VSS allows backups of in-use, locked, or open files without interrupting whatever process or user is currently accessing those files. If this does not resolve the issue, open Event Viewer as described in the "Open Event Viewer and view events related to VSS" section and look for events related to the service or process that hosts the writer.
When the backup is finished, the Writer will revert to the Stable state. Each backup type will have its own set of Writers, and each Writer is controlled by a Windows Service.
This response contains a reference to a third party World Wide Web site. This usually brings the Writer back to a stable state. Please refer to the following Symantec article: Yes please, show me how! Writers that are currently In-Progress are being used for a backup. It is also important to note that restarting some services can cause downtime for the application that is related to the service.
A list of currently-available Writers can be accessed via the command prompt on any Windows computer.
There are inherent dangers in the use of any software found on the Internet, and Microsoft cautions you to make sure that you completely understand the risk before retrieving any software from the Internet.
It is important to note that not all services that control VSS Writers can be restarted. Microsoft is providing this information as a convenience to you.
A system may have active Writers that are not in this list. If no backups are running, the writer may be stuck, and can be reset like Failed or Unstable writers. This is especially useful for databases, as it means backups can be taken while the database is active, without requiring downtime.
Restarting the service that controls the writer will reset the writer and, in most cases, bring it back to a stable state. Writers that display as In-Progress or Waiting for Completion are currently in use by some backup process. If there are any particular requirement or order to follow to restart a service or application, you should follow the recommended restart procedure.
Generally speaking, a service should handle all the related task, such as writing all data in memory into disk and committing the transaction, etc, when a properly restart operation is performed. Ideally, all Writers should be Stable when no backups are in progress. A writer in the Stable state is ready and waiting to take a backup.
The sections below are collapsed. If a service cannot be restarted, a reboot of the machine is required. It is important to note that not all controlling services can be restarted.
Generally speaking, we will take the following steps when encountering VSS writer related issues: However, it depends on the service which is restarted. A list of currently available writers can be seen via the command line on any Windows machine.
If this does not resolve the issue, restart the computer, and retry the operation. Open a command prompt as an Administrator and run the command: This is especially useful for databases, as it allows backups to be performed while the database is active without requiring downtime.
This list is for reference use only. Run command prompt as an Administrator and run the command: A reference list of VSS Writers and their controlling services can be found below. If a Writer is listed as In-Progress or Waiting for Completion when no backups are running, the Writer may be "stuck".
Writers in the Failed or Unstable states have encountered a problem, and may need to be reset. Stuck Writers must be reset like a Failed or Unstable Writer. What Santhosh mentioned is on the right direction. This command will list all of the Writers currently available on the machine and display the state of each.Oct 13, · Find failed VSS-writers and restart service: Find each of the VSS writers in a failed state by issuing this command in an elevated command prompt - vssadmin list writers.
Make a list of all the failed VSS writers or take a screenshot. Restarting the service that controls the writer will reset the writer and, in most cases, bring it back to a stable state.
It is important to note that not all controlling services can be restarted. If a service cannot be restarted, a reboot of the machine is required. You can use the list below to find the service that corresponds to the VSS Writer in question.
Restart the corresponding windows services for the writers that are down. Use the vssadmin list writers command again to show if the vss writer. Find the failed VSS writer’s associated Service Display Name in the table below.
In mi-centre.com on the target machine, stop the VSS writers which have failed. Open task manager and hard kill the process for the failed VSS writers/services.
Apr 27, · To restart a VSS writer, you need to restart the services or process that hosts the writer. Generally speaking, we will take the following steps when encountering VSS writer related issues: Viewer and view events related to VSS" section and look for events related to the service or process that hosts the writer.
If necessary. There are instances when snapshots are failing due to an agent's VSS writers being in a failed state but it is impossible or not desirable to restart.Download