[buildd-tools-devel] Bug#826942: sbuild: buildd-uploader hangs if a stale lockfile is present

[John Paul Adrian Glaubitz]

Source: sbuild
Version: 0.69.0-2
Severity: normal

Hi!

I just ran into a minor annoyance with buildd-uploader after one of our sparc64
buildds crashed. buildd-uploader got stuck consuming lots of CPU time after
being invoked by the cronjob after the machine was recovered after the crash.

Looking into the daemon.log file, there was also no output from the uploader
script to be seen. Since buildd-uploader worked fine for the other instances
of the buildd on the same machine, I assumed it was some issue specific to
this particular buildd user.

Turns out, the lockfile was still there and keeping the buildd-uploader busy.
After deleting the lockfile, the uploader works as expected again:

root at atlantis:~# su - buildd
buildd at atlantis:~$ touch buildd-uploader.lock
buildd at atlantis:~$ /usr/bin/buildd-uploader
^C # stuck here
buildd at atlantis:~$ rm buildd-uploader.lock
buildd at atlantis:~$ /usr/bin/buildd-uploader
buildd at atlantis:~$

I guess buildd-uploader should be modified to check for stale lockfiles and
remove them.

Cheers,
Adrian

--
 .''`.  John Paul Adrian Glaubitz
 : :' :  Debian Developer - glaubitz at debian.org
 `. `'   Freie Universitaet Berlin - glaubitz at physik.fu-berlin.de
   `-    GPG: 62FF 8A75 84E0 2956 9546  0006 7426 3B37 F5B5 F913