Ocfs2 devel - Sep 2013 - [PATCH 2/6] Add clustername while creating new lockspace

Signed-off-by: Goldwyn Rodrigues <rgoldwyn at suse.com>
---
 fs/ocfs2/dlmglue.c    | 2 ++
 fs/ocfs2/ocfs2.h      | 1 +
 fs/ocfs2/stack_user.c | 3 ++-
 fs/ocfs2/stackglue.c  | 9 +++++++--
 fs/ocfs2/stackglue.h  | 7 +++++++
 fs/ocfs2/super.c      | 3 +++
 6 files changed, 22 insertions(+), 3 deletions(-)

diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c
index 3a44a64..7c57de3 100644
--- a/fs/ocfs2/dlmglue.c
+++ b/fs/ocfs2/dlmglue.c
@@ -2996,6 +2996,8 @@ int ocfs2_dlm_init(struct ocfs2_super *osb)
 
 	/* for now, uuid == domain */
 	status = ocfs2_cluster_connect(osb->osb_cluster_stack,
+				       osb->osb_cluster_name,
+				       strlen(osb->osb_cluster_name),
 				       osb->uuid_str,
 				       strlen(osb->uuid_str),
 				       &lproto, ocfs2_do_node_down, osb,
diff --git a/fs/ocfs2/ocfs2.h b/fs/ocfs2/ocfs2.h
index d355e6e..ee56a3d 100644
--- a/fs/ocfs2/ocfs2.h
+++ b/fs/ocfs2/ocfs2.h
@@ -388,6 +388,7 @@ struct ocfs2_super
 	u8 osb_stackflags;
 
 	char osb_cluster_stack[OCFS2_STACK_LABEL_LEN + 1];
+	char osb_cluster_name[OCFS2_CLUSTER_NAME_LEN + 1];
 	struct ocfs2_cluster_connection *cconn;
 	struct ocfs2_lock_res osb_super_lockres;
 	struct ocfs2_lock_res osb_rename_lockres;
diff --git a/fs/ocfs2/stack_user.c b/fs/ocfs2/stack_user.c
index 1b18193..2ef6ad5 100644
--- a/fs/ocfs2/stack_user.c
+++ b/fs/ocfs2/stack_user.c
@@ -847,7 +847,8 @@ static int user_cluster_connect(struct
ocfs2_cluster_connection *conn)
 		goto out;
 	}
 
-	rc = dlm_new_lockspace(conn->cc_name, NULL, DLM_LSFL_FS, DLM_LVB_LEN,
+	rc = dlm_new_lockspace(conn->cc_name, conn->cc_cluster_name,
+			       DLM_LSFL_FS, DLM_LVB_LEN,
 			       &ocfs2_ls_ops, conn, &ops_rv, &fsdlm);
 	if (rc) {
 		ocfs2_live_connection_drop(control);
diff --git a/fs/ocfs2/stackglue.c b/fs/ocfs2/stackglue.c
index 39abf89..9acee13 100644
--- a/fs/ocfs2/stackglue.c
+++ b/fs/ocfs2/stackglue.c
@@ -309,6 +309,8 @@ int ocfs2_plock(struct ocfs2_cluster_connection *conn, u64
ino,
 EXPORT_SYMBOL_GPL(ocfs2_plock);
 
 int ocfs2_cluster_connect(const char *stack_name,
+			  const char *cluster_name,
+			  int cluster_name_len,
 			  const char *group,
 			  int grouplen,
 			  struct ocfs2_locking_protocol *lproto,
@@ -344,6 +346,8 @@ int ocfs2_cluster_connect(const char *stack_name,
 
 	memcpy(new_conn->cc_name, group, grouplen);
 	new_conn->cc_namelen = grouplen;
+	memcpy(new_conn->cc_cluster_name, cluster_name, cluster_name_len);
+	new_conn->cc_cluster_name_len = cluster_name_len;
 	new_conn->cc_recovery_handler = recovery_handler;
 	new_conn->cc_recovery_data = recovery_data;
 
@@ -386,8 +390,9 @@ int ocfs2_cluster_connect_agnostic(const char *group,
 
 	if (cluster_stack_name[0])
 		stack_name = cluster_stack_name;
-	return ocfs2_cluster_connect(stack_name, group, grouplen, lproto,
-				     recovery_handler, recovery_data, conn);
+	return ocfs2_cluster_connect(stack_name, NULL, 0, group, grouplen,
+				     lproto, recovery_handler, recovery_data,
+				     conn);
 }
 EXPORT_SYMBOL_GPL(ocfs2_cluster_connect_agnostic);
 
diff --git a/fs/ocfs2/stackglue.h b/fs/ocfs2/stackglue.h
index 1ec56fd..b46fd51 100644
--- a/fs/ocfs2/stackglue.h
+++ b/fs/ocfs2/stackglue.h
@@ -45,6 +45,9 @@ struct file_lock;
  */
 #define GROUP_NAME_MAX		64
 
+/* This shadows  OCFS2_CLUSTER_NAME_LEN */
+#define CLUSTER_NAME_MAX	16
+
 
 /*
  * ocfs2_protocol_version changes when ocfs2 does something different in
@@ -99,6 +102,8 @@ struct ocfs2_locking_protocol {
 struct ocfs2_cluster_connection {
 	char cc_name[GROUP_NAME_MAX];
 	int cc_namelen;
+	char cc_cluster_name[CLUSTER_NAME_MAX];
+	int cc_cluster_name_len;
 	struct ocfs2_protocol_version cc_version;
 	struct ocfs2_locking_protocol *cc_proto;
 	void (*cc_recovery_handler)(int node_num, void *recovery_data);
@@ -239,6 +244,8 @@ struct ocfs2_stack_plugin {
 
 /* Used by the filesystem */
 int ocfs2_cluster_connect(const char *stack_name,
+			  const char *cluster_name,
+			  int cluster_name_len,
 			  const char *group,
 			  int grouplen,
 			  struct ocfs2_locking_protocol *lproto,
diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
index 01b8516..60f3d8e 100644
--- a/fs/ocfs2/super.c
+++ b/fs/ocfs2/super.c
@@ -2239,6 +2239,9 @@ static int ocfs2_initialize_super(struct super_block *sb,
 			status = -EINVAL;
 			goto bail;
 		}
+		memcpy(osb->osb_cluster_name,
+			OCFS2_RAW_SB(di)->s_cluster_info.ci_cluster,
+			OCFS2_CLUSTER_NAME_LEN);
 	} else {
 		/* The empty string is identical with classic tools that
 		 * don't know about s_cluster_info. */
-- 
1.8.1.4


-- 
Goldwyn

On Thu, Sep 05, 2013 at 10:27:37PM -0500, Goldwyn Rodrigues
wrote:
> diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
> index 01b8516..60f3d8e 100644
> --- a/fs/ocfs2/super.c
> +++ b/fs/ocfs2/super.c
> @@ -2239,6 +2239,9 @@ static int ocfs2_initialize_super(struct super_block
*sb,
>  			status = -EINVAL;
>  			goto bail;
>  		}
> +		memcpy(osb->osb_cluster_name,
> +			OCFS2_RAW_SB(di)->s_cluster_info.ci_cluster,
> +			OCFS2_CLUSTER_NAME_LEN);
In the case of no extended cluster info (think o2cb stack) this field would
be NULL. Have you tested with o2cb to see what happens?

Btwm, since o2cb wouldn't ever use that info you could always put a dummy
value there if need be.
	--Mark

--
Mark Fasheh