AppSync: Unmount phase fails with error code 3

Summary: AppSync:Unmount phase fails with error code 3

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Symptoms



AppSync Event output:
Sat 03/04/2017 04:45:18 PM        Unmount Copy Unmount failed for C:\AppSyncMounts\folder1\folder2\folder3\_folder4\mountpoint\. Failed to get information about the volume. Verify that the filesystem is dismounted. Continuing with the next volume.

Server Log:
 
03-04-2017 16:45:18.145 INFO [Thread-528 (HornetQ-client-global-threads-1401538319)] [com.emc.archway.service.eventservice.EventServiceBean] [hostname] [] EVENT [VSS_000084]: Unmount failed for C:\AppSyncMounts\folder1\folder2\folder3\_folder4\mountpoint\. Failed to get information about the volume. Verify that the filesystem is dismounted. Continuing with the next volume.(METADATA: TYPE-WARNING, TIME-2017-03-04 16:45:18.145+0900NATIVETIME-2017-03-04 16:45:16.446+0900, HOST-hostname.global.domain.com, PHASE-Unmount Copy, THREAD=27596, USER-xxxx, CATEGORY-GENERIC, SESSIONID-8EXXg2LX2FKoev_d_egoLIsaBqStmX7PAW7mEMdV)
 
Agent Log:
 
2017-03-04 16:45:16.446 ERROR [27596]  []           [hostname] [13xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx] VdsAgent::PerformUnmountOperation - GetVolumeNameForVolumeMountPoint failed with error: 3 for mount point:C:\AppSyncMounts\folder1\folder2\folder3\_folder4\mountpoint\.
2017-03-04 16:45:16.446 ERROR [27596]  []           [hostname] [13xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx] VdsAgent::PerformUnmountOperation - did not find the volume in a mounted state, continuing with next volume.

Cause

User directed AppSync to mount copies to the same DAG server from which the copy was created.

Resolution

Refer to "AppSync User and Administrator Guide" 
"Protect Microsoft Exchange -- Mounting Exchange copies 

AppSync can mount a copy on-demand, or as part of a plan.
Copies created on a standalone production Exchange server can be mounted to:
  • An alternate host in the same location as the production host.
  • An alternate host in a new location. You specify mount option by adding an alternate path to the start of the path.
  • The production host in an alternate location.
Copies created in a DAG can be mounted to:
  • An alternate host.
  • A server in another DAG.
  • Another server in the same DAG.
Note
  • Copies cannot be mounted to the same DAG server on which the copy was created.
  • A single mount host with Exchange 2013 Management Tools can be used to run consistency check for Exchange 2010 and Exchange 2013 copies.

Affected Products

AppSync

Products

AppSync
Article Properties
Article Number: 000062016
Article Type: Solution
Last Modified: 18 Sept 2025
Version:  4
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