PVFS 2 File System Semantics Document

• Introduction
• Definitions
• Server Semantics
  • Permissions and permission checking
  • Removing an object that is being accessed
  • Overlapping writes
  • Handle reuse
    • Implementation
  • Symbolic links
  • Top level scheduler semantics
  
  
• Client-side library without locks or inter-client communication
  • Caching of file and directory attributes
    • Implementation
  • Caching of directory hierarchy
  • Handle reuse
    • Implementation
  • Metadata not in cache
  • Concurrent, byte-overlapping writes to a single file
    • Implementation
  • Concurrent file create
    • Implementation
  • Moving files
    • Implementation
  • Deleting a file that is being accessed
    • Implementation
  • Permissions and permission checking
  • Readdir with concurrent directory changes
  • Time synchronization
  • Computing file size
  • Non-blocking calls
  
  
• UNIX-like interface
  • ImplementingO_APPEND with and without concurrent access
  • Permissions and permission checking
  • Truncate
  • Hard links
  • Symlinks
  
  
• Misc.
  • Adding I/O servers
  • Migrating files and changing distributions
  • Metafile stuffing
  • Adding metaservers