projects / qemu.git / blame
| Commit | Line | Data |
|---|---|---|
| f27aaf4b CB |
1 | /* |
| 2 | * Ceph - scalable distributed file system | |
| 3 | * | |
| 4 | * Copyright (C) 2004-2010 Sage Weil <sage@newdream.net> | |
| 5 | * | |
| 6 | * This is free software; you can redistribute it and/or | |
| 7 | * modify it under the terms of the GNU Lesser General Public | |
| 8 | * License version 2.1, as published by the Free Software | |
| 9 | * Foundation. See file COPYING.LIB. | |
| 10 | * | |
| 11 | */ | |
| 12 | ||
| 13 | #ifndef CEPH_RBD_TYPES_H | |
| 14 | #define CEPH_RBD_TYPES_H | |
| 15 | ||
| 16 | ||
| 17 | /* | |
| 18 | * rbd image 'foo' consists of objects | |
| 19 | * foo.rbd - image metadata | |
| 20 | * foo.00000000 | |
| 21 | * foo.00000001 | |
| 22 | * ... - data | |
| 23 | */ | |
| 24 | ||
| 25 | #define RBD_SUFFIX ".rbd" | |
| 26 | #define RBD_DIRECTORY "rbd_directory" | |
| 27 | #define RBD_INFO "rbd_info" | |
| 28 | ||
| 29 | #define RBD_DEFAULT_OBJ_ORDER 22 /* 4MB */ | |
| 30 | ||
| 31 | #define RBD_MAX_OBJ_NAME_SIZE 96 | |
| 32 | #define RBD_MAX_BLOCK_NAME_SIZE 24 | |
| 33 | #define RBD_MAX_SEG_NAME_SIZE 128 | |
| 34 | ||
| 35 | #define RBD_COMP_NONE 0 | |
| 36 | #define RBD_CRYPT_NONE 0 | |
| 37 | ||
| 38 | #define RBD_HEADER_TEXT "<<< Rados Block Device Image >>>\n" | |
| 39 | #define RBD_HEADER_SIGNATURE "RBD" | |
| 40 | #define RBD_HEADER_VERSION "001.005" | |
| 41 | ||
| 42 | struct rbd_info { | |
| 43 | uint64_t max_id; | |
| 44 | } __attribute__ ((packed)); | |
| 45 | ||
| 46 | struct rbd_obj_snap_ondisk { | |
| 47 | uint64_t id; | |
| 48 | uint64_t image_size; | |
| 49 | } __attribute__((packed)); | |
| 50 | ||
| 51 | struct rbd_obj_header_ondisk { | |
| 52 | char text[40]; | |
| 53 | char block_name[RBD_MAX_BLOCK_NAME_SIZE]; | |
| 54 | char signature[4]; | |
| 55 | char version[8]; | |
| 56 | struct { | |
| 57 | uint8_t order; | |
| 58 | uint8_t crypt_type; | |
| 59 | uint8_t comp_type; | |
| 60 | uint8_t unused; | |
| 61 | } __attribute__((packed)) options; | |
| 62 | uint64_t image_size; | |
| 63 | uint64_t snap_seq; | |
| 64 | uint32_t snap_count; | |
| 65 | uint32_t reserved; | |
| 66 | uint64_t snap_names_len; | |
| 67 | struct rbd_obj_snap_ondisk snaps[0]; | |
| 68 | } __attribute__((packed)); | |
| 69 | ||
| 70 | ||
| 71 | #endif |