IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 24 March 2012 (all times are UTC)
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| 06:29 | <tessier> hello all! I have an LTSP Term 1720 with a 4G CF card in it that I want to reinstall the OS on. But I can't seem to get it to go into BIOS to boot from a USB CDROM. What is the usual way to enter BIOS from a cold boot?
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| 06:46 | <alkisg> vagrantc: hello, in ltsp-build-client/095-update-image Ubuntu has this: chroot $ROOT /etc/kernel/postinst.d/ltsp-update-kernels
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| 06:46 | ...and Debian doesn't, do you do it in ltsp-client postinst?
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| 06:47 | <vagrantc> alkisg: don't see any reason to
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| 06:47 | <alkisg> For the vmlinuz symlinks etc to be generated
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| 06:47 | <vagrantc> happens as part of the kernel package postinst
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| 06:48 | <alkisg> On a vbox client, if I install ltsp-client, the postinst isn't triggered
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| 06:48 | <vagrantc> after the fact, yeah, i suppose not.
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| 06:48 | you've already got the kernel installed.
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| 06:49 | <alkisg> I think that's the case for ltsp-build-client too, the kernel would be installed before ltsp-client, right?
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| 06:49 | <vagrantc> the ltsp-client should (directly or indirectly) regenerate the initramfs at least
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| 06:49 | <alkisg> I want to move it to ltsp-client postinst, do you happen to know how to trigger a kernel postinst (like grub does it) without manually calling it?
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| 06:49 | <vagrantc> alkisg: no, the kernel is installed in the finalization phase on Debian, and ltsp-client-* is installed in an earlier phase.
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| 06:50 | alkisg: dunno.
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| 06:50 | <alkisg> Ah, debootstrap doesn't install a kernel?!
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| 06:50 | <vagrantc> not in the least
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| 06:50 | <alkisg> Thanks.. hm...
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| 06:52 | ...I wonder why the initramfs contained the ltsp code then, but the vmlinuz symlinks weren't there
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| 06:52 | <vagrantc> the symlinks have been deprecated on Debian... so it would be good if our code didn't depend on them.
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| 06:52 | alkisg: probably there are initaramfs-tools triggers that happen when files are added/removed from relevent dirs.
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| 06:53 | <alkisg> Ah, just initramfs, not actual kernel postinst trigger, got it
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| 06:53 | * vagrantc vagrantc -> pumpkin | |
| 06:53 | <alkisg> 'night vagrantc
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| 06:54 | * vagrantc wonders why ltsp and epoptes haven't hit sid yet ... | |
| 06:54 | <vagrantc> hrm.
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| 06:54 | <alkisg> I'll make a shell function for kernel sorting, but I'm worried that it's a big change to put in precise
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| 06:54 | * vagrantc postpones really wondering till tomorrow | |
| 06:54 | <alkisg> :)
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| 07:03 | <alkisg> Heh. I wonder why this hasn't given us trouble yet: server/plugins/functions, function detect_latest_kernel() :
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| 07:03 | kernelversion="`ls -d $ROOT/lib/modules/2* | sort -nr | head -n1 | xargs basename`"
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| 07:03 | ....we're in kernel 3 now, not 2....
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| 07:06 | Ah, because only k12linux uses that function :)
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| 07:30 | knipwim: how are the kernels named in gentoo? e.g. linux-image-3.2.0-20-generic-pae ?
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| 07:31 | Errr sorry, I meant vmlinuz-3.2.0-20-generic-pae
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| 07:31 | The file name, not the package name
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| 07:47 | <knipwim> alkisg: the default gentoo kernel builder produces kernel names like: kernel-genkernel-x86-3.0.6-gentoo
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| 07:47 | or kernel-genkernel-x86-2.6.34-gentoo-r12
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| 07:48 | <alkisg> knipwim: nd the amd64 ones?
