2x14TB pooled with UnionFS plugin, hard link does not work.

infectiousstupidity · Dec 12th 2021

Two Proxmox VMs - one for apps and one for OMV. OMV has 2x14TB drives pooled with unionFS plugion, shared to docker as a SMB share and created a named volume called "data". Cannot get hard link to work. I know I fucked up somewhere, but I'm too technically handicapped to figure it out on my own. Any help is greatly appreciated.

Code

#Snippet from docker-compose file .
 
#Root Folders in Radarr settings: /data/media/movies     Use Hardlinks instead of Copy enabled. 
 
    radarr:
        image: ghcr.io/linuxserver/radarr
        container_name: radarr
        environment:
            - PUID=1000
            - PGID=1000
            - TZ=Europe/Oslo
        volumes:
            - /opt/appdata/radarr:/config
            - data:/data
        ports:
            - 7878:7878
        restart: unless-stopped
 
 
#Root Folders in Sonarr settings: /data/media/tv and /data/media/anime      Use Hardlinks instead of Copy enabled. 
 
    sonarr:
        image: ghcr.io/linuxserver/sonarr
        container_name: sonarr
        environment:
            - PUID=1000
            - PGID=1000
            - TZ=Europe/Oslo
        volumes:
            - /opt/appdata/sonarr:/config
            - data:/data
        ports:
            - 8989:8989
        restart: unless-stopped
 
 
#Default Save Path in qBittorrent settings: /data/torrents/completed/
 
    qbittorrent:
        image: linuxserver/qbittorrent:latest
        container_name: qbittorrent
        environment:
            - PUID=1000
            - PGID=1000
            - TZ=Europe/Oslo
            - WEBUI_PORT=8080
        volumes:
            - /opt/appdata/qbittorrent:/config
            - data:/data
        restart: always
        network_mode: service:wireguard_client
 
 
 
#stat of same file in both locations
 
mike@nas:/$ stat "/export/data/torrents/completed/anime folder/anime episode.mkv"
  File: /export/data/torrents/completed/completed/anime folder/anime episode.mkv
  Size: 975633297       Blocks: 1905544    IO Block: 4096   regular file
Device: 31h/49d Inode: 5909329555424864097  Links: 1
Access: (0770/-rwxrwx---)  Uid: ( 1000/    mike)   Gid: (  100/   users)
Access: 2021-12-09 16:44:09.356000000 +0100
Modify: 2021-11-18 10:54:20.524000000 +0100
Change: 2021-11-21 16:18:06.040000000 +0100
 Birth: -
mike@nas:/$ stat "/export/data/media/anime folder/Season 01/anime episode.mkv"
  File: /export/data/media/anime/anime folder/Season 01/anime episode.mkv
  Size: 975633297       Blocks: 1905544    IO Block: 4096   regular file
Device: 31h/49d Inode: 6936366675789631954  Links: 1
Access: (0770/-rwxrwx---)  Uid: ( 1000/    mike)   Gid: (  100/   users)
Access: 2021-10-14 13:44:24.496000000 +0200
Modify: 2021-06-20 21:20:57.812000000 +0200
Change: 2021-11-21 16:18:01.252000000 +0100
 Birth: -
mike@nas:/$

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Code

# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
# / was on /dev/sda1 during installation
UUID=09f12490-a51b-4dc1-8b39-c5ebece1e743 /               ext4    errors=remount-ro 0       1
# swap was on /dev/sda5 during installation
UUID=8b66662a-edf1-45c1-8fe3-4c6bfa0abafc none            swap    sw              0       0
/dev/sr0        /media/cdrom0   udf,iso9660 user,noauto     0       0
# >>> [openmediavault]
/dev/disk/by-label/data1                /srv/dev-disk-by-label-data1    ext4    defaults,nofail,user_xattr,usrjquota=aquota.user,grpjquota=aquota.group,jqfmt=vfsv0,acl 0 2
/dev/disk/by-label/data2                /srv/dev-disk-by-label-data2    ext4    defaults,nofail,user_xattr,usrjquota=aquota.user,grpjquota=aquota.group,jqfmt=vfsv0,acl 0 2
/srv/dev-disk-by-label-data1:/srv/dev-disk-by-label-data2               /srv/e9205ecb-e30e-4af4-99d5-8b7f57ad1b43       fuse.mergerfs   defaults,nonempty,allow_other,category.create=mfs,use_ino,cache.files=auto-full,moveonenospc=true,dr$
/srv/e9205ecb-e30e-4af4-99d5-8b7f57ad1b43/data/         /export/data    none    bind,nofail     0 0
# <<< [openmediavault]

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Fahmula · Dec 17th 2021

It's my first time replying to a comment on here and bare with me.

In your docker compose you didn't bind the mounts and another thing is radarr & sonarr uses mysql which doesn't play well with NFS or SMB shares. I'm running a similar setup as you using OMV5 in a Promox VM but I'm using a LXC Container for docker instead of another VM.

What I did is have OMV only manage the data and parity drives and store the docker containers data files locally as it just works better than trying to store them on a network share. I'll attach pictures of my setup.

infectiousstupidity · Dec 18th 2021

Hi, thanks for the reply! I'm using a named docker volume, which is persistent regardless of my docker-compose file. All app data is stored locally in /opt/appdata/name-of-service, whereas data (e.g movies, series, photos etc) is stored on the OMV SMB share. I had huge problems with stale file handle errors when using NFS, but once I switched to SMB it all works wonderfully.

What puzzles me is the fact that I've set everything up according to the Servarr guide in terms of directories etc, so I'm at a loss as to why hard link does not work with my current setup. The only thing I can think of with my limited knowledge is that I fucked something up with the creation of the drive pool in the UnionFS plugin in OMV.

Edit:

Someone on Reddit pointed out that my GUID was set to 100, not 1000. I changed this and hard link seems to work fine. Resolved.

2x14TB pooled with UnionFS plugin, hard link does not work.

infectiousstupidity Dec 19th 2021

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