Backup of Deduplication Storage folder via shadow copy components to tape fails with "A failure occurred reading an object"

Article: 100010975
Last Published: 2020-07-24
Ratings: 0 0
Product(s): Backup Exec

Problem

V-79-57344-65247 - Backup of Deduplication Storage folder via shadow copy components to tape fails with  "A failure occurred reading an object"

Error Message

Error in Job Log:

V-79-57344-65247 - A failure occurred reading an object.
WARNING: "\\ServerName\Shadow?Copy?Components\User?Data\Backup
Exec Deduplication Storage\Storage" is a corrupt file. This file cannot verify.

Or

Errors observed in the Job Log :

Final Error Code: a000fed1 HEX (0xa000fed1 HEX) or e000fed1 HEX (0xe000fed1 HEX)
Final Error Description: "A failure occurred querying the Writer status."
Final Error Category: Resource Errors
Error Text In Job Log: "AOFO: Initialization failure on: "Shadow?Copy?Components". Advanced Open File Option used: Microsoft Volume Shadow Copy Service (VSS)

For more information regarding this error refer to link V-79-57344-65233

Error in the SGMON debug Log:

PVLSVR:   [10/15/13 09:53:13] [4644]     10/15/13 09:53:13.274
PvlEntityDatabase::UpdateEntity() : SUCCESS!
BEREMOTE: [10/15/13 09:53:13] [2688]     2013-10-15T09:53:13.319
[fsys\shadow]        - Status FS_STREAM_CORRUPT (0xE000FE36) for Component
Storage in SHADOW::ReadComponent
BENGINE:  [10/15/13 09:53:13] [3808]     2013-10-15T09:53:13.347
[server]             - BackupJob::Failed was called for BSD '\\Servername\Shadow?Copy?Components'
BENGINE:  [10/15/13 09:53:13] [3808]     2013-10-15T09:53:13.355
[server]             - BackupJob::Failed was called for BSD '\\ServerName\Shadow?Copy?Components'
BEREMOTE: [10/15/13 09:53:15] [2688]     2013-10-15T09:53:14.640
[fsys\shadow]        - Informational: Closing Component 'Storage'
BEREMOTE: [10/15/13 09:53:15] [2688]     2013-10-15T09:53:14.655
[fsys\shadow]        - Informational: calling
IVssBackupComponents::SetBackupSucceeded with status 
'FS_READING_OBJECT_FAILURE (0xE000FEDF)' for Component 'Deduplication Storage'
in SHADOW::CloseComponent

Cause

The VSS Snapshot may get deleted due to high IO when Deduplication Storage folder starts to process queue. It may happen that some backups are also running during the time when Deduplication Folder is being backed up and can add to the I/O load on the system.

Solution

Best Practices while Backing up a Deduplication Folder via Shadow Copy Components :

•Reduce the system or I/O load and retry the operation, or schedule other operations during the least busy periods.

While backing up the Deduplication Storage Folder if there are backups running to it and queue processing starts to run on Dedupe folder, it will increase the IO Load. To reduce I/O backup Jobs targeted
to Deduplication Storage Folder can be run at a different time when the backup of Deduplication Storage Folder is not running.

 

References

UMI : V-79-57344-65247 Etrack : 3348851

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