IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 7 February 2020 (all times are UTC)
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| 02:28 | <map7> I'm getting a BadAlloc when running a localapp in a debian 10 thin client
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| 02:28 | The application is xeoma.app
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| 02:30 | Full error: https://pastebin.com/fk0xubWM
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| 02:31 | In my debian 9 chroot it works
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| 02:31 | I'm trying to upgrade my chroot to debian 10
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| 02:32 | I'm running LTSP 5.5
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| 02:32 | LTSP 5.18 I mean
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| 02:44 | Difference in packages between the working chroot and broken chroot: https://gist.github.com/map7/8e5ce3adbd4b9829c10032d1795d9412
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| 04:01 | <alkisg> How much RAM and VideoRAM does the client have?
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| 04:01 | map7: ^
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| 04:05 | Also, /var/log/Xorg.7.log and the output of glxinfo on the client could be useful
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| 04:05 | See also https://bugs.freedesktop.org/show_bug.cgi?id=104351
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| 04:13 | <map7> 8GB RAM, 512MB VideoRAM on an intel GPU
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| 04:15 | <alkisg> map7: ...why are you running thin clients instead of fat clients then?
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| 04:16 | Does it work on that client if you launch debian locally, without ltsp?
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| 04:16 | *debian 10
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| 04:17 | <map7> glxgears doesn't work
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| 04:18 | we are upgrading from debian 8 to debian 10 and they were running thin clients
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| 04:19 | <alkisg> I mean, (1) if it won't run on local debian, then it's not an ltsp issue, and
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| 04:19 | <map7> it was working on that client under debian 9
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| 04:19 | as a thin client
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| 04:19 | <alkisg> (2) since fat clients will perform better, I would suggest moving to a fat chroot along with the update
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| 04:20 | Yes, for example if it's a regression to xorg, you should report it to xorg and debian, not to ltsp, that's what I'm saying
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| 04:20 | It's the first move to see if a (hard) problem is specific to ltsp or not
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| 04:20 | <map7> well it works on the server, just not on the thin clients in Debian 10
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| 04:21 | <alkisg> And the server has the same graphics card?
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| 04:21 | <map7> no it's virtualised
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| 04:21 | ok I see what saying
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| 04:21 | <alkisg> Then that test didn't actually answer any question
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| 04:22 | I've seen dozens of xorg bugs that only happen to specific revisions of specific graphics cards
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| 04:22 | Also note that a fat chroot might have more packages/dependencies, and automatically solve that problem, and give you a whole lot better client performance
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| 04:26 | <vagrantc> wow. yeah. 8GB of ram? fatclient. no question....
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| 04:29 | <map7> ok I'll try a fat client.
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| 04:32 | What argument do I put after --fat-client-desktop?
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| 04:32 | doesn't seem to mention it in the help
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| 04:33 | <alkisg> In your thin chroot, install a desktop
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| 04:33 | cp -a /opt/ltsp/amd64 /opt/ltsp/amd64.thin
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| 04:33 | ltsp-chroot -m amd64
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| 04:33 | <map7> oh ok. I'll just install xfce4
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| 04:33 | <alkisg> apt install whatever-desktop
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| 04:33 | <map7> thanks
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| 04:49 | alkisg: the fat-client worked
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| 04:50 | with the xeoma.app software
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| 04:52 | <alkisg> Yey :)
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| 04:53 | Thin clients are a thing of the past anyway... until consumer-grade GPUs or CPUs can do what google stadia does :)
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| 10:51 | <unseenhero42> hi, I,ve installed the new ltsp but printing is not working on the clients
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| 11:02 | <alkisg> unseenhero42: where is the printer, on the server?
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| 11:02 | Did you enable printer sharing on the server?
