Hi, There is the following description in wal.sgml.
Segment files are given ever-increasing numbers as names, starting at <filename>000000010000000000000000</filename>. But the first WAL segment file that initdb creates is 000000010000000000000001 not 000000010000000000000000. This change was caused by old commit 8c843fff2d, but seems the documentation had not been updated unfortunately a long time. Attached patch replaces 000000010000000000000000 with 000000010000000000000001 in the above description. This patch needs to be back-patched to all the supported versions. Regards, -- Fujii Masao
first_wal_segment_v1.patch
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