IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 20 March 2021 (all times are UTC)
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| 16:12 | <shrenik> Hi alkisg
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| 16:12 | Trying to boot RPi4 with Ubuntu Mate 20.04
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| 16:13 | All set. First attempt complained of missing recover4.elf recovery.elf start4.elf start.elf
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| 16:13 | <alkisg> Hi shrenik; this isn't a problem, rpi tries various files until it finds the correct one
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| 16:14 | <shrenik> Found and copied start.elf and start4.elf from /boot on rpi to /var/lib/tftpboot i.e. the tftp root.
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| 16:14 | Next attempt it is just showing the colourful screen of RPi4
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| 16:18 | <shrenik> I missed your message as I got logged out. And they are not in logs.
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| 16:18 | Was trying to share image with you.
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| 16:20 | Okay. Got your msgs. It eventually failed by finding none in tftproot
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| 16:20 | Hence I had to copy manually.
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| 16:20 | <alkisg> shrenik: tftp is at /srv/tftp
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| 16:21 | `ltsp kernel` symlinks them properly
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| 16:21 | <shrenik> I have set it custom to /var/lib/tftpboot
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| 16:21 | <alkisg> Follow https://ltsp.org/docs/installation/raspios/
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| 16:21 | OK
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| 16:21 | <shrenik> I have made appropriate changes in ltsp.conf as well as I pass the param for each ltsp command.
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| 16:23 | Yes I followed the raspios guide. I had a rpi ready with Ubuntu Mate 20.04 so I just created a chroot image of the same.
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| 16:23 | <alkisg> OK, what is the problem that you're seeing?
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| 16:24 | <shrenik> The only files copied over into /var/lib/tftpboot/ltsp/raspimssos/ are vmlinuz and initrd.img
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| 16:24 | Now just the multicolour screen on rpi
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| 16:24 | <alkisg> What's the output of `ls -l /srv/tftp` ?
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| 16:24 | And of `ls -l /var/lib/tftpboot`, both of them
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| 16:24 | Put them to pastebin
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| 16:25 | <shrenik> Server logs say that it did get the start.elf and start4.elf
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| 16:25 | On server /srv/ltsp is empty
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| 16:31 | <shrenik> https://pastebin.com/hQAwj07B
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| 16:32 | Sorry for the slow responses. Am on phone.
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| 16:39 | <shrenik> I am checking again if I may have missed some crucial step
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| 16:46 | <shrenik> So I did not do the very initial steps since I was using a pre-installed Ubuntu Mate.
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| 16:46 | mount -o ro /dev/loop8p1 /mnt
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| 16:46 | cp -a /mnt/. /srv/ltsp/raspios/boot/
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| 16:49 | <shrenik> In ltsp.conf, set RPI_IMAGE to the chroot name. This will be used by ltsp kernel to generate the appropriate symlinks from /srv/tftp/* to /srv/ltsp/raspios/boot/*.
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| 16:49 | But ltsp kernel does not try to create any such symlinks
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| 17:04 | <shrenik> alkisg : okay, I see the code and where I messed up
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| 17:04 | <alkisg> shrenik: nice
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| 17:05 | <shrenik> Wondering why rpi_image function was not invoked.
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| 17:05 | Got that too. :)
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| 17:08 | alkisg : is /dev/loop8p1 /boot or /boot/firmware?
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| 17:09 | <alkisg> shrenik: on the server or on the client?
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| 17:09 | <shrenik> When you are doing this on the rpi*.img
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| 17:10 | [10:16:47 pm] <shrenik> mount -o ro /dev/loop8p1 /mnt
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| 17:10 | [10:16:47 pm] <shrenik> cp -a /mnt/. /srv/ltsp/raspios/boot/
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| 17:11 | Are you copying all contents of /boot from the image onto the destination base directory?
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| 17:11 | <alkisg> From the image boot partition, which is partition 1, to the inside of boot/ in srv
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| 17:12 | <shrenik> Great. Thanks.
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| 17:12 | <alkisg> The first boot partition of rpi images, is mounted in the sd card /boot
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| 17:12 | So I'm just putting them in the correct folder
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| 17:19 | <shrenik> I have bootcode.bin within firmware directory
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| 17:20 | That is under /boot/firmware/ . Hence the rpi_image function never gets called.
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| 17:33 | <shrenik> alkisg: now this after having symlinks created and attempting the boot https://photos.app.goo.gl/FEUbaed9Cj3W1EBVA
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| 17:39 | <alkisg> shrenik: it's possible that ubuntu-mate is using a different firmware organization; I haven't tested with it. I would suggest that you make things up and running with my exact steps first, and then try to experiment with different distros etc
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| 17:40 | Raspberry netbooting isn't an exact science, they have a lot of loopholes there, and I've no time to support all rpi distros; one is more than enough :D
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| 17:40 | <shrenik> I have two cmdline.txt . One in boot and another in /boot/firmware . So I got my second mess up.
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| 17:41 | <alkisg> The proper way forward would be for them to support pxe properly, not various silly custom protocols :)
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| 17:53 | <shrenik> Copied over the cmdline.txt that we create. Yet same messages. Will continue tomorrow. :) Thanks.
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| 17:53 | <alkisg> np
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