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Avamar: VM Image level Backup fails with 10026 Error to Data Domain

Summary: Backing up a VMware Image fails with 10026 or 10055, "Invalid length failed when overwriting to a file in a container for backup"

This article applies to This article does not apply to This article is not tied to any specific product. Not all product versions are identified in this article.
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Symptoms

At the end of a VM backup with Data Domain it fails with FCOW error related to change block offset:

 

2016-11-10 19:00:39 avtar FATAL <0000>: Failed to send data to file container for FCOW, Invalid offset failed overwriting to a file in a container for backup, changed block begin offset 133272572928 is not a multiple of the fixed segment size 8192, DDR result code: 4914, desc: Invalid offset
2016-11-10 19:00:39 avtar FATAL <0000>: <10621>Failed to overwrite data to stream, due to send data failure for size 262144 for FCOW for stream index 15, DDR result code: 0 desc: Error not set
2016-11-10 19:00:39 avtar FATAL <40009>: DDR encountered errors.
2016-11-10 19:00:39 avtar Info <9772>: Starting graceful (staged) termination, DDR_ERROR event received (fatal severity) (wrap-up stage)
2016-11-10 19:00:39 avtar Info <0000>: Entering the 'final' phase of termination, DDR_ERROR need to exit)
2016-11-10 19:00:39 avtar Info <15092>: Container final statistics:
container file name: C884337993FD57BF9CB6B44AB276E861ABA0F5F8
total seg count:     22,599,398
redundant seg count: 22,560,065
2016-11-10 19:00:39 avtar FATAL <5155>: Backup aborted due to earlier errors.  No backup created on the server.


or 

2022-07-13 10:39:52 avtar FATAL <0000>: Failed to close file container for backup for FCOW, Invalid length failed when overwriting to a file in a container for backup, length 1677312 is not a multiple of the fixed segment size 8192, DDR result code: 4915, desc: Invalid length
2022-07-13 10:39:52 avtar FATAL <0000>: Failed closing write stream for FCOW, index: 33, close container failed, exit code: 157.
 

Cause

The disk size of the Virtual Machine has changed and caused the change block offset to no longer be a multiple of 8192 which is what is required for the FCOW to work with Data Domain.

Resolution

Configure the Virtual Machine and edit the settings.

Check each disk size for a decimal size.

Adjust the size of the disk by ROUNDING UP to the next whole number.

Example:
The disk appears as size 127999.3337 MB
Change this to 128000 MB

See VMware KB 2147760:  https://kb.vmware.com/s/article/2147760

Affected Products

Avamar

Products

Avamar
Article Properties
Article Number: 000063080
Article Type: Solution
Last Modified: 15 Dec 2022
Version:  5
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