IRC chat logs for #ltsp on irc.freenode.net (webchat)


Channel log from 19 February 2016   (all times are UTC)

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05:46alkisg_away is now known as alkisg
05:46
<alkisg>
vagrantc: so is the new pamssh something that should be synced to ubuntu 16.04?
05:46
Is it a bug fix release?
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06:54
<vagrantc>
alkisg_away: if ubuntu only syncs from testing, you shouldn't even have libpam-sshauth
06:54
alkisg_away: i haven't tested it as thoroughly as i would like at this point, so i can't give a strong recommendation
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06:55
<vagrantc>
tested it enough that it should land in debian unstable, but it may just stay there
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07:27alkisg_away is now known as alkisg
07:28
<alkisg>
vagrantc: http://packages.ubuntu.com/search?keywords=libpam-sshauth
07:28
AFAIK, in LTS releases it syncs from testing, while in non-LTS ones it syncs from unstable
07:29
So, if the new version is a bug fix over 0.3.1-1ubuntu1, I think it's reasonable to sync it
07:38
<vagrantc>
hasn't been in testing for over half a year
07:40
alkisg: well, i left it in an unfixed state for many months due to uncertainty about it
07:40
<alkisg>
vagrantc: since ubuntu autosyncs from unstable, there's not much we can do other than send a better "unstable" version
07:41
Maybe it could be a bit more clever and ignore packages that never landed in testing, but it doesn't do that
07:41
<vagrantc>
alkisg: looking at the changelog, it basically fixes the two issues in the ubuntu diff
07:41
maybe slightly different way
07:42
alkisg: so syncing it would result in a virtually identical package, just sync'ed with debian and upstream
07:42
alkisg: so it's no worse than what you have now :)
07:42
<alkisg>
If it's a bug fixing release, it's OK to sync it; otherwise it needs too much bureocracy (feature freeze exception) to bother with it :)
07:43
Cool, I'll check if I'm allowed to sync it
07:43
<vagrantc>
i miean, the patches might have slight variations to fix compiler warnings on top of those patches
07:44
<alkisg>
$ syncpackage -d sid libpam-sshauth --force
07:44
syncpackage: Source libpam-sshauth -> xenial/Proposed: current version 0.3.1-1ubuntu1, new version 0.4.1-1
07:44
Done! :)
07:45* vagrantc is glad to see someone taking care of it
07:45
<alkisg>
Once it reaches the archives, I'll test if we can use it for text mode logins
07:46
<vagrantc>
i was able to get it to work for that in jessie, but in stretch it will require some adjustment
07:46
<alkisg>
Because of systemd/logind etc?
07:46
<vagrantc>
i haven't identified the nature of the problem
07:46
<alkisg>
OK
07:46
<vagrantc>
but those would be likely suspects
07:49
<alkisg>
Whoops
07:49
syncpackage: Error: The signer of this package is lacking the upload rights for the source package, component or package set in question.
07:49
stgraber: could you do the honors and sync it? ^
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07:53
<alkisg>
stgraber: am I allowed to upload any of these packages, and these only? http://people.canonical.com/~ubuntu-archive/packagesets/xenial/edubuntu
07:54
Can we add all the ltsp-related packages to that list?
07:57
!precise-i386
07:57
<ltsp>
precise-i386: Ubuntu 12.04 compressed btrfs chroot to boot really old clients (non-pae, <80MB RAM): http://ts.sch.gr/repo/livecd/images/precise-i386.img. Screenshot: http://ts.sch.gr/repo/livecd/images/precise-i386.png
07:57
<alkisg>
!loopback
07:57
<ltsp>
Error: "loopback" is not a valid command.
07:58
<vagrantc>
wow
07:58* vagrantc really appreciates ubuntu release numbers being meaningful
07:58
<alkisg>
!learn loopback-image as to boot a loopback image with kvm: kvm -kernel /var/lib/tftpboot/ltsp/precise-i386/vmlinuz -initrd /var/lib/tftpboot/ltsp/precise-i386/initrd.img -append "root=/dev/sda" -curses
07:58
<ltsp>
The operation succeeded.
07:59
<alkisg>
Compressed btrfs images are very handy
07:59
They're compressed so they can be used without mksquashfs, and they can be maintained with a simple kvm command
07:59
<vagrantc>
haven't done that by hand in ages
08:00* vagrantc mostly uses virt-manager
08:00
<vagrantc>
ah, nice.
