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


Channel log from 26 January 2016   (all times are UTC)

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07:29
<highvoltage>
alkisg: hey, do you get edubuntu build failure notifications?
07:32
<alkisg>
Hi highvoltage
07:32
No
07:33
Btw, our edubuntu membership has expired, right?
07:36
<highvoltage>
alkisg: nope: https://launchpad.net/~edubuntu-members
07:36
alkisg: for a while it's been failing on:
07:36
Adding group `epoptes' (GID 128) ...
07:36
Done.
07:36
sem_open: Function not implemented
07:36
dpkg: error processing package epoptes (--configure): subprocess installed post-installation script returned error exit status 1
07:36
<alkisg>
highvoltage: https://launchpad.net/~edubuntu-council ==> 0 active members
07:37
<highvoltage>
not sure if that's directly an epoptes problem or not
07:37
yes, we expired from edubuntu-council, but we're still on edubuntu-members
07:37
<alkisg>
Let me send a build to the epoptes ppa, it hasn't failed there whenver we tried it
07:38
It might be a problem in the faketime package
07:38
Although the PPA builds are fine with it
07:40* alkisg is reading https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=778462
07:40
<alkisg>
"Control: retitle -1 faketime: does not work in chroot if /run/shm is not mounted as tmpfs inside the chroot ("sem_open: Function not implemented")"
07:43* alkisg requested a build, https://code.launchpad.net/~epoptes/+recipe/epoptes-proposed
07:43
<highvoltage>
alkisg: yeah the package built just fine, but it's the actual edubuntu iso build that fails when installing the package
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07:44
<alkisg>
Sorry, pidgin crashed in 16.04
07:45
So the situation looks like this: epoptes.postinst calls faketime in order to fool openssl to generate a certificate valid since the Epoch
07:45
It does that because some clients have an expired cmos battery, resulting in dates e.g. of 2000
07:46
Those clients are not controllable by epoptes if we don't use faketime that way
07:46
This works fine in real systems, no problem there
07:46
So I can either add a check in epoptes.postinst in order to not do that for the case of the edubuntu live cd,
07:47
or the edubuntu chroot there can bind-mount /dev/shm for faketime to work
07:47
I'd really recommend the latter
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07:53
<highvoltage>
alkisg: the latter will probably be a lot more difficult, my suspicioun would be that /dev/shm is not available in the protected build environment on launchpad's build infrastructure
07:55
<alkisg>
highvoltage: how can I get a test environment to ensure that what I will do fixes the issue?
07:56
E.g. in ltsp chroots that issue doesn't happen
07:56
Should I suppose that /dev is not mounted at all?
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07:58
<alkisg>
*assume
08:01
<highvoltage>
alkisg: I'm not 100% sure but you might need a whole launchpad infrastructure to test reliably locally. I suppose a package update and then checking with the next daily build should be simple and efficient enough? might also be a question for #ubuntu-devel or on some launchpad channel
08:03
<alkisg>
highvoltage: how can I get access to the build failure logs?
08:04
Or, can you send me the link for one of them?
08:06
<highvoltage>
alkisg: yes, can do
08:07
<alkisg>
This is a sample command that epoptes will run on postinst:
08:07
faketime '1970-01-01 00:00:00 UTC' openssl req -batch -x509 -nodes -newkey rsa:1024 -days $(($(date --utc +%s) / 86400 + 3652)) -keyout /tmp/epoptes.key -out /tmp/epoptes.crt
08:08
<highvoltage>
alkisg: can I forward it to you by email?
08:08
<alkisg>
Sure, or PM here for the link
08:08
I just need something to tell to the folks at #launchpad
08:09
I.e. "epoptes fails when I ran that ^ command on the XXXX build environment, with this output:..."
08:12
I also tried on a plain chroot, I can't reproduce it so i wouldn't know what to check for, to bypass the launchpad build environment failures
08:12
The recipe build was fine
08:12
https://code.launchpad.net/~epoptes/+recipe/epoptes-proposed
08:13
I.e. faketime on Xenial doesn't throw an error when /dev/shm is not accessible
08:16
<highvoltage>
alkisg: sorry, had some thunderbird issue forwarding the whole uncompressed log, I gzipped it and sent it to your gmail address
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09:09
<alkisg>
highvoltage: how is the build process named, what should I tell people at #launchpad about it? Is it "the edubuntu livecd build process"?
09:09
Is that related to #launchpad?
09:10
<highvoltage>
alkisg: yes
09:10
alkisg: there are build logs online somewhere... I just don't have a link to it and it doesn't seem easy to find
09:11
(I'm also somewhat distracted by work today, will check again in a min)
09:12
<alkisg>
Thanks
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14:45
<eddytv>
alkisg: still having trouble getting the audio output unmuted-on-boot on my LTSP clients. The command I run from the shell to fix the issue is: "amixer cset name='IEC958 Playback Switch' on"
14:45
Is there some way to incorporate that into lts.conf?
14:55
<alkisg>
# eg. if the channel is named 'Mic Boost (+20dB)'
14:55
# then the variable is simply MIC_BOOST_SWITCH
14:55
#
14:55
# Oh, and SWITCH is used for on/off switches - value
14:55
# should be on or off, and VOLUME is used for volumes
14:56
I.e. try with PLAYBACK_SWITCH=on
14:56
Also note that you can put RCFILE_01="amixer cset ..." there
14:57
And avoid all the naming stuff, just run the command at the rc.local stage with RCFILE_01=xxx
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15:30
<eddytv>
Thanks, as always. Will give that a try when I get home.
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