🚀 go-pugleaf

daved@cortex.physiol.su.oz.au (Dave Davey) writes:

>In <rossc.705659410@extro.ucc.su.OZ.AU> rossc@extro.ucc.su.OZ.AU (Ross Cartlidge) writes:

>>rossc@extro.ucc.su.OZ.AU (Ross Cartlidge) writes:

>->This meant that extro was running but the MHS stuff was not there
>->at all. I noticed this on Sunday, but didn't bring metro down
>->as I didn't want to lose non MHSnet services - which were working fine.

>->Unfortunately there was a flaw in this - sendmail fails badly
>->when the mailer it calls doesn't exist. This caused mail to get
>->bounced that was directed to MHS sites. When I was notified of this
>->problem (Thanks to Jim Richardson) I stopped sendmail to stop
>->mail from being accepted.

>->I have disabled auto-booting to solve this problem in the future -

>This is a little extreme is it not?  Why not include some contingency tests
>in your boot time startup code and only start sendmail if those tests are
>satisfactory?  The existance of the MHS program that your sendmail invokes
>would be a good one to deal with the above problem.

I am not going to have contingency tests - for every possible
thing that can go wrong with the system - sounds like the "Halting
Problem" to me.

If the system crashes - it usually means there is something
wrong with the system (in this case a broken power supply).
I have always thought that auto-booting is a bit like the PC
solution to a bad operating system - use <CNTL><ALT><DEL>.

Of course, there are valid uses for auto-booting - like
power failures - but these are very rare.

rossc
-- 
________________________________________________________________________
Ross Rodney Cartlidge			    |   rossc@extro.ucc.su.oz.au
University Computing Service, H08	    |   Phone:     +61 2 6923497
University of Sydney, NSW 2006, Australia   |   FAX:       +61 2 6606557