[Infrastructures] state machines

[Brandon S. Allbery KF8NH]

On Sep 20, 2006, at 15:13 , Wesley Craig wrote:

> I've read the three paragraphs about three times now.  I get  
> "running the log is more likely to produce the CNAME problem."   
> Please do correct me if I've read that wrong.

They're both going to have it if nothing records information about  
the CNAME dependency.  If whatever runs the log is aware of the  
dependency, it can (at minimum) raise an exception when the  
dependency is found to not be met.  There is no way to do this with a  
simple backup.  (If it's not a simple backup then it's a degenerate case

(In a fully integrated system, the dependency would also be  
recognized by the DNS control subsystem, and would either be  
satisfied or would raise an exception due to a conflict; and the  
restore procedure on the restored system itself would wait until the  
external dependency was met.)

-- 
brandon s. allbery    [linux,solaris,freebsd,perl]     allbery@kf8nh.com
system administrator [openafs,heimdal,too many hats] allbery@ece.cmu.edu
electrical and computer engineering, carnegie mellon university    KF8NH