Thread

Re: server auto-restarts and ipcs

Oliver Elphick <olly@lfix.co.uk> — 2004-11-09T16:54:59Z

On Tue, 2004-11-09 at 07:00 -0700, Ed L. wrote:
> On Tuesday November 9 2004 2:16, Oliver Elphick wrote:
> > On Mon, 2004-11-08 at 17:47 -0700, Ed L. wrote:
> > > I often wonder why ipcs never seems to show the shared memory
> > > block in question?
> >
> > The permissions of the shared memory block and the semaphore arrays are
> > 600.  ipcs seems not to report objects which you cannot access.  Run
> > ipcs as root and you should see the PostgreQSL shared memory segment and
> > semaphores.
> 
> I don't see them when running ipcs as root, either.  Not sure that would 
> make sense given the shared memory is created as the same user running 
> ipcs...

If neither root nor their creator can see them, I assume they don't
exist.  Certainly, with Linux 2.6 and util-linux 2.12, ipcs sees the
postgres objects whether it is run by root or by the postgres user.

-- 
Oliver Elphick                                          olly@lfix.co.uk
Isle of Wight                              http://www.lfix.co.uk/oliver
GPG: 1024D/A54310EA  92C8 39E7 280E 3631 3F0E  1EC0 5664 7A2F A543 10EA
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     "O death, where is thy sting? O grave, where is 
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