[Qa-jenkins-dev] semaphores

[Holger Levsen]

Hi,

[16:51] <      h01ger> | lamby: can you explain "Something interesting in the Jenkins setup where we can't use semaphores."?
[16:56] < lamby> That's all I know. 
[16:56] < lamby> Builds only fail on jenkins, something to do with semaphores… really, that's it.
[17:10]              * | h01ger doesnt really know what semaphores are
[17:14] < danielsh> A generalization of mutexes; see sem_overview(7)
[17:15] < lamby> Grep BINDMOUNTS="/dev/shm" in jenkins.debian.net too
[17:15] < lamby> Clearly some workaround is not working
[17:17] < lamby> Might just need "none /dev/shm tmpfs rw,nosuid,nodev,noexec 0 0" in fstab of all the nodes.
[17:18] <      h01ger> | mapreri: ^^ (for your pbuilder hat)
[17:19] < lamby> I don't think it's a pbuilder issue.
[17:20] < lamby> pbuilder appears to be correctly bindmounting /dev/shm. It's the underlying /dev/shm that is wonky.
[17:20] < lamby> Hence "in fstab of all the nodes".
[17:20] < lamby> Hope that helps anyway :)

someone should fix update_jdn.sh to check for this line in /etc/fstab
and add it if its not there…

mailing the list as a reminder to do so. please beat me to it! ;)


-- 
cheers,
	Holger
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