IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 4 April 2021 (all times are UTC)
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| 05:29 | <keats> Hey there
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| 05:29 | has anybody tried solus as an ltsp client image?
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| 05:30 | I'm having this issue w/ solus where it just says "Failed to start switch root"
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| 05:32 | any ideas?
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| 05:39 | all right then i'm just going to wait it out because i am at my wit's end
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| 05:52 | okay so there's no /dev/nfs... i might need to install nfs on this particular distro first. sorry my bad
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| 06:01 | nope....
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| 06:01 | lubuntu does not have /dev/nfs when it boots either... so this must be something that's available while the system is booting
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| 06:02 | alkisg: sorry to ping you but could you please give me any pointers regarding the matter please... i am at my wit's end, again.
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| 06:04 | <alkisg> Morning all
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| 06:05 | Reading...
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| 06:05 | keats: do you have a VM client that I could watch over VNC?
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| 06:05 | <keats> Hmmm..... yes sir. just a moment please
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| 06:06 | <alkisg> Package manager: eopkg
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| 06:06 | Ah it's not based on Debian?
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| 06:06 | !vnc-dide
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| 06:06 | <ltspbot`> vnc-dide: To share your screen with me, run this: sudo apt-get --yes install x11vnc; x11vnc -connect srv1-dide.ioa.sch.gr - this is a reverse connection, it doesn't need port forwarding etc.
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| 06:06 | <keats> no sir
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| 06:06 | vm is booting up
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| 06:07 | <alkisg> keats: new distributions, not based on debian, would need a couple of hours at least for porting ltsp to them
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| 06:07 | <keats> systemctl status initrd-switch-root.service says "specified switch root path '/sysroot' does not seem to be an OS tree.
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| 06:07 | <alkisg> I.e. even if we get past that point, we'll find a few more that would need to be resolved before production use
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| 06:08 | <keats> hmmm.... i've been having issues with this one laptop that has ati radeon graphics card (integrated) and it doesn't boot to gui (but only shows mouse cursor - which i can move)
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| 06:08 | and solus seemed to boot via usb just fine
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| 06:08 | <alkisg> That's just kernel/xorg
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| 06:08 | It's not related to distributions, usually
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| 06:08 | <keats> whereas debian and elementary acted strange
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| 06:08 | hmmm
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| 06:09 | <alkisg> Just see which kernel/xorg driver it's using, and select a debian based distro with the same combination
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| 06:09 | <keats> .... and i couldn't find any workaround for that issue
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| 06:09 | hmmmm
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| 06:09 | how would i check which driver it is using?
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| 06:09 | <alkisg> lspci -nn -k | grep -A3 VGA
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| 06:09 | And uname -a
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| 06:09 | What's the output of these?
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| 06:09 | <keats> also, i kinda' found a bug-ish thingy....
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| 06:10 | it appears that the server's time is used as the UTC by the clients. so my GMT+X server boots up clients that are (GMT+X)+X in time
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| 06:10 | <alkisg> That's just a distribution tiny misconfiguration, easily solvable
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| 06:11 | <keats> i'll have to configure the client images to use UTC?
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| 06:11 | <alkisg> No, use the same timezone everywhere
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| 06:11 | Which distribution are you talking about now, still solus?
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| 06:11 | <keats> i'm using the same timezone in my clients and the server o.O
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| 06:11 | no sir... the usual ones: lubuntu and friends
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| 06:11 | (debian derivatives)
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| 06:12 | <alkisg> cat /etc/timezone
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| 06:12 | On the server vs on the clients
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| 06:12 | <keats> just a moment please
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| 06:12 | <alkisg> You may also vnc to me if you like, like I wrote above
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| 06:12 | <keats> it's the same on both
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| 06:13 | the server is running trisquel gnu/linux
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| 06:13 | the client is lubuntu
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| 06:13 | both are set to the same time zone
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| 06:13 | <alkisg> timedatectl status | nc termbin.com 9999
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| 06:13 | <keats> the ltsp computers aren't connected to the internet. i'm on a different machine
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| 06:13 | <alkisg> Paste the output of that, from the server and the clients
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| 06:13 | Maybe then they're just not synchronized
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| 06:14 | And you need to set up a local NTP server
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| 06:14 | <keats> ah... because they're not connected to the internet
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| 06:14 | that makes much sense
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| 06:15 | <alkisg> Also if you ever boot windows in them, they're not using utc, so they skew the clock
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| 06:15 | <keats> but i can confirm that the client thinks that the server's local time is the universal time
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| 06:15 | timedatectl status on the client shows that
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| 06:15 | we can use windows as a client in ltsp!????
