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- Newsgroups: comp.sys.hp
- Path: sparky!uunet!europa.asd.contel.com!darwin.sura.net!Sirius.dfn.de!tubsibr!ws.rz.tu-bs.de!c0033013
- From: c0033013@ws.rz.tu-bs.de (Axel Brandes)
- Subject: thanks, ist's ok (was: Strange problems with /bin/ksh as login shell)
- In-Reply-To: c0033013@ws.rz.tu-bs.de's message of Wed, 9 Sep 1992 15: 13:32 GMT
- Message-ID: <C0033013.92Sep11125810@rznb18.rz.tu-bs.de>
- Sender: postnntp@ibr.cs.tu-bs.de (nntp inews entry)
- Organization: TU Braunschweig, Computer Centre (NAP), Germany.
- References: <C0033013.92Sep9161332@rznb18.rz.tu-bs.de>
- Distribution: comp
- Date: Fri, 11 Sep 1992 11:58:10 GMT
- Lines: 42
-
- Hi!
-
- Many thanks to all the guys who tried to help us. I'll give a summary
- of the problem, its causes and the solution:
-
- (1) The Korn Shell - embedded in HP-UX - is the only shell which locks
- the history file (unlike the HP-UX Bourne and C Shell)
-
- (2) The statd (usr/etc/rpc.statd) can die or refuse proper working
- under some circumstances. In this case - which we have been
- enjoying :-) - the lockd (/usr/etc/rpc.lockd) becomes 'sick', too.
- The next stage is, that NFS does not work correctly (-> unkillable
- processes)
-
- (3) Coming up from the Korn Shell feature to lock the user's history
- file (residing on a NFS mounted file system) the *whole* system
- can become instable more and more ...
-
- How do one realize the problem?
-
- - User with NFS mounted history files (in most cases the history file
- resides in the user's home directory - so you can say: NFS mounted
- home directories) are not able to use the Korn Shell. If this is
- their login shell, they even can't login.
-
- - A process running a Korn Shell in the above context is not killable.
- But you can reboot ...
-
- - If the system is instable enough one w not be able to fork more
- processes nor to make pipes - due to NFS problems, based on statd
- problems.
-
- Workarounds, solutions:
-
- - Make sure statd and lockd work properly: kill them and restart them
-
- - HP offers patches for the statd, you'll get with them new version of
- /usr/rtc/rpc.statd.
- --
- *=============================================================================*
- Axel Brandes, RZ TU Braunschweig email c0033013@ws.rz.tu-bs.de
- D-3300 Braunschweig, Germany phone 0531-391-5538 (voice)
-