Re: WIP/PoC for parallel backup

On Mon, Mar 16, 2020 at 11:08 AM Rajkumar Raghuwanshi <
rajkumar(dot)raghuwanshi(at)enterprisedb(dot)com> wrote:

> Thanks for the patches.
>
> I have verified reported issues with new patches, issues are fixed now.
>
> I got another observation where If a new slot name given without -C
> option, it leads to server crash error.
>
> [edb(at)localhost bin]$ ./pg_basebackup -p 5432 -j 4 -D /tmp/bkp --slot
> test_bkp_slot
> pg_basebackup: error: could not send replication command
> "START_REPLICATION": ERROR: replication slot "test_bkp_slot" does not exist
> pg_basebackup: error: could not list backup files: server closed the
> connection unexpectedly
> This probably means the server terminated abnormally
> before or while processing the request.
> pg_basebackup: removing data directory "/tmp/bkp"
>

It seems to be an expected behavior. The START_BACKUP command has been
executed, and
pg_basebackup tries to start a WAL streaming process with a non-existent
slot, which results in
an error. So the backup is aborted while terminating all other processes.

--
Asif Rehman
Highgo Software (Canada/China/Pakistan)
URL : www.highgo.ca