LU-11736 utils: don't set max_sectors_kb on MDT/MGT

[fs/lustre-release.git] / lustre / utils / libmount_utils_ldiskfs.c

diff --git a/lustre/utils/libmount_utils_ldiskfs.c b/lustre/utils/libmount_utils_ldiskfs.c
index 5fece46..c1f79ae 100644 (file)
--- a/lustre/utils/libmount_utils_ldiskfs.c
+++ b/lustre/utils/libmount_utils_ldiskfs.c
@@ -1238,6 +1238,13 @@ static int tune_block_dev(const char *src, struct mount_opts *mop)
        char *real_sys_path = NULL;
        int rc;
 
+       /*
+        * Don't apply block device tuning for MDT or MGT devices,
+        * since we don't need huge IO sizes to get good performance
+        */
+       if (!IS_OST(&mop->mo_ldd))
+               return 0;
+
        if (src == NULL)
                return EINVAL;
 
@@ -1267,8 +1274,7 @@ static int tune_block_dev(const char *src, struct mount_opts *mop)
                        goto have_whole_dev;
 
                if (verbose)
-                       fprintf(stderr,
-                               "warning: cannot access '%s': %s\n",
+                       fprintf(stderr, "warning: cannot access '%s': %s\n",
                                partition_path, strerror(errno));
                rc = errno;
                goto out;