On 06/09/2017 07:07 AM, Bruce Momjian wrote:
On Fri, Jun 9, 2017 at 12:00:56PM +0200, Arnaud L. wrote:
Hi
The pg_upgrade documentation for PostgreSQL 9.6 states that --link will use
junction points on Windows.
Shouldn't it rather user hard-links ?
If I'm not mistaken, with junction points (i.e. soft-links to directories),
the old data dir cannot be removed.
With hard-links to file, we can get rid of the old data dir once we are sure
that the upgrade is fine.
I was told junction points on Windows were hard links and no one has
ever complained about not being able to remove them.
https://msdn.microsoft.com/en-us/library/windows/desktop/aa365006(v=vs.85).aspx
Seems to me the difference is hard links point to file, junctions to
directories.
So if I am following:
https://en.wikipedia.org/wiki/NTFS_junction_point#Creating_or_deleting_a_junction_point
You remove the junction and then the directory it points to.
--
Adrian Klaver
adrian.klaver@xxxxxxxxxxx
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