From: Alex Zhuravlev <bzzz@whamcloud.com>
Date: Mon, 30 Jul 2012 14:01:54 +0000 (+0400)
Subject: LU-1581 utils: label methods
X-Git-Tag: 2.2.93~1
X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=commitdiff_plain;h=cfef7958178b4e2981a44b1977da6577cc152ce4

LU-1581 utils: label methods

label methods for ldiskfs and zfs, used by mount utility
to update the label upon the first successful mount.

Signed-off-by: Alex Zhuravlev <bzzz@whamcloud.com>
Change-Id: Ibd5e14bd10e39d71264d15bbee42021b089091ea
Reviewed-on: http://review.whamcloud.com/3611
Tested-by: Hudson
Reviewed-by: Jinshan Xiong <jinshan.xiong@whamcloud.com>
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Oleg Drokin <green@whamcloud.com>
---

diff --git a/lustre/utils/mount_lustre.c b/lustre/utils/mount_lustre.c
index 263f5d2..4364ea4 100644
--- a/lustre/utils/mount_lustre.c
+++ b/lustre/utils/mount_lustre.c
@@ -670,6 +670,11 @@ int main(int argc, char *const argv[])
 	} else if (!mop.mo_nomtab) {
 		rc = update_mtab_entry(mop.mo_usource, mop.mo_target, "lustre",
 				       mop.mo_orig_options, 0,0,0);
+
+		/* change label from <fsname>:<index> to <fsname>-<index>
+		 * to indicate the device has been registered. */
+		if (mop.mo_ldd.ldd_flags & LDD_F_VIRGIN)
+			(void) osd_label_lustre(&mop);
         }
 
 	free(options);
diff --git a/lustre/utils/mount_utils.c b/lustre/utils/mount_utils.c
index 08e4b40..839c7f6 100644
--- a/lustre/utils/mount_utils.c
+++ b/lustre/utils/mount_utils.c
@@ -534,6 +534,32 @@ int osd_tune_lustre(char *dev, struct mount_opts *mop)
 	return ret;
 }
 
+int osd_label_lustre(struct mount_opts *mop)
+{
+	struct lustre_disk_data *ldd = &mop->mo_ldd;
+	int ret;
+
+	switch (ldd->ldd_mount_type) {
+	case LDD_MT_LDISKFS:
+	case LDD_MT_LDISKFS2:
+		ret = ldiskfs_label_lustre(mop);
+		break;
+#ifdef HAVE_ZFS_OSD
+	case LDD_MT_ZFS:
+		ret = zfs_label_lustre(mop);
+		break;
+#endif /* HAVE_ZFS_OSD */
+	default:
+		fatal();
+		fprintf(stderr, "unknown fs type %d '%s'\n",
+			ldd->ldd_mount_type, MT_STR(ldd));
+		ret = EINVAL;
+		break;
+	}
+
+	return ret;
+}
+
 int osd_init(void)
 {
 	int ret = 0;
diff --git a/lustre/utils/mount_utils.h b/lustre/utils/mount_utils.h
index acd0955..a698cb5 100644
--- a/lustre/utils/mount_utils.h
+++ b/lustre/utils/mount_utils.h
@@ -123,6 +123,7 @@ int osd_prepare_lustre(struct mkfs_opts *mop,
 		       char *default_mountopts, int default_len,
 		       char *always_mountopts, int always_len);
 int osd_tune_lustre(char *dev, struct mount_opts *mop);
+int osd_label_lustre(struct mount_opts *mop);
 int osd_init(void);
 void osd_fini(void);
 
@@ -134,6 +135,7 @@ int ldiskfs_prepare_lustre(struct mkfs_opts *mop,
 			   char *default_mountopts, int default_len,
 			   char *always_mountopts, int always_len);
 int ldiskfs_tune_lustre(char *dev, struct mount_opts *mop);
+int ldiskfs_label_lustre(struct mount_opts *mop);
 int ldiskfs_init(void);
 void ldiskfs_fini(void);
 
@@ -146,6 +148,7 @@ int zfs_prepare_lustre(struct mkfs_opts *mop,
 		       char *default_mountopts, int default_len,
 		       char *always_mountopts, int always_len);
 int zfs_tune_lustre(char *dev, struct mount_opts *mop);
+int zfs_label_lustre(struct mount_opts *mop);
 int zfs_init(void);
 void zfs_fini(void);
 #endif
diff --git a/lustre/utils/mount_utils_ldiskfs.c b/lustre/utils/mount_utils_ldiskfs.c
index a8419e9..f863ac9 100644
--- a/lustre/utils/mount_utils_ldiskfs.c
+++ b/lustre/utils/mount_utils_ldiskfs.c
@@ -974,6 +974,18 @@ int ldiskfs_tune_lustre(char *dev, struct mount_opts *mop)
 	return set_blockdev_tunables(dev, mop, 1);
 }
 
+int ldiskfs_label_lustre(struct mount_opts *mop)
+{
+	char label_cmd[PATH_MAX];
+	int rc;
+
+	snprintf(label_cmd, sizeof(label_cmd), E2LABEL" %s %s",
+		 mop->mo_source, mop->mo_ldd.ldd_svname);
+	rc = run_command(label_cmd, sizeof(label_cmd));
+
+	return rc;
+}
+
 /* return canonicalized absolute pathname, even if the target file does not
  * exist, unlike realpath */
 static char *absolute_path(char *devname)
diff --git a/lustre/utils/mount_utils_zfs.c b/lustre/utils/mount_utils_zfs.c
index 8271135..88d7a0c 100644
--- a/lustre/utils/mount_utils_zfs.c
+++ b/lustre/utils/mount_utils_zfs.c
@@ -624,6 +624,24 @@ int zfs_tune_lustre(char *dev, struct mount_opts *mop)
 	return 0;
 }
 
+int zfs_label_lustre(struct mount_opts *mop)
+{
+	zfs_handle_t *zhp;
+	int ret;
+
+	if (osd_check_zfs_setup() == 0)
+		return EINVAL;
+
+	zhp = zfs_open(g_zfs, mop->mo_source, ZFS_TYPE_FILESYSTEM);
+	if (zhp == NULL)
+		return EINVAL;
+
+	ret = zfs_set_prop_str(zhp, LDD_SVNAME_PROP, mop->mo_ldd.ldd_svname);
+	zfs_close(zhp);
+
+	return ret;
+}
+
 int zfs_init(void)
 {
 	int ret = 0;