ceph/src/include/rbd/features.h

   1 #ifndef CEPH_RBD_FEATURES_H
   2 #define CEPH_RBD_FEATURES_H
   3
   4 #define RBD_FEATURE_LAYERING            (1ULL<<0)
   5 #define RBD_FEATURE_STRIPINGV2          (1ULL<<1)
   6 #define RBD_FEATURE_EXCLUSIVE_LOCK      (1ULL<<2)
   7 #define RBD_FEATURE_OBJECT_MAP          (1ULL<<3)
   8 #define RBD_FEATURE_FAST_DIFF           (1ULL<<4)
   9 #define RBD_FEATURE_DEEP_FLATTEN        (1ULL<<5)
  10 #define RBD_FEATURE_JOURNALING          (1ULL<<6)
  11 #define RBD_FEATURE_DATA_POOL           (1ULL<<7)
  12
  13 #define RBD_FEATURES_DEFAULT             (RBD_FEATURE_LAYERING | \
  14                                          RBD_FEATURE_EXCLUSIVE_LOCK | \
  15                                          RBD_FEATURE_OBJECT_MAP | \
  16                                          RBD_FEATURE_FAST_DIFF | \
  17                                          RBD_FEATURE_DEEP_FLATTEN)
  18
  19 #define RBD_FEATURE_NAME_LAYERING        "layering"
  20 #define RBD_FEATURE_NAME_STRIPINGV2      "striping"
  21 #define RBD_FEATURE_NAME_EXCLUSIVE_LOCK  "exclusive-lock"
  22 #define RBD_FEATURE_NAME_OBJECT_MAP      "object-map"
  23 #define RBD_FEATURE_NAME_FAST_DIFF       "fast-diff"
  24 #define RBD_FEATURE_NAME_DEEP_FLATTEN    "deep-flatten"
  25 #define RBD_FEATURE_NAME_JOURNALING      "journaling"
  26 #define RBD_FEATURE_NAME_DATA_POOL       "data-pool"
  27
  28 /// features that make an image inaccessible for read or write by
  29 /// clients that don't understand them
  30 #define RBD_FEATURES_INCOMPATIBLE       (RBD_FEATURE_LAYERING       | \
  31                                          RBD_FEATURE_STRIPINGV2     | \
  32                                          RBD_FEATURE_DATA_POOL)
  33
  34 /// features that make an image unwritable by clients that don't understand them
  35 #define RBD_FEATURES_RW_INCOMPATIBLE    (RBD_FEATURES_INCOMPATIBLE  | \
  36                                          RBD_FEATURE_EXCLUSIVE_LOCK | \
  37                                          RBD_FEATURE_OBJECT_MAP     | \
  38                                          RBD_FEATURE_FAST_DIFF      | \
  39                                          RBD_FEATURE_DEEP_FLATTEN   | \
  40                                          RBD_FEATURE_JOURNALING)
  41
  42 #define RBD_FEATURES_ALL                (RBD_FEATURE_LAYERING       | \
  43                                          RBD_FEATURE_STRIPINGV2     | \
  44                                          RBD_FEATURE_EXCLUSIVE_LOCK | \
  45                                          RBD_FEATURE_OBJECT_MAP     | \
  46                                          RBD_FEATURE_FAST_DIFF      | \
  47                                          RBD_FEATURE_DEEP_FLATTEN   | \
  48                                          RBD_FEATURE_JOURNALING     | \
  49                                          RBD_FEATURE_DATA_POOL)
  50
  51 /// features that may be dynamically enabled or disabled
  52 #define RBD_FEATURES_MUTABLE            (RBD_FEATURE_EXCLUSIVE_LOCK | \
  53                                          RBD_FEATURE_OBJECT_MAP     | \
  54                                          RBD_FEATURE_FAST_DIFF      | \
  55                                          RBD_FEATURE_JOURNALING)
  56
  57 /// features that may be dynamically disabled
  58 #define RBD_FEATURES_DISABLE_ONLY       (RBD_FEATURE_DEEP_FLATTEN)
  59
  60 /// features that only work when used with a single client
  61 /// using the image for writes
  62 #define RBD_FEATURES_SINGLE_CLIENT (RBD_FEATURE_EXCLUSIVE_LOCK | \
  63                                     RBD_FEATURE_OBJECT_MAP     | \
  64                                     RBD_FEATURE_FAST_DIFF      | \
  65                                     RBD_FEATURE_JOURNALING)
  66
  67 #endif