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postgresql/src/include
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Thomas Munro f78ca6f3eb Introduce file_copy_method setting. 
It can be set to either COPY (the default) or CLONE if the system
supports it.  CLONE causes callers of copydir(), currently CREATE
DATABASE ... STRATEGY=FILE_COPY and ALTER DATABASE ... SET TABLESPACE =
..., to use copy_file_range (Linux, FreeBSD) or copyfile (macOS) to copy
files instead of a read-write loop over the contents.

CLONE gives the kernel the opportunity to share block ranges on
copy-on-write file systems and push copying down to storage on others,
depending on configuration.  On some systems CLONE can be used to clone
large databases quickly with CREATE DATABASE ... TEMPLATE=source
STRATEGY=FILE_COPY.

Other operating systems could be supported; patches welcome.

Co-authored-by: Nazir Bilal Yavuz <byavuz81@gmail.com>
Reviewed-by: Robert Haas <robertmhaas@gmail.com>
Reviewed-by: Ranier Vilela <ranier.vf@gmail.com>
Discussion: https://postgr.es/m/CA%2BhUKGLM%2Bt%2BSwBU-cHeMUXJCOgBxSHLGZutV5zCwY4qrCcE02w%40mail.gmail.com
2025-04-08 21:35:38 +12:00
..
access Allow NOT NULL constraints to be added as NOT VALID 2025-04-07 19:19:50 +02:00
archive Update copyright for 2025 2025-01-01 11:21:55 -05:00
backup Update copyright for 2025 2025-01-01 11:21:55 -05:00
bootstrap pg_noreturn to replace pg_attribute_noreturn() 2025-03-13 12:37:26 +01:00
catalog Add function to get memory context stats for processes 2025-04-08 11:06:56 +02:00
commands Add an additional hook for EXPLAIN option validation. 2025-03-20 13:47:55 -04:00
common Update Unicode data to Unicode 16.0.0 2025-04-03 12:00:09 +02:00
datatype Avoid using timezone Asia/Manila in regression tests. 2025-01-20 15:47:53 -05:00
executor Change SQL-language functions to use the plan cache. 2025-04-02 14:06:02 -04:00
fe_utils add new list type simple_oid_string_list to fe-utils/simple_list 2025-04-04 16:01:22 -04:00
foreign Update copyright for 2025 2025-01-01 11:21:55 -05:00
jit Fix grammatical typos around possessive "its" 2025-01-29 14:39:14 +07:00
lib Use PRI?64 instead of "ll?" in format strings (continued). 2025-03-29 10:43:57 +01:00
libpq Add local-address escape "%L" to log_line_prefix. 2025-04-07 11:06:05 -04:00
mb pg_noreturn to replace pg_attribute_noreturn() 2025-03-13 12:37:26 +01:00
nodes Speedup child EquivalenceMember lookup in planner 2025-04-08 18:09:57 +12:00
optimizer Speedup child EquivalenceMember lookup in planner 2025-04-08 18:09:57 +12:00
parser Extend ALTER DEFAULT PRIVILEGES to define default privileges for large objects. 2025-04-04 19:02:17 +09:00
partitioning Fix incorrect #endif comment 2025-03-10 13:36:04 +13:00
pch Update copyright for 2025 2025-01-01 11:21:55 -05:00
port Add support for basic NUMA awareness 2025-04-07 23:08:17 +02:00
portability Update copyright for 2025 2025-01-01 11:21:55 -05:00
postmaster pg_noreturn to replace pg_attribute_noreturn() 2025-03-13 12:37:26 +01:00
regex Update copyright for 2025 2025-01-01 11:21:55 -05:00
replication Use standard die() signal handler in walreceiver 2025-04-04 12:38:32 +03:00
rewrite Eliminate code duplication in replace_rte_variables callbacks 2025-02-25 16:11:34 +09:00
snowball Update to latest Snowball sources. 2025-02-18 21:13:54 -05:00
statistics Stats: use schemaname/relname instead of regclass. 2025-03-25 11:16:06 -07:00
storage Introduce file_copy_method setting. 2025-04-08 21:35:38 +12:00
tcop Improve error message when standby does accept connections. 2025-04-02 15:13:01 +09:00
tsearch Update copyright for 2025 2025-01-01 11:21:55 -05:00
utils Add function to get memory context stats for processes 2025-04-08 11:06:56 +02:00
.gitignore Use <stdint.h> and <inttypes.h> for c.h integers. 2024-12-04 15:05:38 +13:00
c.h Revert "Use workaround of __builtin_setjmp only on MINGW on MSVCRT" 2025-04-07 11:01:15 -04:00
fmgr.h Avoid mixing designated and non-designated field initializers. 2025-03-27 11:06:30 -04:00
funcapi.h Update copyright for 2025 2025-01-01 11:21:55 -05:00
getopt_long.h IWYU widely useful pragmas 2025-01-15 18:57:53 +01:00
Makefile Use <stdint.h> and <inttypes.h> for c.h integers. 2024-12-04 15:05:38 +13:00
meson.build Update copyright for 2025 2025-01-01 11:21:55 -05:00
miscadmin.h Add function to get memory context stats for processes 2025-04-08 11:06:56 +02:00
pg_config.h.in Add support for basic NUMA awareness 2025-04-07 23:08:17 +02:00
pg_config_manual.h Avoid invalidating all RelationSyncCache entries on publication rename. 2025-03-13 09:16:33 +05:30
pg_getopt.h IWYU widely useful pragmas 2025-01-15 18:57:53 +01:00
pg_trace.h IWYU widely useful pragmas 2025-01-15 18:57:53 +01:00
pgstat.h pgstat: Allow checksum errors to be reported in critical sections 2025-03-30 16:12:04 -04:00
pgtar.h Update copyright for 2025 2025-01-01 11:21:55 -05:00
pgtime.h Seek zone abbreviations in the IANA data before timezone_abbreviations. 2025-01-16 14:11:19 -05:00
port.h Add timingsafe_bcmp(), for constant-time memory comparison 2025-04-02 15:32:40 +03:00
postgres.h IWYU widely useful pragmas 2025-01-15 18:57:53 +01:00
postgres_ext.h libpq: Deprecate pg_int64. 2025-03-25 21:40:00 +13:00
postgres_fe.h IWYU widely useful pragmas 2025-01-15 18:57:53 +01:00
varatt.h Update copyright for 2025 2025-01-01 11:21:55 -05:00
windowapi.h Update copyright for 2025 2025-01-01 11:21:55 -05:00