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public:8115_issue:cloud_operation_is_not_supported_on_readonly_volume

ISSUE: [ReadFile] (381) The cloud operation is not supported on a read-only volume (backup on OneDrive folder with a file backup)

Article ID: 8115
Reviewed: 28/04/2021

Product Version:
AhsayACB / AhsayOBM: 8.1 or above
OS: All platforms

Problem Description

When performing a file backup on a OneDrive folder with Files On-Demand enabled, the following error message is received in the backup report:

No. Type Timestamp Log
* ... ... ...
* info ... ...
* erro YYYY/MM/DD hh:mm:ss [New File] File="C:\Users\username\folder\file" Error="java.io.IOException: [ReadFile] (381) The cloud operation is not
supported on a read-only volume ...
...
* ... ... ...
or

No. Type Timestamp Log
* ... ... ...
* info ... ...
* erro YYYY/MM/DD hh:mm:ss [New File] File="C:\Users\username\folder\file" Error="java.io.IOException: [CreateFileW] (395) Access to cloud file is
denied ...
...
* ... ... ...
Note: This issue will only affect file backup on OneDrive folder with Files On-Demand enabled

Cause

When the "Files On-Demand" is enabled for your OneDrive folder, it saves disk space by not saving the file on the computer, instead, new files created online or on another device appear as online-only files in File Explorer.

Resolution

To resolve the issue, there are a few options:

  • Option 1
    Disable the File On-Demand option.  Note that this will increase the disk space usage on the affected client computer.

    Click Here for details on how to disable the option.

  • Option 2
    Unselect the OneDrive folder from the backup source of the affected backup set.

    Create a new Cloud File Backup set to backup the OneDrive data.



  • Option 3 (not recommended)
    Patch the AhsayCBS server and AhsayOBM / ACB client software to hotfix version 8.5.0.127 or above.

    Click Here for instruction on how to patch the AhsayCBS.
    Click Here for instruction on how to patch the AhsayOBM / ACB.

    After the patch, backup job will skip the backup of the online (on-demand) files in, an informative message will be displayed to suggest that the backup of the corresponding file was skipped.

Keywords

one, drive, onedrive, cloud, on, demand, ondemand

public/8115_issue/cloud_operation_is_not_supported_on_readonly_volume.txt · Last modified: 2021/05/18 12:03 by edward.chan