Config.in.aufs 2.9 KB

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  1. menu "Overlay filesystems"
  2. config ADK_KERNEL_AUFS_FS
  3. bool "Aufs (Advanced multi layered unification filesystem) support"
  4. help
  5. Aufs is a stackable unification filesystem such as Unionfs,
  6. which unifies several directories and provides a merged single
  7. directory.
  8. In the early days, aufs was entirely re-designed and
  9. re-implemented Unionfs Version 1.x series. Introducing many
  10. original ideas, approaches and improvements, it becomes totally
  11. different from Unionfs while keeping the basic features.
  12. if ADK_KERNEL_AUFS_FS
  13. choice
  14. boolean "Maximum number of branches"
  15. default ADK_KERNEL_AUFS_BRANCH_MAX_127
  16. help
  17. Specifies the maximum number of branches (or member directories)
  18. in a single aufs. The larger value consumes more system
  19. resources and has a minor impact to performance.
  20. config ADK_KERNEL_AUFS_BRANCH_MAX_127
  21. bool "127"
  22. config ADK_KERNEL_AUFS_BRANCH_MAX_511
  23. bool "511"
  24. config ADK_KERNEL_AUFS_BRANCH_MAX_1023
  25. bool "1023"
  26. config ADK_KERNEL_AUFS_BRANCH_MAX_32767
  27. bool "32767"
  28. endchoice
  29. config ADK_KERNEL_AUFS_HINOTIFY
  30. bool "Use inotify to detect actions on a branch"
  31. select ADK_KERNEL_INOTIFY
  32. help
  33. If you want to modify files on branches directly, eg. bypassing aufs,
  34. and want aufs to detect the changes of them fully, then enable this
  35. option and use 'udba=inotify' mount option.
  36. It will have a negative impact to the performance.
  37. See detail in aufs.5.
  38. config ADK_KERNEL_AUFS_EXPORT
  39. bool "NFS-exportable aufs"
  40. help
  41. If you want to export your mounted aufs via NFS, then enable this
  42. option. There are several requirements for this configuration.
  43. See detail in aufs.5.
  44. config ADK_KERNEL_AUFS_SHWH
  45. bool "Show whiteouts"
  46. help
  47. If you want to make the whiteouts in aufs visible, then enable
  48. this option and specify 'shwh' mount option. Although it may
  49. sounds like philosophy or something, but in technically it
  50. simply shows the name of whiteout with keeping its behaviour.
  51. config ADK_KERNEL_AUFS_BR_RAMFS
  52. bool "Ramfs (initramfs/rootfs) as an aufs branch"
  53. help
  54. If you want to use ramfs as an aufs branch fs, then enable this
  55. Generally tmpfs is recommended.
  56. hibited them to be a branch fs by default, because
  57. s becomes unusable after switch_root or something
  58. y. If you sets initramfs as an aufs branch and boot your
  59. y switch_root, you will meet a problem easily since the
  60. initramfs may be inaccessible.
  61. ou are going to use ramfs as an aufs branch fs without
  62. oot or something, leave it N.
  63. config ADK_KERNEL_AUFS_BR_FUSE
  64. bool "Fuse fs as an aufs branch"
  65. select ADK_KERNEL_AUFS_POLL
  66. select ADK_KERNEL_FUSE_FS
  67. help
  68. If you want to use fuse-based userspace filesystem as an aufs
  69. branch fs, then enable this option.
  70. It implements the internal poll(2) operation which is
  71. implemented by fuse only (curretnly).
  72. config ADK_KERNEL_AUFS_DEBUG
  73. bool "Debug aufs"
  74. help
  75. Enable this to compile aufs internal debug code.
  76. It will have a negative impact to the performance.
  77. endif
  78. endmenu