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Recursively fsync() the data directory after a crash.

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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.
This commit is contained in:
Robert Haas
2015-05-04 12:06:53 -04:00
parent f1d7516770
commit 30ba0d0c21
5 changed files with 160 additions and 1 deletions
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2
src/backend/utils/misc/guc.c
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@ -377,6 +377,7 @@ int trace_recovery_messages = LOG;
int num_temp_buffers = 1000;
char *data_directory;
char *ConfigFileName;
char *HbaFileName;
char *IdentFileName;
@ -414,7 +415,6 @@ static char *timezone_string;
static char *log_timezone_string;
static char *timezone_abbreviations_string;
static char *XactIsoLevel_string;
static char *data_directory;
static char *custom_variable_classes;
static int max_function_args;
static int max_index_keys;