The following file system enhancements are now available on PUT 10.
PJ40937 – File system performance enhancement
Internal changes were made to optimize the file system locking support code and to use the locking support more efficiently in the file system. These changes address problems that might occur when many ECBs perform operations that require access to the same structures.
PJ40967 – Improved efficiency of file system state file management
z/TPF command processing was updated to limit the number of file system state files that are created. Previously, z/TPF command processing created a state file in the .tpfZfileState directory for every LNIATA that was used, which caused a large number of files to be created that were not needed. With this change, we minimize the number of files in the .tpfZfileState directory by ensuring that the ZFILE cd, ZFILE export, and ZFILE unset commands create the state files only when the command changes the current directory or another environment variable. When a file for the LNIATA does not already exist in the .tpfZfileState directory, environment variables are set based on default settings.
PJ41239 – Load without using the file system
This enhancement provides you with the ability to load system components when the file system is not available. Previously, if the file system was disabled on the z/TPF system, you might not be able to load fixes. With this change, the ZTPLD and ZOLDR LOAD commands were changed to add the NOFS parameter. When you specify the NOFS parameter, the image and E-type loaders do not use the file system when system components are loaded.
PJ40897 –TFS directory backup support
z/TPF collection support file system (TFS) directory backup support provides you with a way to back up newly created directories, as well as the root directory, in the TFS through the use of a new file attribute. The TFS maintains a backup copy of the directory contents internally and handles recovery automatically if the primary copy becomes inaccessible. By turning the backup collection file attribute on or off for a particular directory, you can enable or disable this support for that directory.
We hope you find these enhancements useful. For more information about each enhancement, see the APEDIT for each APAR and the TPF Product Information Center.