On 06/25/2019 10:41 PM, Ilya Dryomov wrote:
This time for rbd object map. Object maps are limited in size to
256000000 objects, two bits per object.
Signed-off-by: Ilya Dryomov <idryomov@xxxxxxxxx>
Reviewed-by: Dongsheng Yang <dongsheng.yang@xxxxxxxxxxxx>
---
include/linux/ceph/libceph.h | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/include/linux/ceph/libceph.h b/include/linux/ceph/libceph.h
index 337d5049ff93..0ae60b55e55a 100644
--- a/include/linux/ceph/libceph.h
+++ b/include/linux/ceph/libceph.h
@@ -84,11 +84,13 @@ struct ceph_options {
#define CEPH_MSG_MAX_MIDDLE_LEN (16*1024*1024)
/*
- * Handle the largest possible rbd object in one message.
+ * The largest possible rbd data object is 32M.
+ * The largest possible rbd object map object is 64M.
+ *
* There is no limit on the size of cephfs objects, but it has to obey
* rsize and wsize mount options anyway.
*/
-#define CEPH_MSG_MAX_DATA_LEN (32*1024*1024)
+#define CEPH_MSG_MAX_DATA_LEN (64*1024*1024)
#define CEPH_AUTH_NAME_DEFAULT "guest"
