File System unmounted / Volumes are unmounted error

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Scope

This article gives guidance on what to do when the follow error occurs: File System Unmounted or Volumes Are Unmounted

Cause

Below are a few reasons why this error may occur:

  • There was a power outage on premises, and the unit didn't properly shut down.
  • There was a hard reboot done recently.
  • If the device was recently rebooted to a larger device (over 5 TB in size). With more disks in the array, it takes longer to initialize. Allow 20-45 minutes for this to occur.
This error typically resolves after giving the device some time to catch up. If you are still receiving this error message after some time, contact Datto Technical Support for further assistance.

If the ZFS filesystem is correctly mounted, the datasets named homePool/data and homePool/data/logs will show as unmounted in a ZFS list. The other datasets will show as mounted. See Figure 1.

Figure 1: Correctly mounted ZFS filesystem on a Datto appliance.


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