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Add --copy-file-range option to pg_upgrade.

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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
This commit is contained in:
Thomas Munro
2024-03-06 11:39:50 +13:00
parent 2bce0ad67f
commit d93627bcbe
11 changed files with 120 additions and 4 deletions
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1
configure.ac
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@ -1749,6 +1749,7 @@ LIBS=`echo "$LIBS" | sed -e 's/-ledit//g' -e 's/-lreadline//g'`
AC_CHECK_FUNCS(m4_normalize([
backtrace_symbols
copyfile
copy_file_range
getifaddrs
getpeerucred
inet_pton