Thread

1. BUG #19089: Mounting Issue

   PG Bug reporting form <noreply@postgresql.org> — 2025-10-15T23:12:01Z

   The following bug has been logged on the website:
   
   Bug reference:      19089
   Logged by:          Jevgeni
   Email address:      mckeny@gmail.com
   PostgreSQL version: 18.0
   Operating system:   DSM for Synology NAS
   Description:        
   
   Dear postgres dev team,
   
   to begin with: I am just a semi-professional synology user. I have tried to
   go through your documentation, however not everything is clear for me, thus
   I decided to report a bug even though there might be a solution described
   there. Please feel free to wait for a more precise bug report, but I wanna
   do my part to improve postgres and have to place my issue.
   
   Now to the bug: My goal was to install a paperless ngx version with a
   postgres DB on an synology NAS (DS920). With the following
   docker-compose.yml I have downloaded and installed the newest version 18.
   Since the synology has a container Manager as app, I dont have to dive into
   any linux "sudo" language, just import an docker-compose file created by the
   community and thats it.
   
   Part of docker-compose.yml for postgres
   "db:
       image: docker.io/library/postgres:17.6
       restart: unless-stopped
       volumes:
         - /volume1/docker/paperless/pgdata:/var/lib/postgresql/data"
   
   When trying to start the container, I faced the following mounting issue:
   "Start container paperless-db-1 failed: {"message":"failed to create task
   for container: failed to create shim task: OCI runtime create failed: runc
   create failed: unable to start container process: error during container
   init: error mounting \"/volume1/docker/paperless/pgdata\" to rootfs at
   \"/var/lib/postgresql/data\": change mount propagation through procfd: open
   o_path procfd: open
   /volume1/@docker/btrfs/subvolumes/f09606bf50bd944d6fa6cb04b29702120c1639298878114955ae09f6cfa5a0d4/var/lib/postgresql/data:
   no such file or directory: unknown"}."
   
   Changing to the version 17.6 fixed the issue.
   
   Thanks a lot for the job you are doing!
   
   

2. Re: BUG #19089: Mounting Issue

   Jacob Champion <jacob.champion@enterprisedb.com> — 2025-10-16T16:45:39Z

   On Wed, Oct 15, 2025 at 8:33 PM PG Bug reporting form
   <noreply@postgresql.org> wrote:
   > When trying to start the container, I faced the following mounting issue:
   
   Hello! Thank you for the report and the work you've done to investigate it.
   
   Unfortunately the Docker Postgres maintainers aren't the same group as
   the upstream Postgres maintainers, and you're on the upstream bugs
   list now. It looks like the Docker issue tracker is at
   
       https://github.com/docker-library/postgres
   
   and luckily, I think the issue you've reported is already tracked there:
   
       https://github.com/docker-library/postgres/issues/1370
   
   Hope this helps, and thanks again!
   
   --Jacob
   
   
   
   

3. Re: BUG #19089: Mounting Issue

   Álvaro Herrera <alvherre@kurilemu.de> — 2025-10-16T17:27:12Z

   On 2025-Oct-15, PG Bug reporting form wrote:
   
   > Now to the bug: My goal was to install a paperless ngx version with a
   > postgres DB on an synology NAS (DS920). With the following
   > docker-compose.yml I have downloaded and installed the newest version 18.
   > Since the synology has a container Manager as app, I dont have to dive into
   > any linux "sudo" language, just import an docker-compose file created by the
   > community and thats it.
   
   I think the key thing to realize here is that the Docker compose files
   are not published by the Postgres project, but by the Docker project
   themselves.  So this is not our bug, and as I understand, you need to
   report it here:
   https://github.com/docker-library/postgres
   I suspect they're going to want to know exactly which flavor are you
   running (which version of Debian or Alpine).
   
   > Part of docker-compose.yml for postgres
   > "db:
   >     image: docker.io/library/postgres:17.6
   >     restart: unless-stopped
   >     volumes:
   >       - /volume1/docker/paperless/pgdata:/var/lib/postgresql/data"
   > 
   > When trying to start the container, I faced the following mounting issue:
   > "Start container paperless-db-1 failed: {"message":"failed to create task
   > for container: failed to create shim task: OCI runtime create failed: runc
   > create failed: unable to start container process: error during container
   > init: error mounting \"/volume1/docker/paperless/pgdata\" to rootfs at
   > \"/var/lib/postgresql/data\": change mount propagation through procfd: open
   > o_path procfd: open
   > /volume1/@docker/btrfs/subvolumes/f09606bf50bd944d6fa6cb04b29702120c1639298878114955ae09f6cfa5a0d4/var/lib/postgresql/data:
   > no such file or directory: unknown"}."
   
   I have no idea what this means, but I'm sure the docker-library people
   will.
   
   -- 
   Álvaro Herrera        Breisgau, Deutschland  —  https://www.EnterpriseDB.com/