But then you have to make sure the control flag gets cleared in any
case pg_verify_checksums crashes somehow or gets SIGKILL'ed ...
The usual approach is a restart with some --force option?
Setting the checksum flag is done after having finished all blocks, so
there is no problem.
There is also a problem if the db is started while the checksum is
being enabled.
What i mean is that interrupting pg_verify_checksums won't leave
pg_control in a state where starting the cluster won't work without any
further interaction.
Yep, I understood that, and agree that a way out is needed, hence the
--force option suggestion.
--
Fabien.