Since libnetconf shares some resources (statistics, datastores,...) among all its instances, various locks usage is necessary. During the development, crashes of an application is very usual. And ometimes, such a crash can happen during a critical section in libnetconf. Then, some of the locks used by libnetconf can stay unlocked so a consequent call to a libnetconf function can cause application freeze. To recover from this state, a developer has to manually unlock the locks removing the following files.

/dev/shm/sem.NCDS_FLOCK_*
/var/lib/libnetconf/libnetconf_sessions.bin

Note that before removing the locks manually, all applications using libnetconf should be stopped.