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| 07:48 | *and
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| 07:48 | <knipwim> x86 -> amd64 i think
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| 07:49 | <alkisg> knipwim: thanks, I'm trying to implement a generic kernel sorting function.... that x86 in front makes it harder though, all amd64 kernels would come before x86 ones.... /me thinks more... :-/
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| 07:50 | <knipwim> hmm, distro specific function ?
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| 07:50 | <alkisg> knipwim: I'll use sort -V
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| 07:51 | That works for debian + ubuntu, and you can override it to bypass the x86 first
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| 07:51 | (maybe by using the "key" sort parameter)
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| 07:52 | I think sort -V works on fedora too, no idea how opensuse names its kernels though
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| 08:01 | get_sorted_kernels() {
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| 08:01 | ls /boot/vmlinuz-* | sort -rV
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| 08:01 | }
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| 08:02 | That would be the generic one, and you can override it for Gentoo
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| 08:02 | <knipwim> that would work: ls /boot/kernel-genkernel-x86-* | sort -rV
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| 08:03 | <alkisg> But it wouldn't bring the amd64 kernels, right?
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| 08:03 | <knipwim> ehm, perhaps an arch check would be in order
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| 08:03 | <alkisg> You could even just put ls /boot/kernel-* | sort -rV, and just have the x86 listed after the amd64 ones, no big deal
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| 08:04 | It's not guaranteed that the user would prefer the most recent kernel over some arch anyway...
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| 08:05 | And it's a corner case, the user can set it own default (for pxelinux menus) manually in that case
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| 08:05 | <knipwim> i never use the update kernels
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| 08:06 | <alkisg> That's for a new functionality, I want to implement graphical+automatic pxelinux menus
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| 08:06 | <knipwim> but build one x86 chroot, for an atom kernel, pentium 3, efficeon, via c7
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| 08:06 | <alkisg> Something like that: http://alkisg.mysch.gr/steki/index.php?action=dlattach;topic=2828.0;attach=1672;image
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| 08:08 | highvoltage: would you be interested in creating an LTSP pxelinux theme similar to the above one? ^
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| 08:09 | I.e. background + font colors, I have the code for that ^ one
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| 08:13 | * knipwim removed 010-chroot-tagging | |
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| 08:40 | <alkisg> Scripts that still use /etc/ltsp_chroot are ltsp-bind-mounts, which maybe could be completely removed if noone's still using it, and the ALTLinux/K12Linux ones, which I don't know when they'll be updated... :)
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| 08:41 | <knipwim> i was wondering about the ltsp-bind-mounts
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| 08:41 | who used it, because gentoo ships a similar one
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| 08:43 | <alkisg> I think vagrantc was using that, but since he's switched to NFS+aufs, I'm not sure if he's even tested it with recent trunk
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| 08:43 | knipwim, are you still supporting bind-mounts?
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| 08:43 | <knipwim> yeah :/
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| 08:44 | <alkisg> Why? Any advantages over aufs?
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| 08:44 | <knipwim> couldn't get aufs to work
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| 08:44 | <alkisg> Ah :(
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| 08:44 | You could run aufs from init-ltsp.d too
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| 08:44 | And just use it for certain directories, like /etc
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| 08:44 | <knipwim> hmm
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| 08:44 | that might be an option
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| 08:45 | it's still on my todo list
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| 08:45 | <alkisg> I think that it would even be possible to use it for /, but you'd need to ask the aufs folks for the exact how-to
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| 08:45 | <knipwim> my first goal was to get nbd boot working
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| 08:46 | <alkisg> Maybe create a tmpfs /somewhere, bind-mount root to /somewhere-else, merge them with aufs to /a-different-place, and finally mount --move /a-different-place to /
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| 08:46 | <knipwim> i could get it to work manually, using a port based export from the commandline
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| 08:48 | <alkisg> NFS with aufs would be a good start, and nbd would then only be a few lines away...
