Thread: pgsql: Recursively fsync() the data directory after a crash.

Recursively fsync() the data directory after a crash.

Otherwise, if there's another crash, some writes from after the first
crash might make it to disk while writes from before the crash fail
to make it to disk.  This could lead to data corruption.

Back-patch to all supported versions.

Abhijit Menon-Sen, reviewed by Andres Freund and slightly revised
by me.

Branch
------
REL9_1_STABLE

Details
-------
http://git.postgresql.org/pg/commitdiff/4b71d28d586fa9af55713a0652614e64027789a7

Modified Files
--------------
src/backend/access/transam/xlog.c |   41 +++++++++++++
src/backend/storage/file/fd.c     |  115 +++++++++++++++++++++++++++++++++++++
src/include/storage/fd.h          |    2 +
3 files changed, 158 insertions(+)