Re: pg_upgrade

On Wed, Dec 25, 2019 at 4:26 PM Загороднев Роман Евгеньевич
<re.zagorodnev@npff.ru> wrote:
>
> FS - NTFS.
> Used different version (10, 12) and result always the same. In log I see that links was created. But pg_upgrade copies all databases. In destination data folder I see files, not links, and if no free space on disk for copy all data, error appear while upgrade.

Unfortunately, I have no idea what encoding you used, so I can't read
the file.  I tried some windows encoding but no luck, can you send the
file in utf8 or mention which encoding you're using?  Could you also
specify the full pg_upgrade command line you're using?

Hard links are not easy to distinguish from regular files in Windows.
If you identify a file path from a relation in a user database, like so:

test=# select pg_relation_filepath(c.relname::text) from pg_class c
test-# join pg_namespace n on n.oid = c.relnamespace
test-# where n.nspname not in ('information_schema', 'pg_catalog') and c.relkind = 'r' limit 1;
 pg_relation_filepath
----------------------
 base/16384/16385
(1 row)

And then check the links of this file:

C:\> fsutil hardlink list %PGDATA%/base/16384/16385