When shutting down several DBs for scheduled server maintenance/backup every night, sometimes the fb_smp_server crashes and the log reports "Fatal lock manager error: invalid lock id (0), errno: 0" (it seems similar to
). Then the guardian seems unable to restart the server process for several times, it attempts to open a wrong named file (see attached firebird.log).
I can't tell if there are open connections to the DBs being shut down, but it seems the -force timeout (300 in my case) has not been reached, although the shutdown process takes one or two minutes when the problem occurs, vs just one or two seconds in normal situations.
This problems never occurred with FB 2.5.1.