David Finberg writes: > On Tue, 6 May 2008, Robert Sturrock wrote: > > > The Hylafax startup forks _two_ daemons: faxq and hfaxd. > > > > "faxq" dies from time to time - we would like to use SMF to > > automatically restart this. However, our (naive) configuration does > > not cater for this situation as SMF won't stop/start the service as a > > whole unless _both_ "faxq" and "hfaxd" have exited. > > Why do you have the ignore_error? That's preventing the behavior you > want, > > startd/ignore_error The ignore_error property, if set, > specifies a comma-separated list of > ignored events. Legitimate string > values in that list are core and sig- > nal. The default is to restart on all > errors.
One reason could be the same as I mentioned in the long-running thread last week: if you don't set ignore_error, then any failure in an external script you may invoke -- such as PCL2FaxCmd dropping core -- will cause the whole service to get restarted rather than just failing the current operation. Most non-trivial open source daemons I've worked with have extensive configuration options to invoke external scripts, and many of them assume that no harm will come from doing so. You can get surprising results by allowing those things to stay in the same process contract. -- James Carlson, Solaris Networking <james.d.carlson at sun.com> Sun Microsystems / 35 Network Drive 71.232W Vox +1 781 442 2084 MS UBUR02-212 / Burlington MA 01803-2757 42.496N Fax +1 781 442 1677
