[Bug]: --no-data-checksums is not when dataChecksums is false on PostgreSQL 18+

Is there an existing issue already for this bug?

• I have searched for an existing issue, and could not find anything. I believe this is a new bug.

I have read the troubleshooting guide

• I have read the troubleshooting guide and I think this is a new bug.

I am running a supported version of CloudNativePG

• I have read the troubleshooting guide and I think this is a new bug.

Contact Details

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Version

1.30.0

What version of Kubernetes are you using?

1.37

What is your Kubernetes environment?

Other

How did you install the operator?

Helm

What happened?

The defaults for data checksums were swapped on PostgreSQL 18+ so that data checksums are enabled by default. On Postgres 18+, when dataChecksums is false initdb --no-data-checksums is not set, so data checksums are always enabled. It is desirable to disable data checksums on filesystems that already perform data checksums, e.g. ZFS.

Cluster resource

Relevant log output

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