[PATCH v2] dlm: Make dismatch error message more clear

From: Gang He
Date: Wed May 17 2017 - 22:40:18 EST

This change will try to make this error message more clear,
since the upper applications (e.g. ocfs2) invoke dlm_new_lockspace
to create a new lockspace with passing a cluster name. Sometimes,
dlm_new_lockspace return failure while two cluster names dismatch,
the user is a little confused since this line error message is not
enough obvious.

Signed-off-by: Gang He <ghe@xxxxxxxx>
fs/dlm/lockspace.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/dlm/lockspace.c b/fs/dlm/lockspace.c
index 91592b7..b03d808 100644
--- a/fs/dlm/lockspace.c
+++ b/fs/dlm/lockspace.c
@@ -455,7 +455,8 @@ static int new_lockspace(const char *name, const char *cluster,

if (dlm_config.ci_recover_callbacks && cluster &&
strncmp(cluster, dlm_config.ci_cluster_name, DLM_LOCKSPACE_LEN)) {
- log_print("dlm cluster name %s mismatch %s",
+ log_print("dlm cluster name '%s' does not match "
+ "the application cluster name '%s'",
dlm_config.ci_cluster_name, cluster);
error = -EBADR;
goto out;