Date: Tue, 16 Apr 2013 13:36:42 +0430 From: Tak Tak <tak.official@gmail.com> To: freebsd-questions@freebsd.org Subject: pwd.db/spwd.db file corupption when having unsafe system poweroff Message-ID: <CAHHq%2BVwcazbVXDDsZqH1AXxVOu0mfGjT_5Tcj3OoHJroe8Kgdg@mail.gmail.com>
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hi everyone, i wanna know what exactly happens for freebsd files and processes, when we shutdown system via pressing hardware power key for 3 seconds? here's what has happened to me, recently: i've faced a strange problem.. on one of my bsd servers, one of my coworkers had defined and edited some system users, and then, instead of safe shutdown, he kept pressing power-button for 3 seconds!.. after next startup, we couldn't login anymore! we had to replace pwd.db and spwd.db files, via bootable-freebsd Fixit mode, and then, everything was fine! we know that we are, for sure, better to use safe shutdown, but i can't guarantee it always happens. what if sudden power off makes same problem??so i can't leave my servers in such situations.. My questins are: what has happened exactly? just in-used corrupted files ?? is there any way to prevent this situation? (instead of having a read-only FS.. i can't apply it on this server for now..). i'm sorry if my question seems dummish! i'm trying to increase my bsd knowledge, but i'm just on my way.. for sure, i appreciate any ideas or answers :)
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