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Graham Perrin

FAQ - macfuse - Google Code - Frequently Asked Questions (and Answers) - 0 views

code.google.com/...FAQ

Finder performance 2008 Filesystem in Userspace

shared by Graham Perrin on 14 Nov 08 - Cached
Graham Perrin liked it
  • I mounted a MacFUSE volume but I don't see a volume icon on the Desktop
  • I mounted a MacFUSE volume but I don't see a volume icon in the Finder's sidebar
  • sshfs isn't meant to replace things such as NFS, AFP, and SMB
  • ...5 more annotations...
  • a substitute when you don't have any remote file sharing access to a computer, but you do have sftp access
    • Graham Perrin
      Graham Perrin on 26 May 09
       
      A rich experience, with which users of Apple Finder and Mac OS X are accustomed, can not be guaranteed within the limitations of a protocol such as FTP.
    • Graham Perrin
      Graham Perrin on 26 May 09
       
      Hint: Finder does very much more than simply transfer files. Much of the Finder experience, which users (naturally) take for granted, is thanks to extensive use of extended attributes and metadata.
    • Graham Perrin
      Graham Perrin on 26 May 09
       
      Users of FTP, SFTP and SHH services: please, pay attention! The best marriage of Apple Finder and Mac OS X to a remote file system is: Apple Filing Protocol (AFP).
  • MacFUSE allows access to a volume only to the user who mounted the volume. All other users, including the superuser is denied access
  • nontrivial user-space file systems can still be complex, and their performance/behavior can depend upon numerous factors besides MacFUSE itself
  • When in doubt, feel free to post your questions on the macfuse group
  • MacFUSE itself isn't a distributed remote file system
Graham Perrin

message from conversation 'Controlling the number of fuse threads' - 0 views

groups.google.com/...1585b8031aa08e17

mount file system activity performance

shared by Graham Perrin on 16 Nov 08 - Cached
  • the moment you mount something on OS X, the operating system can throw a lot at the file system
Graham Perrin

OPTIONS - - 0 views

code.google.com/...OPTIONS

2009 Filesystem in Userspace

shared by Graham Perrin on 17 Jan 09 - Cached
  • MacFUSE provides a flexible and adaptive mechanism to handle extended attributes (including things such as Finder Info, Resource Forks, and ACLs)
  • extended attributes as Apple Double (._) files
  • all or only some extended attributes
  • ...14 more annotations...
  • To properly support ACLs, a user-space file system must correctly handle the com.apple.system.Security extended attribute
  • MacFUSE supports Mac OS X access control lists (ACLs)
  • With auto_xattr, the kernel will /always/ use ._ files
  • MacFUSE limits volume access to the user that mounted the volume
  • blanket denial is a first line of defense
  • allow_other to turn the blanket denial off
  • not a means of distributed file sharing
  • SFTP is merely a utility
  • create a true distributed file system based on MacFUSE
  • nolocalcaches makes the operating system work in an abnormal mode
  • relevant code paths may not have been well tested
  • overhead
  • file operations could end up being /much/ slower
  • SFTP provides no synchronization or locking
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