pgsql: Add GUC ignore_invalid_pages.

From: Fujii Masao <fujii(at)postgresql(dot)org>
To: pgsql-committers(at)lists(dot)postgresql(dot)org
Subject: pgsql: Add GUC ignore_invalid_pages.
Date: 2020-01-22 02:57:42
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Add GUC ignore_invalid_pages.

Detection of WAL records having references to invalid pages
during recovery causes PostgreSQL to raise a PANIC-level error,
aborting the recovery. Setting ignore_invalid_pages to on causes
the system to ignore those WAL records (but still report a warning),
and continue recovery. This behavior may cause crashes, data loss,
propagate or hide corruption, or other serious problems.
However, it may allow you to get past the PANIC-level error,
to finish the recovery, and to cause the server to start up.

Author: Fujii Masao
Reviewed-by: Michael Paquier



Modified Files
doc/src/sgml/config.sgml | 25 +++++++++++++++++++++++++
src/backend/access/transam/xlogutils.c | 9 +++++++--
src/backend/utils/misc/guc.c | 20 ++++++++++++++++++++
3 files changed, 52 insertions(+), 2 deletions(-)

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