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| 11:05 | <unseenhero42> no
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| 11:05 | ill check it
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| 11:05 | thanks
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| 11:05 | <alkisg> Then you need to do that; see the ltsp.conf man page
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| 11:05 | !ltsp.conf
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| 11:05 | <ltspbot> ltsp.conf: Configuration file for LTSP: https://ltsp.org/man/ltsp.conf/
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| 11:05 | <unseenhero42> also the new ltsp doen't have lts.conf
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| 11:05 | <alkisg> Read the instructions under CUPS_SERVER there; you don't need anything in ltsp.conf though
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| 11:06 | IF you need ltsp.conf, read the instructions again at the top of that man page
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| 11:06 | It's now called ltsp.conf instead of lts.conf
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| 11:06 | <unseenhero42> ok thanks im still used to the old stuff
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| 11:07 | <alkisg> No worries; keep in mind that I've documented all the common things in man pages, so it's best to read them all
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| 11:07 | Then for advanced things, IRC or github issues should be used
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| 11:07 | <unseenhero42> ok ill keep that in mind, thanks for the help
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| 11:07 | <alkisg> np
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| 15:27 | <mnevans> In chrootless ltsp19/20, I am wondering how to mount disk partitions under ltsp in addition to /home. Easiest for me would be to pick up what's in /etc/fstab, but this doesn't seem to happen already. I suspect I need to set this in ltsp.conf, or in ltsp-local.conf settings? Would this be something like:
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| 15:27 | FSTAB_disk2="server:/disk2 /disk2 nfs defaults,nolock 0 0" ?
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| 15:27 | and how insecure is it?
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| 15:29 | <alkisg> mnevans: where are those partitions, on the server or on the clients?
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| 17:53 | <mnevans> Alkis: thanks, sorry for the delayed response - those partitions are on the server.
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| 17:53 | the clients are diskless.
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| 17:56 | Here is another question: how to get the clients to pick up systemwide aliases added to /etc/bash.bashrc? I seem to only have the standard /etc/bash.bashrc. Maybe need ltsp ipxe / ltsp initrd and then reboot the client to have changes in /etc/bash.bashrc be served to the clients?
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| 18:11 | <alkisg> mnevans: changes in / require ltsp image
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| 18:12 | To serve other server dirs, sure, you can use nfs exports on the server, and FSTAB for the clients
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| 18:12 | I.e. /etc/exports.d/local.exports
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| 18:12 | <mnevans> Aha - thanks. On that subject, I am wondering why ltsp image / takes upwards of 40 mins on 48 processors? It used to be very quick on ltsp5. ?
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| 18:14 | <alkisg> mnevans: I don't think there are any significant differences in mksquashfs, so check top, iotop and dmesg to see what's wrong there
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| 18:14 | It works fine here
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| 18:16 | You may co-install ltsp5 and do a direct comparison, and even record the mksquashfs parameters
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| 18:18 | <mnevans> I would prefer to stick with ltsp19! For adding the other mount point , e.g. /disk2, I would put something like
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| 18:18 | FSTAB_disk2="server:/disk2 /disk2 nfs defaults,nolock 0 0"
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| 18:20 | into /etc/exports.d/local.exports then? I thought it goes into ltsp.conf?
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| 18:21 | (I was reading the man pages for ltsp-nfs! :) )
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| 18:31 | ltsp image / running, started 1:30p local time. 48 processors, albeit old slow ones. says it is using 48 processors, but only about 130-170% cpu, 3.8g memory used. Block size = 131072.
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| 18:32 | In the time I wrote that, it got 3% through making the squashfs. This is a lot slower than with ltsp5.
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| 18:36 | <alkisg> Tell me the mksquashfs commands used in ltsp 20 and ltsp 5
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| 18:37 | They should be the same
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| 18:38 | Exporting unrelated nfs dirs is NOT related to ltsp
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| 18:38 | So, man nfs on the server etc
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| 18:43 | <alkisg> I.e. FSTAB takes care of the client part, but the server side nfs exporting part is not managed by ltsp
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| 18:47 | <mnevans> squashfs finished: 16 mins. I exaggerated! But still, longer than with ltsp5. For ltsp 5 I think I used: ltsp-build-client.
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| 18:50 | <mnevans> Clearly I understand so little... :| But appreciate the help.
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| 18:51 | <alkisg> ltsp-build-client creates an image. ltsp-update-image compresses it
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| 18:51 | They are not related
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| 18:52 | How large is the resulting image? ls -lh /srv/ltsp/images
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| 18:53 | If you really have partitions mounted in /disk1, then those are included in the image, making it huge
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| 18:53 | Hmm well no if they're separate mounts...
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| 21:16 | <mnevans> alkisg: image is 12Gb! other partitions are mounted in / : /home, /disk2, /disk3, ... is ltsp expecting or wanting them to be in /media?
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| 21:37 | <alkisg> mnevans: see the first parameter there: https://ltsp.org/man/ltsp.conf/
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| 21:37 | The image excludes are the same in ltsp 20 as in ltsp 5
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| 21:37 | You do need to declare whatever non-standard that you're suing
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| 21:37 | *using
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