Ошибка getvolumenameforvolumemountpoint 0x80071126

When processing a set from
component’s file
, the requester may need to recursively traverse a
directory tree
. This can necessitate the handling of
mounted folders
and
reparse points
(like links) that refer to data not located on the current volume.

To ensure proper backup and restore operations, requesters must adhere to VSS guidelines for navigating a directory tree, including following
mounted folder
s and
Reparse Points
.

To exemplify these principles, take into account the subsequent instance:

• The drive letter C:\ is assigned to volume \\?\Volume{GUID_1}.
• The path of the file set is located at C:\WriterData.
• The file set utilizes a *.dat file that has the
  file specification
  extension.
• The recursion of the file set is enabled by setting it to TRUE.
• The volume with the GUID_1 contains the directory named C:\WriterData.
• The mounted folder can be found in the directory C:\WriterData\Archive.
• The mounted folder C:\WriterData\Archive is linked with the volume \\?\Volume{GUID_2}.

Handling Mounted Folders and Reparse Points during Backup

When conducting a recursive backup under VSS, the handling of mounted folders and reparse points can be simplified to the following fundamental guidelines.

• Traversing occurs through mounted directories and reparse points.
• When a mounted folder or a reparse point is directed towards a volume, it is recommended to create a shadow copy of the respective volume.
• Mounted folders and reparse points within a volume will be visible in its corresponding shadow copy.
• The shadow copy of the volume which the mounted folder or reparse point refers to, captures the data located under it.

Taking the mentioned example into account, the requester needs to explore all the data located under C:\WriterData\Archive and its subdirectories since the recursive flag is enabled.

To include them in the shadow copy set, the requester should use IVssBackupComponents::AddToSnapshotSet to add both the volume with drive letter C:\ (\\?\Volume{GUID_1}) and the volume linked to the mounted folder C:\WriterData\Archive (\\?\Volume{GUID_2}).

The deviceObject1 is associated with the shadow copy of volume \\?\Volume{GUID_1}, where the C:\WriterData\Archive folder is mounted.

Nonetheless, the shadow copy referenced by deviceObject1 will not capture any information located in the mounted folder (data on \\?\Volume{GUID_2}). Conversely, the shadow copy of \\?\Volume{GUID_2} with a device object named deviceObject2 will contain that data.

To search for files matching C:\WriterData\*.dat, a requester who is backing up shadow copied files under C:\WriterData would utilize the path deviceObject1\WriterData.

The requester will search for files matching the pattern C:\WriterData\Archive\*.dat in deviceObject2 path, which is associated with the mounted folder C:\Writer\Archive. This is done to backup shadow copied files located under C:\WriterData\Archive, as the root directory of \\?\Volume{GUID_2} is linked with C:\Writer\Archive.

It’s important to keep in mind that a reparse point is treated similarly to a mounted folder. While the reparse point is visible in the shadow copy of the initial volume, the data located underneath it is visible in the shadow copy of the second volume.

While backing up, it is important for requesters to save details regarding the mounted folders and their associated volumes, as well as the targets and reparse points, in order to guarantee the accurate backup and restoration of all data.

Handling Mount and Reparse Points during Restore

While restoring files, the requester needs to adhere to guidelines that are not identical to the ones followed during backup, disregarding factors like alternative location mapping and the destination of the new target.

• Recursive paths are traced across mounted folders and reparse points, if necessary, as previously done.
• The restoration process involves bringing back the folders that have been mounted.
• The original paths of mounted folders and reparse points dictate their respective restoration locations.

Assuming the volume names remain unchanged during the backup and restore process, the restored reparse points and mounted folders will accurately reference the correct volumes without requiring volume re-creation.

In the previously mentioned scenario, restoring the mounted folder C:\WriterData\Archive to (\\?\Volume{GUID_1}) and the associated volume to (\\?\Volume{GUID_2}) would ensure that both the restored files and
file structure
are accurate and coherent.

Data restoration to a system with changed volume names can occur following disk crashes, which may necessitate manual system recovery and re-
create volumes
. Unfortunately, mounted folders and reparse points become invalid after restoration in such cases. To restore files and file structure on the
restored volume
, you must delete the restored mounted folders and reparse points and create new ones on the disk. Whether or not this is appropriate is at the discretion of the backup application.

Keep in mind that the mounted folder’s restore destination can potentially be occupied already, such as C:\WriterData\Archive, which may have existing files. The course of action for this scenario is left to the discretion of the backup application.

Windows SBS 2011 Standard

Quotas are turned off (have never been used).  I verified System account access to the SRM directory in  \System Volumn Information.

Log Name:      Application
Source:        SRMSVC
Date:          12/19/2012 8:06:52 AM
Event ID:      8197
Task Category: None
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      SERVER1.domain.local
Description:
File Server Resource Manager Service error: Unexpected error.

Error-specific details:
   Error: GetVolumeNameForVolumeMountPoint, 0x80071126, The file or directory is not a reparse point.

Event Xml:
<Event xmlns=»http://schemas.microsoft.com/win/2004/08/events/event»>
  <System>
    <Provider Name=»SRMSVC» />
    <EventID Qualifiers=»32772″>8197</EventID>
    <Level>2</Level>
    <Task>0</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime=»2012-12-19T16:06:52.000000000Z» />
    <EventRecordID>728815</EventRecordID>
    <Channel>Application</Channel>
    <Computer>SERVER1.domain.local</Computer>
    <Security />
  </System>
  <EventData>
    <Data>

Error-specific details:
   Error: GetVolumeNameForVolumeMountPoint, 0x80071126, The file or directory is not a reparse point.
</Data>
    <Binary>2D20436F64653A2053524D564F4C4D4330303030303132322D2043616C6C3A2053524D564F4C4D4330303030303036362D205049443A202030303030363933362D205449443A202030303030373032342D20434D443A2020433A5C57696E646F77735C73797374656D33325C737663686F7374202D6B2073726D7376637320202D20557365723A204E616D653A204E5420415554484F524954595C53595354454D2C205349443A532D312D352D313820</Binary>
  </EventData>
</Event>

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