08:00
<alkisg>
That image is not directly bootable, grub doesn't like being installed to an MBR-less device
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08:34
<alkisg>
!nbd-client
08:34
<ltsp>
nbd-client: To try mounting the NBD image from the client initramfs: nbd-client 192.168.67.1 -N /opt/ltsp/i386 /dev/nbd0
08:36
<cyberorg>
alkisg, I am really impressed with your precise image
08:36
thinking of defaulting to that one for thinclients
08:37
<alkisg>
cyberorg: I'm currently improving it a bit and will reupload sonnish :)
08:37
*soonish
08:37
Do you want me to ping you when I'm finished?
08:37
<cyberorg>
works with suse ltsp server with only minor adaptation
08:37
<alkisg>
Cool!
08:38
<cyberorg>
it was just copy of lts.conf and ssh_known_hosts
08:38
and locale change
08:38
thanks for the great work :
08:39
<alkisg>
:)
08:40* alkisg is also installing epoptes-client in there
08:40
<cyberorg>
I saw it working out of the box with suse ltsp server :)
08:40
i mean epoptes-client from precise btrfs image
08:41
<alkisg>
Ah, nice
08:42
<cyberorg>
just working on defaulting suse images to compressed btrfs
08:43
there is huge file size difference though, 5.5G uncompressed, 1.5 squashfs, 3 btrfs zlib, 3.5 btrfs lzo
08:44
<alkisg>
Here I have 750 uncompressed, 400 btrfs, 250 squashfs
08:44
But I keep the btrfs one to 640 to be able to apt-get install things
08:45
<cyberorg>
5.5G uncompressed is a fatclient image
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09:21
<alkisg>
cyberorg: check this file in the image: /usr/share/ltsp/ltsp_config.d/22-light-defaults
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09:21
<alkisg>
You can do distro-specific customizations there
09:21
Btw, I'm going to remove grub to make more space
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10:56
<alkisg>
!root
10:56
<ltsp>
I do not know about 'root', but I do know about these similar topics: 'ltsp-chroot', 'ROOT_PASSWORD_HASH'
10:56
<alkisg>
!ROOT_PASSWORD_HASH
10:56
<ltsp>
ROOT_PASSWORD_HASH: to be able to login as root in vt1, with password "qwer1234", put this in lts.conf: INIT_COMMAND_01="sed 's!^root:[^:]*:!root:$6$p2LdWE6j$PDd1TUzGvvIkj9SE8wbw1gA/MD66tHHlStqi1.qyv860oK47UnKcafSKqGp7cbgZUPlgyPv6giCVyCSCdJt1b0:!' -i /etc/shadow"
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11:21
<Nilton>
hello, I need to create an image for a thin client Schalther LX800, someone help me
11:22
<alkisg>
What's special about this client?
11:23
<Nilton>
I'm using ltsp-server 5.3.7 and Ubuntu 12.04.5 LTS
11:24
<alkisg>
And where are you having trouble?
11:26
<Nilton>
I'm having problems with the kernel, this thin client does not support kelnel father
11:26
<alkisg>
Which kernel do you have in the chroot? ls /opt/ltsp/images/boot/vmlin*
11:27
Sorry, this is the correct one: ls /opt/ltsp/i386/boot/vmlin*
11:28
cyberorg: I uploaded a newer version of the precise-i386.img file, now it's bootable with kvm, it has better defaults, updated programs, blacklisted grub, automatic ssh keys etc
11:28
It also has an embedded README, read it if you like
11:28
:)
11:29
<Nilton>
tentei criar uma imagem com o seguinte comando ltsp-build-client --mirror http://old-releases.ubuntu.com/ubuntu --security-mirror http://old-releases.ubuntu.com/ubuntu --updates-mirror http://old-releases.ubuntu.com/ubuntu --exclude ltsp-client ltsp-client-core --skip-upgrade --dist jaunty --arch i386 e da um erro na instalacao do pacote ltsp-client-core
11:29
I tried to create an image with the following command ltsp-build-client --mirror http://old-releases.ubuntu.com/ubuntu --security-mirror-mirror http://old-releases.ubuntu.com/ubuntu --updates http: // old- releases.ubuntu.com/ubuntu --exclude ltsp-client ltsp-client-core --skip- upgrade --dist jaunty --arch i386 and an error in the installation of the ltsp-client-core package
11:29
<cyberorg>
alkisg, thanks, will check it out soon
11:31
<alkisg>
Nilton: try with 12.04.1, I think its kernel supports LX800. Do you still have the 12.04 chroot?
