X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Futils%2Fmount_lustre.c;h=234dbbbf1474c4edd4f367f52d6225800688de36;hb=702258c220a8d9224413f259af4a21dda9950278;hp=9be94a622afe77547f60815b694ddf6e61afca93;hpb=6a6561972406043efe41ae43b64fd278f360a4b9;p=fs%2Flustre-release.git

diff --git a/lustre/utils/mount_lustre.c b/lustre/utils/mount_lustre.c
index 9be94a6..234dbbb 100644
--- a/lustre/utils/mount_lustre.c
+++ b/lustre/utils/mount_lustre.c
@@ -27,7 +27,7 @@
  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
  *
- * Copyright (c) 2011, 2012, Whamcloud, Inc.
+ * Copyright (c) 2011, 2012, Intel Corporation.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
@@ -42,6 +42,7 @@
 #ifndef _GNU_SOURCE
 #define _GNU_SOURCE
 #endif
+#include "mount_utils.h"
 #include <stdlib.h>
 #include <stdio.h>
 #include <unistd.h>
@@ -52,7 +53,19 @@
 #include <lustre_ver.h>
 #include <ctype.h>
 #include <limits.h>
-#include "mount_utils.h"
+#if LUSTRE_VERSION_CODE > OBD_OCD_VERSION(2, 10, 51, 0)
+/*
+ * LU-1783
+ * We only #include a kernel level include file here because
+ * important MS_ flag #defines are missing from the SLES version
+ * of sys/mount.h
+ * In the future if SLES updates sys/mount.h to have a more complete
+ * set of flag #defines we should stop including linux/fs.h
+ */
+#warn remove kernel include
+#else
+#include <linux/fs.h>
+#endif
 
 #define MAXOPT 4096
 #define MAX_RETRIES 99
@@ -254,10 +267,21 @@ int parse_options(struct mount_opts *mop, char *orig_options, int *flagp)
                 }
         }
 #ifdef MS_STRICTATIME
-                /* set strictatime to default if NOATIME or RELATIME
-                   not given explicit */
-        if (!(*flagp & (MS_NOATIME | MS_RELATIME)))
-                *flagp |= MS_STRICTATIME;
+#if LUSTRE_VERSION_CODE > OBD_OCD_VERSION(2, 10, 51, 0)
+/*
+ * LU-1783
+ * In the future when upstream fixes land in all supported kernels
+ * we should stop forcing MS_STRICTATIME in lustre mounts.
+ * We override the kernel level default of MS_RELATIME for now
+ * due to a kernel vfs level bug in atime updates that fails
+ * to reset timestamps from the future.
+ */
+#warn remove MS_STRICTATIME override
+#endif
+	/* set strictatime to default if NOATIME or RELATIME
+	   not given explicit */
+	if (!(*flagp & (MS_NOATIME | MS_RELATIME)))
+		*flagp |= MS_STRICTATIME;
 #endif
         strcpy(orig_options, options);
         free(options);
@@ -364,8 +388,6 @@ static int parse_ldd(char *source, struct mount_opts *mop, char *options)
 		append_option(options, "virgin");
 	if (ldd->ldd_flags & LDD_F_WRITECONF)
 		append_option(options, "writeconf");
-	if (ldd->ldd_flags & LDD_F_IAM_DIR)
-		append_option(options, "iam");
 	if (ldd->ldd_flags & LDD_F_NO_PRIMNODE)
 		append_option(options, "noprimnode");
 
@@ -473,8 +495,6 @@ static int parse_opts(int argc, char *const argv[], struct mount_opts *mop)
 	 * symbolic link for instance
 	 */
 	if (realpath(mop->mo_usource, real_path) != NULL) {
-		mop->mo_usource = strdup(real_path);
-
 		ptr = strrchr(real_path, '/');
 		if (ptr && strncmp(ptr, "/dm-", 4) == 0 && isdigit(*(ptr + 4))) {
 			snprintf(path, sizeof(path), "/sys/block/%s/dm/name", ptr+1);
@@ -487,6 +507,7 @@ static int parse_opts(int argc, char *const argv[], struct mount_opts *mop)
 				fclose(f);
 			}
 		}
+		mop->mo_usource = strdup(real_path);
 	}
 
 	ptr = strstr(mop->mo_usource, ":/");
@@ -638,6 +659,9 @@ int main(int argc, char *const argv[])
 
                 fprintf(stderr, "%s: mount %s at %s failed: %s\n", progname,
 			mop.mo_usource, mop.mo_target, strerror(errno));
+		if (errno == EBUSY)
+			fprintf(stderr, "Is the backend filesystem mounted?\n"
+					"Check /etc/mtab and /proc/mounts\n");
                 if (errno == ENODEV)
                         fprintf(stderr, "Are the lustre modules loaded?\n"
                                 "Check /etc/modprobe.conf and "