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Commit 3bb59ad5 authored by Alex Elder's avatar Alex Elder
Browse files

rbd: define some new format constants 



Define constant symbols related to the rbd format 2 object names.
This begins to bring this version of the "rbd_types.h" header
more in line with the current user-space version of that file.
Complete reconciliation of differences will be done at some
point later, as a separate task.

Signed-off-by: default avatarAlex Elder <elder@inktank.com>
Reviewed-by: default avatarJosh Durgin <josh.durgin@inktank.com>
parent f8d4de6e

drivers/block/rbd_types.h

+20 −5
Original line number Diff line number Diff line
@@ -15,15 +15,30 @@ 


#include <linux/types.h>



/* For format version 2, rbd image 'foo' consists of objects

 *   rbd_id.foo		- id of image

 *   rbd_header.<id>	- image metadata

 *   rbd_data.<id>.0000000000000000

 *   rbd_data.<id>.0000000000000001

 *   ...		- data

 * Clients do not access header data directly in rbd format 2.

 */



#define RBD_HEADER_PREFIX      "rbd_header."

#define RBD_DATA_PREFIX        "rbd_data."

#define RBD_ID_PREFIX          "rbd_id."



/*

 * rbd image 'foo' consists of objects

 * For format version 1, rbd image 'foo' consists of objects

 *   foo.rbd		- image metadata

 *   foo.00000000

 *   foo.00000001

 *   rb.<idhi>.<idlo>.00000000

 *   rb.<idhi>.<idlo>.00000001

 *   ...		- data

 * There is no notion of a persistent image id in rbd format 1.

 */



#define RBD_SUFFIX		".rbd"



#define RBD_DIRECTORY           "rbd_directory"

#define RBD_INFO                "rbd_info"