11:32
<Nilton>
Yes, I have the chroot
11:32
<alkisg>
Run the command to tell me which kernel it has
11:32
ls /opt/ltsp/i386/boot/vmlin*
11:34
<Nilton>
vmlinuz-3.2.0-98-generic-pae
11:34
<alkisg>
It's pae, you need the non-pae version
11:34
Do you know how to install a non-pae kernel in the chroot?
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11:35
<Nilton>
no
11:35
<alkisg>
You need something like:
11:35
sudo ltsp-chroot -m
11:35
apt-get install linux-image-generic
11:36
And then apt-get purge --auto-remove linux-image-generic-pae
11:36
Then exit, ltsp-update-image etc etc
11:36
How much RAM does the client have?
11:37
<Nilton>
ok, I will perform the procedure
11:39
512 if I'm not mistaken
11:58
<alkisg>
What is 512?
11:58
Ah sorry
11:59
OK, do that procedure, and if you can't manage it, you could also use that one instead:
11:59
!precise-i386
11:59
<ltsp>
precise-i386: Ubuntu 12.04 compressed btrfs chroot to boot really old clients (non-pae, <80MB RAM): http://ts.sch.gr/repo/livecd/images/precise-i386.img. Screenshot: http://ts.sch.gr/repo/livecd/images/precise-i386.png
12:00
<Nilton>
512MB memory
12:00
<alkisg>
Yes if you can't manage it, then use the precise-i386 image that I built ^
12:01
<Nilton>
OK thank you
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13:12
<Nilton>
alkisg, worked, thank you very much for your help
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13:58
<alkisg>
Nilton: you're welcome, did you install the non-pae kernel or did you use the image?
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14:19* alkisg is making a newer version of the image, that boots with just 60MB RAM in a VM client... :)
14:20
<highvoltage>
60MB? that's crazy talk :)
14:21
<alkisg>
root@ltsp246:~# free
14:21
total used free shared buffers cached
14:21
Mem: 50708 45468 5240 0 0 8664
14:21
-/+ buffers/cache: 36804 13904
14:21
Swap: 0 0 0
14:21
:)
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15:57
<highvoltage>
alkisg_away: nice :)
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17:13
<bennabiy>
alkisg: what kernel are you using for your btrfs support?
17:15
<alkisg>
bennabiy: the stock one, non-pae, that comes with 12.04.1
17:15
I think it's 3.2.0.98 now
17:15
<bennabiy>
nice.
17:15
How far along has btrfs stability come?
17:16
<alkisg>
I didn't have any issues with that chroot, but of course for the clients it's read-only
17:17
vagrantc: I saw a couple of bug reports of yours where you weren't able to use nbd-server's copyonwrite support. In the (looong) past, I was able to, but currently I tried with a btrfs image and I wasn't able...
17:17
Have you tried it recently? Did it work for you at any time?
17:18
cowdir works, and copyonwrite creates a 0-sized .diff file, but on the client side, it says it's write-protected
17:19
<bennabiy>
interesting
17:19
be right back
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17:25
<vagrantc>
alkisg: haven't tried recently, no
17:25
<alkisg>
ty, it will need debugging then...
17:25
<vagrantc>
alkisg: don't know that i ever had it working out of the box, whatever i was able to work should be in the bug reports
17:26
<alkisg>
I was able to make 64MB clients boot, and I was wondering if I could get it even lower by not using overlayfs on the client, but nbd-server's copyonwrite
17:26
Of course they won't be very usable with such low ram, but it'll make things go smoother on clients with more ram too
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19:01
<alkisg>
cyberorg: I uploaded a 3rd version which lowers the required RAM even more, and fixes some things like the automatic fetching of the ssh keys and epoptes keys etc. I think I'll leave it at that version for some time, so maybe you want that last one. :)
19:01
!precise-i386
19:01
<ltsp>
precise-i386: Ubuntu 12.04 compressed btrfs chroot to boot really old clients (non-pae, >=64MB RAM): http://ts.sch.gr/repo/livecd/images. You can find the image, a screenshot and a README there.
19:03
<alkisg>
If you find that you need an lts.conf, tell me its contents so that I put them in the README file
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21:12
<stgraber>
alkisg_away: that list should be longer but due to the xenial archive being pretty broken right now, the script which generates the list is trying to empty all the packagesets so we've not been running it for a while
21:13
alkisg_away: once the archive has been fixed to be less ridiculous, the DMB will be able to run the script again which should then give you upload right to a bunch more stuff
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