Thread: pgsql: Fix pg_rewind bugs when rewinding a standby server.
Fix pg_rewind bugs when rewinding a standby server. If the target is a standby server, its WAL doesn't end at the last checkpoint record, but at minRecoveryPoint. We must scan all the WAL from the last common checkpoint all the way up to minRecoveryPoint for modified pages, and also consider that portion when determining whether the server needs rewinding. Backpatch to all supported versions. Author: Ian Barwick and me Discussion: https://www.postgresql.org/message-id/CABvVfJU-LDWvoz4-Yow3Ay5LZYTuPD7eSjjE4kGyNZpXC6FrVQ%40mail.gmail.com Branch ------ REL_10_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/8b5c353ecec81102680ba6ab82ce73961dd266a1 Modified Files -------------- src/bin/pg_rewind/parsexlog.c | 11 +- src/bin/pg_rewind/pg_rewind.c | 56 +++++---- src/bin/pg_rewind/t/008_min_recovery_point.pl | 161 ++++++++++++++++++++++++++ 3 files changed, 205 insertions(+), 23 deletions(-)