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| 08:51 | <knipwim> i was thinking to implement the detect_arch in common
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| 08:51 | and put ltsp-common-functions-gentoo in the trunk root as well
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| 20:07 | <vagrantc> shogunx: you're using HP t5325 thin clients in production? what OS?
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| 20:07 | shogunx: or was that just an experiment?
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| 20:39 | <shogunx> vagrantc i have one running on my lab bench. it seems to work pretty well. i have not sold a system since i started playing with it, but i would consider it a viable option to the geode based devices i am using now.
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| 20:39 | better, actually, due to lower power draw, and better graphic performance.
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| 20:40 | debian on the server, and your debian ltsp image on the client.
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| 20:41 | all in all, i like the move to ARM and i think that is one of the best paths forward for my particular application, given the power restraints i work with.
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| 20:43 | honestly, i would also like to have a server comprised of 32 low clock speed (1ghz or so) arm processors for a ltsp type workload
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| 20:44 | <shogunx> keep a couple running for os processes, and quiesce the others when not in use.
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| 20:51 | <vagrantc> shogunx: cool.
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| 20:52 | shogunx: it hasn't received much love in debian-installer, but i think the kernel is still supported.
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| 20:54 | <shogunx> would not be the first time i had to build an os up from scratch...
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| 20:56 | <vagrantc> in fact, what little support was there in debian-installer was just removed.
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| 20:57 | <shogunx> for arm?
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| 20:57 | or for the ltsp-arm image?
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| 20:58 | <vagrantc> for the hp t5325 specifically
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| 20:59 | <shogunx> bogus. your original notes still work, yes?
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| 20:59 | <vagrantc> armel support is pretty solid in Debian :) and armhf is getting there.
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| 20:59 | shogunx: i haven't tried recently, but i don't have any reason to believe they wouldn't
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| 20:59 | <alkisg> stgraber, vagrantc, can I go ahead and remove all the symlinks from init-ltsp.d and change the initramfs paths to refer to init-ltsp.d instead of /common?
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| 21:00 | <shogunx> i'm confused... what was in debian-installer for us?
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| 21:00 | <vagrantc> alkisg: i'd like to test it.
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| 21:01 | <alkisg> You mean if debian/install allows that? I can do a quick test with the epoptes dir...
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| 21:01 | * alkisg tries | |
| 21:01 | <vagrantc> shogunx: tbm was working on support for installing directly to the hp t5325's flash drive in debian-installer, but never finished it, and recently removed it.
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| 21:01 | <shogunx> how far along was it?
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| 21:02 | <vagrantc> shogunx: but that shouldn't be needed for using them as a thin client, just the kernel support really, since the armel arch is working
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| 21:02 | shogunx: dunno.
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| 21:02 | <shogunx> i agree with your assessment as to thin client use.
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| 21:03 | i was considering if it was something worth finishing, when asking about how far he got.
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| 21:03 | <vagrantc> shogunx: heard anything about HP's new arm-based thin clients? i haven't been able to dig anything up.
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| 21:03 | just heard that the t5325 was discontinued and there was some new model they were hocking.
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| 21:03 | <shogunx> i have not, but i will probe around.
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| 21:04 | i still think raspberry pi b model will make a great client.
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| 21:04 | small enough to hack into the back of a monitor.
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| 21:06 | <alkisg> vagrantc: it worked fine
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| 21:07 | <shogunx> oh my. the t5325 has gotten cheap too.
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| 21:07 | i should stock up.
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| 21:07 | <vagrantc> shogunx: direct from HP, or elsewhere?
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| 21:13 | <shogunx> all over the place
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| 21:15 | <vagrantc> shogunx: were you using the vesa driver, or some other driver?
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| 21:20 | <shogunx> not sure. i can look, but i will need to do so after i get back from my little ones birthday party.
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| 21:21 | seems as tho it was better resolution than vesa tho
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| 22:26 | <bara> is it possible to add users to extra groups they arn't in on the server?
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| 22:35 | <vagrantc> probably with pam modules, such as pam_group
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