What: /debug/aufs/si_<id>/ Date: March 2009 Contact: J. R. Okajima <hooanon05@yahoo.co.jp> Description: Under /debug/aufs, a directory named si_<id> is created per aufs mount, where <id> is a unique id generated internally. What: /debug/aufs/si_<id>/xib Date: March 2009 Contact: J. R. Okajima <hooanon05@yahoo.co.jp> Description: It shows the consumed blocks by xib (External Inode Number Bitmap), its block size and file size. When the aufs mount option 'noxino' is specified, it will be empty. About XINO files, see the aufs manual. What: /debug/aufs/si_<id>/xino0, xino1 ... xinoN Date: March 2009 Contact: J. R. Okajima <hooanon05@yahoo.co.jp> Description: It shows the consumed blocks by xino (External Inode Number Translation Table), its link count, block size and file size. When the aufs mount option 'noxino' is specified, it will be empty. About XINO files, see the aufs manual. What: /debug/aufs/si_<id>/xigen Date: March 2009 Contact: J. R. Okajima <hooanon05@yahoo.co.jp> Description: It shows the consumed blocks by xigen (External Inode Generation Table), its block size and file size. If CONFIG_AUFS_EXPORT is disabled, this entry will not be created. When the aufs mount option 'noxino' is specified, it will be empty. About XINO files, see the aufs manual.