Backup Ugreen NAS folder to Raspberry Pi NAS folder using OMV with remotemount, rsnapshot, and system tasks

1st Official Post

    I know this is probably not the 'correct' way to do this but it works for me and I wanted to share.


    This assumes that you have setup your Ugreen NAS with drives, storage pools, and volumes.

    This also assumes that you have setup your Raspberry Pi NAS with OpenMediaVault with disks plugged in to the Pi, and file systems setup on those disks.

    This is the version of OMV that I am using: Version 7.7.4-1 (Sandworm), Kernel Linux 6.12.20+rpt-rpi-v8


    # Setup Ugreen NAS for Backup

    1. Create shared folder on Ugreen NAS called 'UG-S'.

    2. Create a Ugreen NAS user that had read only access permissions for the 'UG-S' shared folder.


    # Setup Raspberry Pi NAS for Backup

    1. Install openmediavault-remotemount 7.0.2

    2. Install openmediavault-rsnapshot 7.0.1

    3. Create a remote mount to the 'UG-S' shared folder using the Ugreen NAS user you created.

    4. Create a shared folder named 'UG-S' on the 'UG-S' remote mount, use '/' as the relative path.

    5. Create a shared folder named 'PI-S' on the file system for the drive that is plugged into the Pi-NAS, use 'PI-S/' as the relative path.

    6. Create a snapshot with 'UG-S' shared folder as the source folder and 'PI-S' shared folder as the target folder. Use the default 'retain settings': hourly:0, daily:7, weekly:4, monthly:3, yearly:0. Leave all other options as the default. Once created, manually run the snapshot to create the first backup.

    7. Create individual System/Scheduled Tasks (cron jobs) to execute the snapshot for daily, weekly, and monthly backups. The commands are found in '/etc/cron.d/openmediavault-rsnapshot'. This allows control of the timing of snapshots using the OMV GUI.

    8. Create daily scheduled task: Set execution time/date parameters. Set the command to '/var/lib/openmediavault/cron.d/rsnapshot daily'.

    9. Create weekly scheduled task: Set execution time/date parameters. Set the command to '/var/lib/openmediavault/cron.d/rsnapshot weekly'.

    10. Create monthly scheduled task: Set execution time/date parameters. Set the command to '/var/lib/openmediavault/cron.d/rsnapshot monthly'.

    NOTES: Make sure the Pi NAS is on when it is supposed to run the snapshot. If it is not on, the backup will be skipped.

  • macom

    Approved the thread.
    • Official Post
    Quote from lwvogan

    I know this is probably not the 'correct' way to do this but it works for me and I wanted to share.

    There will always be shades of gray when it comes "best practices". I tend to favor processes that work, even if they're not necessary the perfect solution. Never let the pursuit of perfection stand in the way of something that works. Thanks for sharing something that another user might find and use.

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