Re: standby recovery fails (tablespace related) (tentative patch and discussion)

On 2022-Jul-15, Alvaro Herrera wrote:

> However, looking closer I noticed that on Windows we use our own
> readdir() implementation, which AFAICT includes everything to handle
> reparse points as symlinks correctly in get_dirent_type. Which means
> that do_pg_start_backup is wasting its time with the "#ifdef WIN32" bits
> to handle junction points separately. We could just do this
>
> diff --git a/src/backend/access/transam/xlog.c b/src/backend/access/transam/xlog.c
> index b809a2152c..4966213fde 100644
> --- a/src/backend/access/transam/xlog.c
> +++ b/src/backend/access/transam/xlog.c
> @@ -8302,13 +8302,8 @@ do_pg_backup_start(const char *backupidstr, bool fast, TimeLineID *starttli_p,
> * we sometimes use allow_in_place_tablespaces to create
> * directories directly under pg_tblspc, which would fail below.
> */
> -#ifdef WIN32
> - if (!pgwin32_is_junction(fullpath))
> - continue;
> -#else
> if (get_dirent_type(fullpath, de, false, ERROR) != PGFILETYPE_LNK)
> continue;
> -#endif
>
> #if defined(HAVE_READLINK) || defined(WIN32)
> rllen = readlink(fullpath, linkpath, sizeof(linkpath));
>
> And everything should continue to work.

Hmm, but it does not:
https://cirrus-ci.com/build/4824963784900608

--
Álvaro Herrera PostgreSQL Developer — https://www.EnterpriseDB.com/