Thread: pgsql: Fix pg_xlogdump so that it handles cross-page XLP_FIRST_IS_CONTR
Fix pg_xlogdump so that it handles cross-page XLP_FIRST_IS_CONTRECORD record. Previously pg_xlogdump failed to dump the contents of the WAL file if the file starts with the continuation WAL record which spans more than one pages. Since pg_xlogdump assumed that the continuation record always fits on a page, it could not find the valid WAL record to start reading from in that case. This patch changes pg_xlogdump so that it can handle a continuation WAL record which crosses a page boundary and find the valid record to start reading from. Back-patch to 9.3 where pg_xlogdump was introduced. Author: Pavan Deolasee Reviewed-By: Michael Paquier and Craig Ringer Discussion: CABOikdPsPByMiG6J01DKq6om2+BNkxHTPkOyqHM2a4oYwGKsqQ@mail.gmail.com Branch ------ master Details ------- http://git.postgresql.org/pg/commitdiff/bab7823a49bb210b8920ae59e5126d27e4d63833 Modified Files -------------- src/backend/access/transam/xlogreader.c | 91 +++++++++++++++++++++++---------- 1 file changed, 64 insertions(+), 27 deletions(-)