On Fri, Oct 3, 2014 at 10:22 PM, Joseph <[email protected]> wrote: > I'm getting an error message during emerge: > * configure has detected that the sem_open function is broken. > * Please ensure that /dev/shm is mounted as a tmpfs with mode 1777. > * ERROR: dev-lang/python-3.3.5-r1::gentoo failed (configure phase): > > my /dev/shm is mounted as drwxr-xr-x 17 root root 4020 Oct 3 08:57 > shm > > and it should be: > drwxrwxrwt 2 root root 100 Sep 29 09:25 shm > > I've already change in fstab: > from: > shm /dev/shm devtmpfs nodev,nosuid,noexec > 0 0 > > to: > shm /dev/shm tmpfs > defaults,nodev,nosuid,mode=1777 0 0 > > Is it OK to run: > umount shm > mount shm > > This is a remount system, so I want to make sure I'm not making a mistake. >
Yes, that should be fairly safe to run. The only risk is if you have some application running which has files open on it; but umount should give you an error in that case. Also, you can/should remove that fstab entry entirely once you have remounted it; both openrc and systemd will automatically mount /dev/shm with proper permissions if it is missing from fstab.
