Hi, I am currently building a PostgreSQL cluster with physical replication. I want to disable full_page_writes as the underlaying filesystem (ZFS) prevents partial page writes. I would like to use pg_rewind for faster reintegration of diverted nodes but pg_rewind refuses to act if full_page_writes are disabled.
Does anyone know whether it is safe to skip this check on ZFS? Are there other implications of disabling full_page_writes that impact pg_rewind? The documentation does not state any reason to enable full_page_writes. The source code [1] mentioned something about modification during pg_read_binary_file but I do not know if it is relevant for ZFS. Help appreciated, Malte. [1]: https://git.postgresql.org/gitweb/?p=postgresql.git;a=blob;f=src/bin/ pg_rewind/libpq_fetch.c;hb=HEAD#l74
