OpenAFS on Windows: A Status Report Jeffrey Altman The OpenAFS Project 26 March 2014.

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OpenAFS on Windows: A Status Report Jeffrey Altman The OpenAFS Project 26 March 2014

SMB Windows is dead 1.6 Windows releases were halted after Windows releases were halted after No fix for SMB 1.x Authentication Bug in Windows 7 and beyond No fix for SMB 1.x Authentication Bug in Windows 7 and beyond –Microsoft fixed it but insufficient demand from community for them to release it

1.7 News is current is current –13 releases since Edinburgh conference Windows 8.1 and Server 2012 R2 Windows 8.1 and Server 2012 R2

Symlink Processing Symlink Reparse Points compatible with NTFS and ReFS Symlink Reparse Points compatible with NTFS and ReFS Symlinks can be copied to/from \\AFS Symlinks can be copied to/from \\AFS\\AFS –Robocopy /SL option

Cygwin Interoperability As of Cygwin and OpenAFS , Cygwin recognizes //afs As of Cygwin and OpenAFS , Cygwin recognizes //afs –ln –s now creates symlinks Prior versions of Cygwin Prior versions of Cygwin –Reported symlinks as directories or files –Copied target instead of link –Reported incorrect size/free space

Symlinks on Windows on-windows.html on-windows.html on-windows.html on-windows.html.NET and Java (pre-1.6).NET and Java (pre-1.6) –not Reparse Point aware –Read File Sizes and Attributes incorrectly Side Effect: Side Effect: –Reads of Symlinks to Files truncates data OpenAFS Reparse Point Policies OpenAFS Reparse Point Policies –Expose Symlinks as x-volume hardlinks

Anti-malware Headaches Trend Micro 10.4 and prior releases should be avoided Trend Micro 10.4 and prior releases should be avoided Workaround for TM related deadlocks produced other deadlocks Workaround for TM related deadlocks produced other deadlocks OpenAFS replaced fix with an alternative OpenAFS replaced fix with an alternative –Safe for TM 10.5 and above

Windows XP / Server 2003 OpenAFS and prior experience data corruption due to a bug in the Windows IO Manager OpenAFS and prior experience data corruption due to a bug in the Windows IO Manager –Multiple outstanding Synchronous Writes must not be issued to the same file Workaround in Workaround in –Do not defer writes that cannot be completed

Released Today Performance optimizations Performance optimizations –Cache VL_GetAddrsU responses XP cannot use secure bindings of devices to MUP XP cannot use secure bindings of devices to MUP –Prevents “limited” users from accessing \\AFS \\AFS Windows Advanced Firewall autoconfiguration changes Windows Advanced Firewall autoconfiguration changes

Windows XP End of Life 8 April April 2014 –No more updates for XP from Microsoft –No more Microsoft Anti-malware Engine Updates for XP

OPENAFS ON WINDOWS STATUS REPORT