisg> I do hope there's another way that doesn't involve finding out the client IPs...
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| 22:06 | <||cw> does dhcpd support any hooks that could add a class and filter when handing out a new ip?
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| 22:08 | <alkisg> We can use the nbd server hooks, or we can implement that in epoptes which manages all the client IPs anyway,
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| 22:09 | but first I want to see if it's doable with some other way...
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