Sun Storage 7000 Unified Storage System: How To check NTFS 8dot3 status for ZFSSA

Asset ID:	1-71-1513733.1
Update Date:	2017-10-05
Keywords:

Solution Type Technical Instruction Sure

Solution 1513733.1 : Sun Storage 7000 Unified Storage System: How To check NTFS 8dot3 status for ZFSSA

Applies to:

Sun ZFS Storage 7420 - Version Not Applicable and later
Sun ZFS Storage 7320 - Version Not Applicable and later
Sun ZFS Storage 7120 - Version Not Applicable and later
Sun Storage 7410 Unified Storage System - Version Not Applicable and later
Sun Storage 7310 Unified Storage System - Version Not Applicable and later
Information in this document applies to any platform.

Goal

8dot3 or 8.3 or Short Filenames are used by old applications - mostly DOS based. Though not required, for backward compatibility purposes these filenames are still supported.

The file or directory names can be shortened and accessed if 8dot3 is enabled.

It is named as 8dot3 because of the naming convention that can be given to a file as 8 characters long then dot "." followed by a 3 character extension.

Though this convention is a limitation and not used these days - some applications may use it. However, some applications may need it to be disabled as a best practice.

http://technet.microsoft.com/en-us/library/ff633453(v=ws.10).aspx
http://support.microsoft.com/kb/121007

This document provides a brief procedure to verify whether the 8dot3 naming convention is being supported by ZFSSA shares accessed on Windows clients

Fix

Verify 8dot3 on Windows machine for CIFS/SMB:

CIFS/SMB client : Windows 7
CIFS server: NAS 7000 ( firmware 2011.04.24.3.0,1-1.19 )

Right click on cmd.exe and Run as Administrator then run the following :

C:\>fsutil behavior query disable8dot3 c:
The volume state for Disable8dot3 is 0 (8dot3 name creation is enabled).
The registry state of NtfsDisable8dot3NameCreation is 2, the default (Volume level setting).
Based on the above two settings, 8dot3 name creation is enabled on c:.

Z:\>dir
Volume in drive Z is export
Volume Serial Number is 82DE-42DA

Directory of Z:\

12/01/2012 11:54 AM <DIR> .
12/01/2012 11:54 AM <DIR> ..
12/01/2012 11:54 AM 0 New Text Document.txt
1 File(s) 0 bytes
2 Dir(s) 9,805,367,481,344 bytes free

Z:\>echo "This is a test file" > 123456789.tmp

Z:\>type 123456~1.tmp
The system cannot find the file specified. <<<<<<<<<<<<<

Z:\>type 123456~1.tmp
The system cannot find the file specified. <<<<<<<<<<<<<<<<<<

Z:\>

Verify 8dot3 on Windows machine for NFS :

K:\>fsutil fsinfo volumeinfo k:
Volume Name :
Volume Serial Number : 0x10044
Max Component Length : 255
File System Name : NFS
Preserves Case of filenames

K:\>echo "This is a test file" > 123456789.tmp

K:\>type 123456~1.tmp
The system cannot find the file specified.

K:\>

If the above behavior is found, then 8dot3 is disabled over CIFS/SMB and NFS on Windows system.

References

<NOTE:1277159.1> - "DisableNtfs8dot3" Does Not Correct the Error "The weblayout directory is on a filesystem with 8dot3 semantics"

Attachments

This solution has no attachment