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| 06:15 | <alkisg> No I meant if you had local windows in your clients
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| 06:15 | And you booted windows while they were connected to the internet,
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| 06:15 | <keats> ah... i see.... I see.
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| 06:15 | <alkisg> then it would sync the clock to non-utc time. Then, when you'd boot into linux, you'd see the UTC+X+X effect you mentioned
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| 06:16 | <keats> i see that makes sense
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| 06:16 | <alkisg> So IF these clients were booted into windows the last time they were connected in the internet, it would explain everything
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| 06:16 | <keats> let me check the actual diskless ones to see if they exhibit the same issue
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| 06:16 | <alkisg> Just set the correct time and reboot
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| 06:16 | If it keeps the correct time, it's fine
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| 06:17 | <keats> another question (i haven't had the time to experiment myself): what kind of changes can the clients make that will persist. I know that /home persists... and normal settings (and time would be one, I presume)
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| 06:18 | <alkisg> Home persists because it's SSHFS (by default), while clock is written in CMOS (BIOS memory)
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| 06:18 | Nothing else persists
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| 06:18 | <keats> i see
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| 06:20 | just checked the diskless client and it has a different date. so yes. what you just said makes sense. I should probably just run a local network time server then. i shall look into it
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| 06:21 | <alkisg> Apt install ntpd in the ltsp server should do it
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| 06:22 | <keats> I see.
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| 06:22 | Thank you very much
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| 06:22 | <alkisg> You're welcome
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| 11:13 | <keats> okay this is strange, again...
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| 11:13 | xubuntu groovy gorilla...
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| 11:13 | the image does not boot to the client
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| 11:14 | the error? rsync: [generator/receiver] failed to set permissios on "/usr/share/ltsp/client"
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| 11:14 | ah wait
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| 11:14 | my mistake
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| 11:14 | i need to fix that
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| 11:14 | i'm an idiot
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| 11:14 | sorry
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| 11:43 | <alkisg> keats: ubuntu 20.10 has a bug in rsync
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| 11:43 | Better use 20.04
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| 11:43 | !rsync
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| 11:43 | <ltspbot`> Error: "rsync" is not a valid command.
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| 11:43 | <keats> alkisg: I am going to die
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| 11:44 | <alkisg> We all are :D
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| 11:44 | <keats> seriously? I've got EVERYTHING setup in 20.10!!!!!
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| 11:44 | <alkisg> Hopefully, 100 years later...
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| 11:44 | Well, you can work around it by changing one line in ltsp
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| 11:44 | <keats> please teach me sensei!
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| 11:44 | but there are 3 other images too
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| 11:44 | so it has to be backwards compatible
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| 11:45 | <alkisg> cd /usr/share/ltsp
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| 11:45 | grep -rw rsync
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| 11:45 | <keats> in the server i presume
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| 11:45 | <alkisg> Where you see "re rsync", change it to "rw rsync"
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| 11:45 | Yes. Then, run ltsp initrd.
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| 11:45 | <keats> this does not affect the others right?
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| 11:45 | doing it
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| 11:45 | <alkisg> In this file only: ltsp/client/initrd-bottom/55-initrd-bottom.sh
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| 11:46 | It won't have bad side effects, no
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| 11:47 | <keats> hmmmmmm
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| 11:48 | there isn't a "re rsync" in that file but only a re chroot "$rootmnt" rsync
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| 11:48 | o.O
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| 11:51 | <alkisg> Change re to rw there too
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| 11:51 | <keats> only there, right
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| 11:51 | <alkisg> (that's the one, yeah)
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| 11:51 | 2 instances, right?
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| 11:51 | <keats> line 65 and 66
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| 11:51 | yes
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| 11:51 | wait...
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| 11:51 | no
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| 11:52 | i was looking at client/init/25-ro-root.sh
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| 11:52 | <alkisg> ltsp/client/initrd-bottom/55-initrd-bottom.sh: re chroot "$rootmnt" rsync -a --delete /tmp/ /usr/share/ltsp
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| 11:52 | ltsp/client/initrd-bottom/55-initrd-bottom.sh: re chroot "$rootmnt" rsync -a --delete /tmp/ /etc/ltsp
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| 11:52 | Change these re to rw
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| 11:52 | <keats> yes those. okay. i will. thank you
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| 12:19 | alkisg: thank you. it kinda' does work now. although... i should probably try to look into proprietary drivers for that radeon ati thingy
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| 12:20 | ... which sucks
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| 12:20 | anyways, is there a way to make a certain client boot a particular image directly without showing them ipxe menu?
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