Re: [GENERAL] Recover PostgreSQL database folder data

On 21-04-2017 13:48, Adrian Klaver wrote:
> On 04/21/2017 09:40 AM, Edson Lidorio wrote:
>> Hi,
>> There was a disaster in my development note. I was able to recover the
>> data folder. PostgreSQL 9.6.2, was installed in Centos 7.
>>
>> Here are the procedures I'm trying to initialize Postgresql for me to do
>> a backup.
>>
>> 1- I installed PostgreSQL 9.6.2 on a VM with Centos 7.
>> 2- I stopped the PostgreSQL service: sudo systemctl stop postgresql-9.6
>> 3- I renamed the /var/lib/pgsql/9.6/data folder to date data_old and
>> copied the old date folder
>> 4- I gave permission in the folder date:
>>      sudo chown postgres: postgres /var/lib/pgsql/9.6/data;
>>      sudo chmod 700 /var/lib/pgsql/9.6/data
>> 5 - I tried to start the service: sudo systemctl start postgresql-9.6
>> It is generating the following errors:
>>
>> Abr 21 01:25:35 localhost.localdomain systemd[1]: Starting PostgreSQL
>> 9.6 database server...
>> Abr 21 01:25:36 localhost.localdomain postgresql96-check-db-dir[19996]:
>> cat: /var/lib/pgsql/9.6/data//PG_VER…ada
>> Abr 21 01:25:36 localhost.localdomain postgresql96-check-db-dir[19996]:
>> cat: /var/lib/pgsql/9.6/data//PG_VER…ada
>> Abr 21 01:25:36 localhost.localdomain systemd[1]:
>> postgresql-9.6.service: control process exited, code=ex...us=1
>> Abr 21 01:25:36 localhost.localdomain systemd[1]: Failed to start
>> PostgreSQL 9.6 database server.
>> Abr 21 01:25:36 localhost.localdomain systemd[1]: Unit
>> postgresql-9.6.service entered failed state.
>> Abr 21 01:25:36 localhost.localdomain systemd[1]: postgresql-9.6.service
>> failed.
>> Hint: Some lines were ellipsized, use -l to show in full.
>
> What do you see if you do the above, add -l to the systemctl command?
● postgresql-9.6.service loaded failed failed    PostgreSQL 9.6 database
server
>
> What does the system log show?
> Apr 21 04:01:01 localhost systemd: Started Session 53 of user root.
> Apr 21 04:01:01 localhost systemd: Starting Session 53 of user root.
> Apr 21 04:01:48 localhost systemd: Starting PostgreSQL 9.6 database
> server...
> Apr 21 04:01:48 localhost postgresql96-check-db-dir: cat:
> /var/lib/pgsql/9.6/data//PG_VERSION: Permissão negada
> Apr 21 04:01:48 localhost postgresql96-check-db-dir: cat:
> /var/lib/pgsql/9.6/data//PG_VERSION: Permissão negada
> Apr 21 04:01:48 localhost postgresql96-check-db-dir: An old version of
> the database format was found.
> Apr 21 04:01:48 localhost postgresql96-check-db-dir: You need to dump
> and reload before using PostgreSQL 9.6.
> Apr 21 04:01:48 localhost postgresql96-check-db-dir: See
> /usr/share/doc/postgresql96/README.rpm-dist for more information.
> Apr 21 04:01:48 localhost systemd: postgresql-9.6.service: control
> process exited, code=exited status=1
> Apr 21 04:01:48 localhost systemd: Failed to start PostgreSQL 9.6
> database server.
> Apr 21 04:01:48 localhost systemd: Unit postgresql-9.6.service entered
> failed state.
> Apr 21 04:01:48 localhost systemd: postgresql-9.6.service failed.
> Apr 21 04:02:07 localhost gnome-session: (nautilus:17753): Gtk-WARNING
> **: gtk_widget_size_allocate(): attempt to allocate widget with width
> -15 and height 34
> Apr 21 04:02:57 localhost gnome-session: (nautilus:17753): Gtk-WARNING
> **: gtk_widget_size_allocate(): attempt to allocate widget with width
> -15 and height 34
> Apr 21 04:03:00 localhost gnome-session: (nautilus:17753): Gtk-WARNING
> **: gtk_widget_size_allocate(): attempt to allocate widget with width
> -15 and height 34
>
>
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