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72d422a522
Windows can't reliably restore symbolic links from a tar format, so instead during backup start we create a tablespace_map file, which is used by the restoring postgres to create the correct links in pg_tblspc. The backup protocol also now has an option to request this file to be included in the backup stream, and this is used by pg_basebackup when operating in tar mode. This is done on all platforms, not just Windows. This means that pg_basebackup will not not work in tar mode against 9.4 and older servers, as this protocol option isn't implemented there. Amit Kapila, reviewed by Dilip Kumar, with a little editing from me. |
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