Hi again.

If you want to use another drive/folder for the galleries folder in piwigo you can edit the compose.yaml file and add another bind-mount in the volumes section of piwigo-main.
Assuming you have an external hard drive mounted at /mnt/ExternalHDD and you want to use the folder /mnt/ExternalHDD/MyPhotos as a galleries folder you can do the following : (please manually edit your compose)

networks:
  piwigo-network:
    external: false

services:
  piwigo-main:
    image: piwigo/piwigo:latest
    restart: always
    environment:
      - TZ=${timezone}
    networks:
      - piwigo-network
    ports:
      - ${piwigo_port}:80
    depends_on:
      - piwigo-db
    volumes:
      - ./piwigo-data/piwigo:/var/www/html/piwigo/
      - ./piwigo-data/scripts:/usr/local/bin/scripts/
      -  /mnt/ExternalHDD/MyPhotos:/var/www/html/piwigo/galleries
  piwigo-db:
    image: docker.io/library/mariadb:lts
    restart: always
    environment:
      - MARIADB_RANDOM_ROOT_PASSWORD=true
      - MARIADB_USER=piwigodb_user
      - MARIADB_DATABASE=piwigodb
      # Defined in .env
      - MARIADB_PASSWORD=${db_user_password} 
      - TZ=${timezone}
    networks:
      - piwigo-network
    volumes:
      - ./piwigo-data/mysql:/var/lib/mysql

Hi,

Can you open an issue here ? https://github.com/Piwigo/piwigo-docker/issues
I didn't encounter any issue when using an USB key during my testing.

RushLana......  Got the chance to remove everything associated with Piwigo today,  and then totally re-install the program...  No more divide by zero errors...... or any of the other quirky things and errors I was getting before....  This new install pulled the  16.3.0c (Docker),...  maybe something there,,  or maybe I just made an error in the the things I tried when I was trying to  get the external drive function to work ..   BTW,,I had to add the galleries folder back to the path you posted to get it to work,, ,,,,,,  /mnt/ExternalHDD/MyPhotos/galleries:/var/www/html/piwigo/galleries  ...  Is that OK, or am I getting it to work by doing something wrong ???

RushLana, Thanks for the reply...

Really important question for my unique use of Piwigo.....
Can two (2) locations be used at the same time for the galleries folder,,  ie.,

home/anne/Piwigo/piwigo-data/piwigo/galleries     AND
home/anne/videos/old-training-videos/galleries     

Situation,,
first location files on laptop install,
second location on another device

first location, files needed by all everyday are on laptop install,
second location,  files on a different device, files used rarely

Hope this makes some sense of what I am trying to do....

Hi RushLana,
I have been testing adding other locations to the galleries folder,  and I can not get it to work with 2 locations..
Every time I add another location, the location added becomes the only location detected, with all its files and folders,,

Did you have any success with your testing ??

Anne

Hi RushLana,
  Been extra busy, but I finally got time to send you the compose file....
Thanks for helping...

The compose file below makes media in   /home/anne/Piwigo/xx/galleries:/var/www/html/piwigo/galleries   the ONLY source

Each of the commented out lines, when added, make that location the ONLY location recognized for media

networks:
  piwigo-network:
    external: false

services:
  piwigo-main:
    image: piwigo/piwigo:latest
    restart: always
    environment:
      - TZ=${timezone}
    networks:
      - piwigo-network
    ports:
      - ${piwigo_port}:80
    depends_on:
      - piwigo-db
    volumes:
      - ./piwigo-data/piwigo:/var/www/html/piwigo/
      - ./piwigo-data/scripts:/usr/local/bin/scripts/
      -  /home/anne/Piwigo/xx/galleries:/var/www/html/piwigo/galleries
#      -  /mnt/12TB_Ext/PiwigoPhotos/galleries:/var/www/html/piwigo/galleries
#       - /mnt/12TB_Ext/PiwigoMEDIA/galleries:/var/www/html/piwigo/galleries

  piwigo-db:
    image: docker.io/library/mariadb:lts
    restart: always
    environment:
      - MARIADB_RANDOM_ROOT_PASSWORD=true
      - MARIADB_USER=piwigodb_user
      - MARIADB_DATABASE=piwigodb
      # Defined in .env
      - MARIADB_PASSWORD=${db_user_password}
      - TZ=${timezone}
    networks:
      - piwigo-network
    volumes:
      - ./piwigo-data/mysql:/var/lib/mysql

Hi  RushLana,

OK, I guess I do not understand docker stuff enough,,,  I do not know the why and how to get this to work.... I tried....

Could you please explain how your code works with an example..
. 
Using two locations,, the first being the standard piwigo galleries location,   

home-anne-Piwigo-piwigo-data-galleries,  where galleries contains the album folders and the pics are in the album folders

and a second location ,,

home-anne-piwigomedia-galleries,    where galleries contains the album folders and the pics are in the album folders

I can get either location to work but not  oth at the same time AND  when I switch locations, piwigo deletes the prior location data,, ( does not delete the actual data)

I am trying to learn, so if you would please explain the why and how of  things

Thanks
Anne

Last edited by Anne-FORUM-PiWigo (2026-04-14 08:01:16)