Hi, I'm trying to initiate streaming replication between two Postgres 10 servers on Windows. The source cluster is of size ~450gb, and the cluster consists of the primary data folder, and two separated tablespaces. One of the tablespaces is configured with a symbolic link inside Windows.
Now, the problem I'm encountering is the following: I call pg_basebackup at the target as follows: >> pg_basebackup -h <SRC_IP> -U <SUPERUSER> -p <SRC_PORT> -W -D <TARGETDIR> -T >> "C:\Server >> Files\Data\ProgramsData\PostgreSQL\10\data\base\demo_tablespace"=E:\PG_tablespace_data\10\demo_tablespace >> -T "C:\Server >> Files\Data\ProgramsData\PostgreSQL\10\data\base\tsb_tablespace"=E:\PG_tablespace_data\10\tsb_tablespace >> -P -R -v This starts the pg_basebackup and it runs without problems for the duration of copying the 450gbs of data. Then the output is the following: >>pg_basebackup: initiating base backup, waiting for checkpoint to complete >>pg_basebackup: checkpoint complete >>pg_basebackup: write-ahead log start point: 181/9000028 on timeline 1 >>pg_basebackup: starting background WAL receiver >>432917950/482036946 kB (100%), 3/3 tablespaces >>pg_basebackup: could not get write-ahead log end position from server: ERROR: >>could not open file "./base/demo_tablespace": Permission denied The demo_tablespace is the one that is a symbolic link from another folder. After the error, I find that all the data is copied to the target tablespaces and primary data directory, but the data directory is missing all pg_... directories and configuration files. So no running database at target. I'm running the source Postgres service on Windows as a local account, the command is given with administrator cmd and the ./base/demo_tablespace folder's security settings should have all needed permissions for the operation. I have a hard time understanding why pg_basebackup can retrieve the data from the ./base/demo_tablespace directory, and then suddenly gets denied. I'm running out of ideas on what to try next. BR, Frans Simmelvuo
