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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. help
  32. If you want to modify files on branches directly, eg. bypassing aufs,
  33. and want aufs to detect the changes of them fully, then enable this
  34. option and use 'udba=inotify' mount option.
  35. It will have a negative impact to the performance.
  36. See detail in aufs.5.
  37. config ADK_KERNEL_AUFS_EXPORT
  38. bool "NFS-exportable aufs"
  39. help
  40. If you want to export your mounted aufs via NFS, then enable this
  41. option. There are several requirements for this configuration.
  42. See detail in aufs.5.
  43. config ADK_KERNEL_AUFS_SHWH
  44. bool "Show whiteouts"
  45. help
  46. If you want to make the whiteouts in aufs visible, then enable
  47. this option and specify 'shwh' mount option. Although it may
  48. sounds like philosophy or something, but in technically it
  49. simply shows the name of whiteout with keeping its behaviour.
  50. config ADK_KERNEL_AUFS_BR_RAMFS
  51. bool "Ramfs (initramfs/rootfs) as an aufs branch"
  52. help
  53. If you want to use ramfs as an aufs branch fs, then enable this
  54. Generally tmpfs is recommended.
  55. hibited them to be a branch fs by default, because
  56. s becomes unusable after switch_root or something
  57. y. If you sets initramfs as an aufs branch and boot your
  58. y switch_root, you will meet a problem easily since the
  59. initramfs may be inaccessible.
  60. ou are going to use ramfs as an aufs branch fs without
  61. oot or something, leave it N.
  62. config ADK_KERNEL_AUFS_BR_FUSE
  63. bool "Fuse fs as an aufs branch"
  64. select ADK_KERNEL_AUFS_POLL
  65. select ADK_KERNEL_FUSE_FS
  66. help
  67. If you want to use fuse-based userspace filesystem as an aufs
  68. branch fs, then enable this option.
  69. It implements the internal poll(2) operation which is
  70. implemented by fuse only (curretnly).
  71. config ADK_KERNEL_AUFS_DEBUG
  72. bool "Debug aufs"
  73. help
  74. Enable this to compile aufs internal debug code.
  75. It will have a negative impact to the performance.
  76. endif
  77. endmenu