From: Nathan Rutman <nathan.rutman@oracle.com>
Date: Fri, 13 Aug 2010 16:47:47 +0000 (+0400)
Subject: b=22464 add writeconf as mount option (includes bz 23228)
X-Git-Tag: 2.0.51.0~76
X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=commitdiff_plain;h=868565282f0234335e5afe13990bb8571049bdc0;hp=2fe8b2600cd7aea21149fbb9d0829129a274a472

b=22464 add writeconf as mount option (includes bz 23228)

i=alexg
i=adilger
---

diff --git a/lustre/include/lustre_disk.h b/lustre/include/lustre_disk.h
index 56ac7b0..0915d80 100644
--- a/lustre/include/lustre_disk.h
+++ b/lustre/include/lustre_disk.h
@@ -75,11 +75,11 @@
 #define LDD_F_NEED_INDEX    0x0010
 /** never registered */
 #define LDD_F_VIRGIN        0x0020
-/** update the config logs for this server*/
+/** update the config logs for this server */
 #define LDD_F_UPDATE        0x0040
 /** rewrite the LDD */
 #define LDD_F_REWRITE_LDD   0x0080
-/** regenerate all logs for this fs */
+/** regenerate config logs for this fs or server */
 #define LDD_F_WRITECONF     0x0100
 /** COMPAT_14 */
 #define LDD_F_UPGRADE14     0x0200
@@ -194,6 +194,7 @@ struct lustre_mount_data {
                                         no other services */
 #define LMD_FLG_NOMGS        0x0020  /* Only start target for servers, reusing
                                         existing MGS services */
+#define LMD_FLG_WRITECONF    0x0040  /* Rewrite config log */
 
 #define lmd_is_client(x) ((x)->lmd_flags & LMD_FLG_CLIENT)
 
diff --git a/lustre/mgs/mgs_handler.c b/lustre/mgs/mgs_handler.c
index a8d8570..274b6fb 100644
--- a/lustre/mgs/mgs_handler.c
+++ b/lustre/mgs/mgs_handler.c
@@ -413,6 +413,10 @@ static int mgs_handle_target_reg(struct ptlrpc_request *req)
         mgs_counter_incr(req->rq_export, LPROC_MGS_TARGET_REG);
 
         mti = req_capsule_client_get(&req->rq_pill, &RMF_MGS_TARGET_INFO);
+
+        if (mti->mti_flags & LDD_F_NEED_INDEX)
+                mti->mti_flags |= LDD_F_WRITECONF;
+
         if (!(mti->mti_flags & (LDD_F_WRITECONF | LDD_F_UPGRADE14 |
                                 LDD_F_UPDATE))) {
                 /* We're just here as a startup ping. */
diff --git a/lustre/obdclass/obd_mount.c b/lustre/obdclass/obd_mount.c
index 8531464..1618a15 100644
--- a/lustre/obdclass/obd_mount.c
+++ b/lustre/obdclass/obd_mount.c
@@ -998,6 +998,8 @@ static int server_sb2mti(struct super_block *sb, struct mgs_target_info *mti)
 
         mti->mti_lustre_ver = LUSTRE_VERSION_CODE;
         mti->mti_config_ver = 0;
+        if (lsi->lsi_lmd->lmd_flags & LMD_FLG_WRITECONF)
+                ldd->ldd_flags |= LDD_F_WRITECONF;
         mti->mti_flags = ldd->ldd_flags;
         mti->mti_stripe_index = ldd->ldd_svindex;
         memcpy(mti->mti_uuid, ldd->ldd_uuid, sizeof(mti->mti_uuid));
@@ -1983,6 +1985,9 @@ static int lmd_parse(char *options, struct lustre_mount_data *lmd)
                 } else if (strncmp(s1, "nomgs", 5) == 0) {
                         lmd->lmd_flags |= LMD_FLG_NOMGS;
                         clear++;
+                } else if (strncmp(s1, "writeconf", 9) == 0) {
+                        lmd->lmd_flags |= LMD_FLG_WRITECONF;
+                        clear++;
                 } else if (strncmp(s1, "mgssec=", 7) == 0) {
                         rc = lmd_parse_mgssec(lmd, s1 + 7);
                         if (rc)
diff --git a/lustre/tests/conf-sanity.sh b/lustre/tests/conf-sanity.sh
index 55d4868..05b73c7 100644
--- a/lustre/tests/conf-sanity.sh
+++ b/lustre/tests/conf-sanity.sh
@@ -101,7 +101,14 @@ start_mds() {
 	local num=$(echo $facet | tr -d "mds")
 	local dev=$(mdsdevname $num)
 	echo "start mds service on `facet_active_host $facet`"
-	start $facet ${dev} $MDS_MOUNT_OPTS || return 94
+	start $facet ${dev} $MDS_MOUNT_OPTS $@ || return 94
+}
+
+start_mgsmds() {
+	if ! combined_mgs_mds ; then
+		start_mgs
+	fi
+	start_mds $@
 }
 
 stop_mds() {
@@ -112,7 +119,7 @@ stop_mds() {
 
 start_ost() {
 	echo "start ost1 service on `facet_active_host ost1`"
-	start ost1 `ostdevname 1` $OST_MOUNT_OPTS || return 95
+	start ost1 `ostdevname 1` $OST_MOUNT_OPTS $@ || return 95
 }
 
 stop_ost() {
@@ -123,7 +130,7 @@ stop_ost() {
 
 start_ost2() {
 	echo "start ost2 service on `facet_active_host ost2`"
-	start ost2 `ostdevname 2` $OST_MOUNT_OPTS || return 92
+	start ost2 `ostdevname 2` $OST_MOUNT_OPTS $@ || return 92
 }
 
 stop_ost2() {
@@ -2440,6 +2447,40 @@ test_56() {
 }
 run_test 56 "check big indexes"
 
+count_osts() {
+        do_facet mgs $LCTL get_param mgs.MGS.live.$FSNAME | grep OST | wc -l
+}
+
+test_59() {
+	start_mgsmds >> /dev/null
+	local C1=$(count_osts)
+	if [ $C1 -eq 0 ]; then
+		start_ost >> /dev/null
+		C1=$(count_osts)
+	fi
+	stopall
+	echo "original ost count: $C1 (expect > 0)"
+	[ $C1 -gt 0 ] || error "No OSTs in $FSNAME log"
+	start_mgsmds -o writeconf >> /dev/null || error "MDT start failed"
+	local C2=$(count_osts)
+	echo "after mdt writeconf count: $C2 (expect 0)"
+	[ $C2 -gt 0 ] && error "MDT writeconf should erase OST logs"
+	echo "OST start without writeconf should fail:"
+	start_ost >> /dev/null && error "OST start without writeconf didn't fail"
+	echo "OST start with writeconf should succeed:"
+	start_ost -o writeconf >> /dev/null || error "OST1 start failed"
+	local C3=$(count_osts)
+	echo "after ost writeconf count: $C3 (expect 1)"
+	[ $C3 -eq 1 ] || error "new OST writeconf should add:"
+	start_ost2 -o writeconf >> /dev/null || error "OST2 start failed"
+	local C4=$(count_osts)
+	echo "after ost2 writeconf count: $C4 (expect 2)"
+	[ $C4 -eq 2 ] || error "OST2 writeconf should add log"
+	stop_ost2 >> /dev/null
+	cleanup_nocli >> /dev/null
+}
+run_test 59 "writeconf mount option"
+
 cleanup_gss
 equals_msg `basename $0`: test complete
 [ -f "$TESTSUITELOG" ] && cat $TESTSUITELOG && grep -q FAIL $TESTSUITELOG && exit 1 || true