Single file restore from snapshot copy fails with an error
In the single file restore from snapshot copy operation, a new disk from snapshot is created and attached on the target VM, which is not detected internally. Due to this, the disk attached to the target VM is not found by NetBackup Snapshot Manager's on-host agent deployed on the target VM.
Following error message is displayed in the NetBackup Job monitor:
Warning nbcs (pid=49733) Failed to restore file(s) / folder(s) from snapshot/backup. Internal status code: 2060017 . . Failed to restore file(s) and folder(s) from snapshot for asset: <asset-id>
Following corresponding errors are displayed in NetBackup Snapshot Manager logs at /cloudpoint/logs/flexsnap.log*:
<redacted> flexsnap-agent-onhost[525538] Thread-32709 flexsnap.connectors.base: ERROR - Request failed unexpectedly Traceback (most recent call last): File "flexsnap/connectors/base.py", line 112, in run File "flexsnap-agent.py", line 472, in handle_get File "flexsnap/agent.py", line 785, in find_asset flexsnap.NotFoundError: <disk-id> not found
Workaround:
Manually trigger re-scan of disks on target VM as mentioned below for Windows and Linux systems:
For Windows:
If any network device is attached to the device, detach it.
Open the command prompt in administrator privileges and run the following command:
diskpart
Inside the diskpart prompt, type rescan and press the Enter key.
Exit the diskpart prompt and the command line.
Perform the single file restore from snapshot copy operation again.
For Linux:
Run the following command:
echo "- - -" > /sys/class/scsi_host/hostX/scan
where X is the number of SCSI host to scan.
Ensure that you run the above command for each SCSI host available.
For example, if there are three devices, then run the following commands:
# echo "- - -" > /sys/class/scsi_host/host0/scan
# echo "- - -" > /sys/class/scsi_host/host1/scan
# echo "- - -" > /sys/class/scsi_host/host2/scan
If the issue is not resolved, then restart the target VM.