Invalid MSDOS Function error on Windows copying a file from a UNIX or Linux VOB
This technote discusses why the error, Invalid MSDOS Function occurs when copying data from an IBM® Rational® ClearCase® VOB stored on UNIX® or Linux® to a Microsoft® Windows® client.
When copying files from a dynamic view in Windows Explorer to a location on the local filesystem (or outside of a ClearCase view), the following error occurs:
Invalid MSDOS function
In the ClearCase error logs, several errors similar to the following are seen:
Null VOB handle passed to libvob routine.
Internal Error detected in "./..\map_db.c" line 528
Note: This occurs intermittently, and for different files with different users.
This problem is in the Windows to UNIX or Linux interoperation environment.
The mnode settings are set higher than 800 for the client machines in question.
Resolving the problem
Adjust the mnode settings as follows:
- Go to Start (> Settings) > Control Panel > double-click the ClearCase icon > click the MVFS Performance tab:
- If the value in either of the following fields is set to a value higher than 800, change the existing value to 800 and reboot:
- Maximum number of mnodes to keep on the VOB free list
- Maximum number of mnodes to keep on the cleartext free list
|Software Development||Rational ClearCase||Interop|