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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.
*
*/
#ifndef CEPH_RBD_TYPES_H
#define CEPH_RBD_TYPES_H
#if defined(__linux__)
#include <linux/types.h>
#elif defined(__FreeBSD__)
#include <sys/types.h>
#endif
/* New-style rbd image 'foo' consists of objects
* rbd_header.foo - image metadata
* rbd_data.<id>.00000000
* rbd_data.<id>.00000001
* ... - data
*/
#define RBD_HEADER_PREFIX "rbd_header."
#define RBD_DATA_PREFIX "rbd_data."
#define RBD_FEATURES_INCOMPATIBLE 0
#define RBD_FEATURES_ALL 0
/*
* old-style rbd image 'foo' consists of objects
* foo.rbd - image metadata
* rb.<idhi>.<idlo>.00000000
* rb.<idhi>.<idlo>.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_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 {
__le64 max_id;
} __attribute__ ((packed));
struct rbd_obj_snap_ondisk {
__le64 id;
__le64 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 {
__u8 order;
__u8 crypt_type;
__u8 comp_type;
__u8 unused;
} __attribute__((packed)) options;
__le64 image_size;
__le64 snap_seq;
__le32 snap_count;
__le32 reserved;
__le64 snap_names_len;
struct rbd_obj_snap_ondisk snaps[0];
} __attribute__((packed));
#endif
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