On Sat, May 21, 2016 at 08:37:49PM +1000, Ben Woodcroft wrote: > On 21/05/16 17:21, Konrad Hinsen wrote: > > No error message this time. The log is attached. > > From teh log: > > 10526 mkdir("/tmp/guix-directory.2EiFxS/dev/mqueue", 0775) = 0 > > 10526 mount("mqueue", "/tmp/guix-directory.2EiFxS//dev/mqueue", "mqueue", > MS_NOSUID|MS_NODEV|MS_NOEXEC, NULL) = -1 EBUSY (Device or resource busy) > > This then might be the same issue as discussed previously > http://lists.gnu.org/archive/html/help-guix/2016-05/msg00006.html A quick scan through the mqueue man pages suggests mq_notify(3): "mq_notify - register for notification when a message is available [...] EBUSY Another process has already registered to receive notification for this message queue."