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Add support for syncfs() in frontend support functions.

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This commit adds support for using syncfs() in fsync_pgdata() and
fsync_dir_recurse() (which have been renamed to sync_pgdata() and
sync_dir_recurse()).  Like recovery_init_sync_method,
sync_pgdata() calls syncfs() for the data directory, each
tablespace, and pg_wal (if it is a symlink).  For now, all of the
frontend utilities that use these support functions are hard-coded
to use fsync(), but a follow-up commit will allow specifying
syncfs().

Co-authored-by: Justin Pryzby
Reviewed-by: Michael Paquier
Discussion: https://postgr.es/m/20210930004340.GM831%40telsasoft.com
This commit is contained in:
Nathan Bossart
2023-09-06 16:27:00 -07:00
parent 3ed1956719
commit cccc6cdeb3
13 changed files with 190 additions and 56 deletions
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5
src/include/common/file_utils.h
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@@ -34,8 +34,9 @@ struct iovec; /* avoid including port/pg_iovec.h here */
#ifdef FRONTEND
extern int fsync_fname(const char *fname, bool isdir);
extern void fsync_pgdata(const char *pg_data, int serverVersion);
extern void fsync_dir_recurse(const char *dir);
extern void sync_pgdata(const char *pg_data, int serverVersion,
DataDirSyncMethod sync_method);
extern void sync_dir_recurse(const char *dir, DataDirSyncMethod sync_method);
extern int durable_rename(const char *oldfile, const char *newfile);
extern int fsync_parent_path(const char *fname);
#endif