Thomas Munro d93627bcbe Add --copy-file-range option to pg_upgrade. ... The copy_file_range() system call is available on at least Linux and FreeBSD, and asks the kernel to use efficient ways to copy ranges of a file. Options available to the kernel include sharing block ranges (similar to --clone mode), and pushing down block copies to the storage layer. For automated testing, see PG_TEST_PG_UPGRADE_MODE. (Perhaps in a later commit we could consider setting this mode for one of the CI targets.) Reviewed-by: Peter Eisentraut <peter@eisentraut.org> Discussion: https://postgr.es/m/CA%2BhUKGKe7Hb0-UNih8VD5UNZy5-ojxFb3Pr3xSBBL8qj2M2%3DdQ%40mail.gmail.com		2024-03-06 12:01:01 +13:00
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src	Add --copy-file-range option to pg_upgrade.	2024-03-06 12:01:01 +13:00
KNOWN_BUGS
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MISSING_FEATURES
TODO