Symptoms
Various symptoms may be observed for a container with a highly fragmented private area:
The container starts with a sharing violation error:
Example:
C:\Users\Administrator>vzctl start 6887 Starting container... WARNING: (C:\vz\Private\6887\root.efd, {971890c5-833d-4857-86f7-17cc762bfda3}) sharing violation, trying nonpaged mount Container is mounted Container was started
The container does not start with a
dq_mount failed
error:Example:
C:> vzctl start 101 Starting container ... Parallels Virtuozzo Containers API function call VZVolumeMountExW failed (C:\VZ\Private\101\root.efd, {89B53077-4330-4E33-83E9-5F9968F2E13B}) err = 32 Parallels Virtuozzo Containers API function call dq_mount failed
The container may show NTFS errors in its Event Viewer
The Windows Process Activation Service may fail to start in the container
- The container may be operating slowly on I\O operations.
Cause
The container's private area is highly fragmented.
Check the fragmentation level as per the following Knowledgebase article:
114829 How to check a container's disk fragmentation level
Resolution
Perform disk defragmentation on the affected container. For more information, see :
114828 Disk defragmentation in containers best practices
See also:
112842 Unable to start container: VZVolumeMountExW failed