pg_upgrade: Allow use of file cloning
Peter Eisentraut <peter_e@gmx.net>
pg_upgrade: Allow use of file cloning Add another transfer mode --clone to pg_upgrade (besides the existing --link and the default copy), using special file cloning calls. This makes the file transfer faster and more space efficient, achieving speed similar to --link mode without the associated drawbacks. On Linux, file cloning is supported on Btrfs and XFS (if formatted with reflink support). On macOS, file cloning is supported on APFS. Reviewed-by: Michael Paquier <michael@paquier.xyz>
Files
| Path | Change | +/− |
|---|---|---|
| configure | modified | +1 −1 |
| configure.in | modified | +1 −0 |
| doc/src/sgml/ref/pgupgrade.sgml | modified | +34 −6 |
| src/bin/pg_upgrade/check.c | modified | +11 −2 |
| src/bin/pg_upgrade/file.c | modified | +90 −0 |
| src/bin/pg_upgrade/option.c | modified | +7 −0 |
| src/bin/pg_upgrade/pg_upgrade.h | modified | +5 −1 |
| src/bin/pg_upgrade/relfilenode.c | modified | +29 −15 |
| src/include/pg_config.h.in | modified | +3 −0 |