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/*
* Ceph - scalable distributed file system
*
* Copyright (C) 2004-2010 Sage Weil <sage@newdream.net>
*
* This is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software
* Foundation. See file COPYING.LIB.
*
*/
#ifndef CEPH_RBD_TYPES_H
#define CEPH_RBD_TYPES_H
/*
* rbd image 'foo' consists of objects
* foo.rbd - image metadata
* foo.00000000
* foo.00000001
* ... - data
*/
#define RBD_SUFFIX ".rbd"
#define RBD_DIRECTORY "rbd_directory"
#define RBD_INFO "rbd_info"
#define RBD_DEFAULT_OBJ_ORDER 22 /* 4MB */
#define RBD_MAX_OBJ_NAME_SIZE 96
#define RBD_MAX_BLOCK_NAME_SIZE 24
#define RBD_MAX_SEG_NAME_SIZE 128
#define RBD_COMP_NONE 0
#define RBD_CRYPT_NONE 0
#define RBD_HEADER_TEXT "<<< Rados Block Device Image >>>\n"
#define RBD_HEADER_SIGNATURE "RBD"
#define RBD_HEADER_VERSION "001.005"
struct rbd_info {
uint64_t max_id;
} __attribute__ ((packed));
struct rbd_obj_snap_ondisk {
uint64_t id;
uint64_t image_size;
} __attribute__((packed));
struct rbd_obj_header_ondisk {
char text[40];
char block_name[RBD_MAX_BLOCK_NAME_SIZE];
char signature[4];
char version[8];
struct {
uint8_t order;
uint8_t crypt_type;
uint8_t comp_type;
uint8_t unused;
} __attribute__((packed)) options;
uint64_t image_size;
uint64_t snap_seq;
uint32_t snap_count;
uint32_t reserved;
uint64_t snap_names_len;
struct rbd_obj_snap_ondisk snaps[0];
} __attribute__((packed));
#endif
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