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Commit ed95b21a authored by Ilya Dryomov's avatar Ilya Dryomov
Browse files

rbd: support for exclusive-lock feature 



Add basic support for RBD_FEATURE_EXCLUSIVE_LOCK feature.  Maintenance
operations (resize, snapshot create, etc) are offloaded to librbd via
returning -EOPNOTSUPP - librbd should request the lock and execute the
operation.

Signed-off-by: default avatarIlya Dryomov <idryomov@gmail.com>
Reviewed-by: default avatarMike Christie <mchristi@redhat.com>
Tested-by: default avatarMike Christie <mchristi@redhat.com>
parent 99d16943

drivers/block/rbd.c

+796 −16

File changed.

Preview size limit exceeded, changes collapsed.

drivers/block/rbd_types.h

+11 −0
Original line number Original line Diff line number Diff line
@@ -28,6 +28,17 @@ 
#define RBD_DATA_PREFIX        "rbd_data."

#define RBD_DATA_PREFIX        "rbd_data."

#define RBD_ID_PREFIX          "rbd_id."

#define RBD_ID_PREFIX          "rbd_id."





#define RBD_LOCK_NAME          "rbd_lock"

#define RBD_LOCK_TAG           "internal"

#define RBD_LOCK_COOKIE_PREFIX "auto"



enum rbd_notify_op {

	RBD_NOTIFY_OP_ACQUIRED_LOCK      = 0,

	RBD_NOTIFY_OP_RELEASED_LOCK      = 1,

	RBD_NOTIFY_OP_REQUEST_LOCK       = 2,

	RBD_NOTIFY_OP_HEADER_UPDATE      = 3,

};



/*

/*

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

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

 *   foo.rbd		- image metadata

 *   foo.rbd		- image metadata

net/ceph/ceph_strings.c

+1 −0
Original line number Original line Diff line number Diff line
@@ -15,6 +15,7 @@ const char *ceph_entity_type_name(int type) 
	default: return "unknown";

	default: return "unknown";

	}

	}

}

}

EXPORT_SYMBOL(ceph_entity_type_name);





const char *ceph_osd_op_name(int op)

const char *ceph_osd_op_name(int op)

{

{