Request to use "Canonical/Mirror"

[Felicia P]

Hello, I see that ISC updated terminology for BIND9 to use 
primary/secondary in addition to the original master/slave which many 
projects have been deprecating.

In the context of BIND9, it seems that 'primary/secondary' is less clear 
than master/slave.

My understanding is that it is possible to have a standalone BIND server 
that is running as a 'master' yet acting as a 'secondary' for a 
particular domain.  In this context, secondary doesn't necessarily refer 
to the 'slave' status of the server, but that it is sort of like a 
backup server in the event that the primary is unavailable.

Given this, it seems like instead of 'primary/secondary', a better 
choice of terms would be 'canonical/mirror' which unambiguously conveys 
the roles of respective servers and does not overlap with other contexts 
or meanings of primary/secondary.