Add file_extend_method=posix_fallocate,write_zeros. Provide a way to disable the use of posix_fallocate() for relation files. It was introduced by commit 4d330a61bb1. The new setting file_extend_method=write_zeros can be used as a workaround for problems reported from the field:
* BTRFS compression is disabled by the use of posix_fallocate() * XFS could produce spurious ENOSPC errors in some Linux kernel versions, though that problem is reported to have been fixed The default is file_extend_method=posix_fallocate if available, as before. The write_zeros option is similar to PostgreSQL < 16, except that now it's multi-block. Backpatch-through: 16 Reviewed-by: Jakub Wartak <[email protected]> Reported-by: Dimitrios Apostolou <[email protected]> Discussion: https://postgr.es/m/b1843124-fd22-e279-a31f-252dffb6fbf2%40gmx.net Branch ------ REL_17_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/4dac22aa10d2882c2e6fb465d7c314cc2d8fb754 Modified Files -------------- doc/src/sgml/config.sgml | 37 +++++++++++++++++++++++++++ src/backend/storage/file/fd.c | 3 +++ src/backend/storage/smgr/md.c | 21 +++++++++++---- src/backend/utils/misc/guc_tables.c | 19 ++++++++++++++ src/backend/utils/misc/postgresql.conf.sample | 5 ++++ src/include/storage/fd.h | 11 ++++++++ 6 files changed, 91 insertions(+), 5 deletions(-)
