Postgres Pro
Downloads
Home   >   mailing lists

Re: pg_basebackup bug: base backup is double the size of the database - Mailing list pgsql-admin

From Matheus de Oliveira
Subject Re: pg_basebackup bug: base backup is double the size of the database
Date
Msg-id CAJghg4Lqpc9RE-W1x-ufbjjRX2Kry7M68dqp1gSFOwhoq9tEJA@mail.gmail.com
Whole thread Raw
In response to pg_basebackup bug: base backup is double the size of the database  (Craig James <cjames@emolecules.com>)
Responses Re: pg_basebackup bug: base backup is double the size of the database
Re: pg_basebackup bug: base backup is double the size of the database
List pgsql-admin
Tree view

On Wed, Jan 21, 2015 at 3:32 PM, Craig James <cjames@emolecules.com> wrote:
# ls -l /data/postgres-9.3/main/pg_tblspc/16747
lrwxrwxrwx 1 postgres postgres 27 2014-08-18 11:28 /data/postgres-9.3/main/pg_tblspc/16747 -> /postgres/tablespaces/uorsy/

# du -sh /data/postgres-9.3/tablespaces/uorsy
35G     /data/postgres-9.3/tablespaces/uorsy

# du -sh /data/postgres-9.3/tablespaces/uorsy/*
35G     /data/postgres-9.3/tablespaces/uorsy/8208624
8.1M    /data/postgres-9.3/tablespaces/uorsy/PG_9.3_201306121
4.0K    /data/postgres-9.3/tablespaces/uorsy/pgsql_tmp
4.0K    /data/postgres-9.3/tablespaces/uorsy/PG_VERSION

# find /data/postgres-9.3/tablespaces/uorsy \! -links 1 -type f | wc -l
740


Am I overlooking or is there something really wrong here?

First, all files of a tablespace should be inside PG_9.3_201306121 directory, why do you have those other files? Second, there shouldn't be any hard link inside of a tablespace, as PostgreSQL is not creating them, someone must have done it by hand. I'm guessing all inside PG_9.3_201306121 is linked to the root path of the tablespace, which is wrong.

If I'm not overlooking, then neither barman nor pg_basebackup is to blame, but whoever created the hard links; if PostgreSQL did this (which I doubt) then it is a bug.

Regards,
--
Matheus de Oliveira
Analista de Banco de Dados
Dextra Sistemas - MPS.Br nível F!
www.dextra.com.br/postgres

pgsql-admin by date:

Previous
From: Craig James
Date:
Subject: Re: pg_basebackup bug: base backup is double the size of the database
Next
From: Matheus de Oliveira
Date:
Subject: Re: PostgreSQL 9.3 synchronous replication