Restore of NDMP, NetApp restores files with 0 KB. See log messages: "Find a chunk in inode 4. Ski (4042477)

Date -05/11
Affected Product Version -
Affected Module & Version - NDMP -any version
OS Version - NetApp OnTap version 7.3.1 and earlier.
Application Information -


Description: When running a restore of a NetApp backup, many files are restored with 0 KB as the size.

The NetVault logs may have many messages that end with:

"Find a chunk in inode X. Skipping... "

This is not a NetVault problem. This is a known NetApp Bug. The NetApp bug id is: 282632

The summary of the bug is:
Restore could print "Find a chunk in inode 4. Skipping..." or "Find a chunk in inode 3. Skipping...".

Bug Severity 2 - System barely usable
Bug Status Fixed
Product Data ONTAP
Bug Type Backup/Restore
Description
Formatted The root cause of this issue is the truncation of a value by C compilers while evaluating an expression carrying multiple data types. This happens when dump is recording the size of offsetmap file and aclfile in tape headers. Due to this, during restore, these files are only read partially till the truncated size.
The remaining portion of these files are simply skipped. This leads to messages like the above being printed on console.

Workaround
Formatted No workaround.

Notes
Formatted The problem is now fixed. Please visit NOW site Bugs OnLine for fix release
information.

Related Solutions
Fixed-In Version •Data ONTAP 7.3.2P3 (First Fixed) - Fixed
•Data ONTAP 7.3.3 (GD) - Fixed
•Data ONTAP 7.3.5.1 (GA) - Fixed
•Data ONTAP 8.0.1 (GA) - Fixed
•Data ONTAP 8.0.2RC1 (RC) - Fixed
A complete list of releases where this bug is fixed is available here.

Therefor the only solution is to upgrade the version of OnTap to prevent the problem from happening again in the future. There is no work around for the problem in OnTap version 7.3.1 or older.