On 2022/10/19 01:38, Theo Buehler wrote: > > The main part I want feedback on is a new patch that silently treats the > > dynamic_shared_memory_type = posix as dynamic_shared_memory_type = shm. > > Since 15beta1, I had an issue where the PostgreSQL server would stop > > working after a week. I traced that issue to OpenBSD deleting the > > shared memory files in /tmp that shm_open(3) creates, since they were > > more than a week old. Possibly this is only an issue on lightly loaded > > servers, but unless daily(8) skips deleting these files automatically, I > > consider the approach the patch uses necessary for reliable operation. > > I think a patch that extends the list before -prune in daily(8) with > './*.shm' would be perfectly acceptable. I'd ok it once it's tested.
Since the decision to put these "files" in /tmp is OpenBSD's (see libc/gen/shm_open.c) it should definitely be handling them automatically in the system scripts. (I'm not entirely convinced /tmp is a great place to store them but I don't really have a better idea. On most Linux they use a separate /dev/shm ramdisk but I don't think adding a new fstab entry for a libc requirement is going to work out for us!)
