From 8b9bcb0cfe1829808b0733da8b2f131d316a5f4e Mon Sep 17 00:00:00 2001
From: bobijam <bobijam>
Date: Fri, 24 Apr 2009 02:18:16 +0000
Subject: [PATCH] Branch b1_8 b=18683 i=joahnn i=sheng.yang

If no options are given, tunefs.lustre/mkfs.lustre just print info.
---
 lustre/utils/mkfs_lustre.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/lustre/utils/mkfs_lustre.c b/lustre/utils/mkfs_lustre.c
index 8b772e4..5b874aa 100644
--- a/lustre/utils/mkfs_lustre.c
+++ b/lustre/utils/mkfs_lustre.c
@@ -1094,7 +1094,7 @@ static char *convert_hostnames(char *s1)
                 sep = *s2;
                 *s2 = '\0';
                 nid = libcfs_str2nid(s1);
-                
+
                 if (nid == LNET_NID_ANY) {
                         fprintf(stderr, "%s: Can't parse NID '%s'\n", progname, s1);
                         free(converted);
@@ -1109,7 +1109,7 @@ static char *convert_hostnames(char *s1)
                         free(converted);
                         return NULL;
                 }
-                                        
+
                 c += snprintf(c, left, "%s%c", libcfs_nid2str(nid), sep);
                 left = converted + MAXNIDSTR - c;
                 s1 = s2 + 1;
@@ -1338,6 +1338,10 @@ int parse_opts(int argc, char *const argv[], struct mkfs_opts *mop,
                 return EINVAL;
         }
 
+        /* single argument: <device> */
+        if (argc == 2)
+                ++print_only;
+
 #ifndef TUNEFS
         if (mop->mo_ldd.ldd_flags & LDD_F_SV_TYPE_MDT && 0 == upcall) {
                 if (access("/usr/sbin/l_getgroups", R_OK | X_OK)) {
-- 
1.8.3.1