SLOG-121 — A file with memory log of a process cannot be deleted
It is possible to perform logging to a memory buffer (in addition to normal log). It is faster than the conventional logging to a file or syslog and the messages are stored in a buffer with fixed size, old messages being rewritten by the new ones. The buffer is made accessible as a file using the technique of memory mapped files. The memory log of each process is stored in a separate file and deleted upon normal process exit. When the process exits with an error, its memory log is retained. This message is logged when the process is about to terminate successfully and its memory log should be deleted, but the corresponding file cannot be deleted for some reason. Repeated occurrences of this message indicate memory log files from successully terminated processes being accumulated on disk.