On Fri, Mar 22, 2019 at 10:04:02AM +0100, Michael Banck wrote: > How about this: > > + <refsect1> > + <title>Notes</title> > + <para> > + When enabling checksums in a cluster, the operation can potentially take a > + long time if the data directory is large. During this operation, the > + cluster or other programs that write to the data directory must not be > + started or else data-loss will occur. > + </para>
Sounds fine to me. Will add an extra paragraph on that. > Maybe it could be formulated like "If pg_checksums is aborted or killed > in its operation while enabling or disabling checksums, the cluster > will have the same state with respect of checksums as before the > operation and pg_checksums needs to be restarted."? We could use that as well. With the current patch, and per the suggestions from Fabien, this holds true as the control file is updated and flushed last. -- Michael
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