xlators/features/namespace: Add namespace xlator and link into brick graph

The following release-3.8-fb branch patch is upstreamed:
> features/namespace: Add namespace xlator and link into brick graph
> Commit ID: dbd30776f26e
> https://review.gluster.org/#/c/18041/
> By Michael Goulet <mgoulet@fb.com>

Changes in this patch:
Removes extra config.h and namespace.h file in namespace.c
Adds default_getspec_cbk to libglusterfs.sym
Rename dict_for_each to dict_foreach_inline
Remove fd.h header file stack.h
Add test case for truncate, open and symlink

This patch is required to forward port io-threads namespace patch.
Updates: #401

Change-Id: Ib88c95b89eecee9b8957df8a4c8712c899c761d1
Signed-off-by: Varsha Rao <varao@redhat.com>

1 files changed, 104 insertions, 0 deletions

diff --git a/tests/basic/namespace.t b/tests/basic/namespace.t
new file mode 100644
index 00000000000..ea473abbc1c
--- /dev/null
+++ b/tests/basic/namespace.t
@@ -0,0 +1,104 @@
+#!/bin/bash
+
+. $(dirname $0)/../include.rc
+. $(dirname $0)/../volume.rc
+. $(dirname $0)/../nfs.rc
+
+# These hashes are a result of calling SuperFastHash
+# on the corresponding folder names.
+NAMESPACE_HASH=28153613
+NAMESPACE2_HASH=3926991974
+NAMESPACE3_HASH=3493960770
+
+function check_samples() {
+        local FOP_TYPE=$1
+        local NS_HASH=$2
+        local FILE=$3
+        local BRICK=$4
+        local GFID="$(getfattr -n trusted.gfid -e text --only-values $B0/$BRICK$FILE | xxd -p)"
+
+        grep -i "ns_$OP" /var/log/glusterfs/bricks/d-backends-$BRICK.log |
+             grep -- $NS_HASH | sed 's/\-//g' | grep -- $GFID
+        if [ $? -eq 0 ]; then
+          echo "Y"
+         else
+          echo "N"
+        fi
+}
+
+cleanup;
+
+TEST mkdir -p $B0/${V0}{0,1,2,3,4,5,6,7,8,9}
+
+TEST glusterd
+TEST pidof glusterd
+TEST $CLI volume create $V0 replica 3 $H0:$B0/${V0}{0,1,2,3,4,5,6,7,8}
+TEST $CLI volume set $V0 nfs.disable off
+TEST $CLI volume set $V0 performance.stat-prefetch off
+TEST $CLI volume set $V0 performance.nfs.stat-prefetch off
+TEST $CLI volume set $V0 cluster.read-subvolume-index 0
+TEST $CLI volume set $V0 diagnostics.brick-log-level DEBUG
+TEST $CLI volume set $V0 features.tag-namespaces on
+TEST $CLI volume set $V0 storage.build-pgfid on
+TEST $CLI volume start $V0
+
+sleep 2
+
+TEST mount_nfs $H0:/$V0 $N0 nolock;
+
+################################
+# Paths in the samples #
+################################
+
+mkdir -p $N0/namespace
+
+# subvol_1 = bar, subvol_2 = foo, subvol_3 = hey
+# Test create, write (tagged by loc, fd respectively).
+touch $N0/namespace/{bar,foo,hey}
+echo "garbage" > $N0/namespace/bar
+echo "garbage" > $N0/namespace/foo
+echo "garbage" > $N0/namespace/hey
+EXPECT_WITHIN 10 "Y" check_samples CREATE $NAMESPACE_HASH /namespace/bar patchy0
+EXPECT_WITHIN 10 "Y" check_samples CREATE $NAMESPACE_HASH /namespace/foo patchy3
+EXPECT_WITHIN 10 "Y" check_samples CREATE $NAMESPACE_HASH /namespace/hey patchy6
+EXPECT_WITHIN 10 "Y" check_samples WRITEV $NAMESPACE_HASH /namespace/bar patchy0
+EXPECT_WITHIN 10 "Y" check_samples WRITEV $NAMESPACE_HASH /namespace/foo patchy3
+EXPECT_WITHIN 10 "Y" check_samples WRITEV $NAMESPACE_HASH /namespace/hey patchy6
+
+# Test stat (tagged by loc)
+stat $N0/namespace/bar &> /dev/null
+stat $N0/namespace/foo &> /dev/null
+stat $N0/namespace/hey &> /dev/null
+EXPECT_WITHIN 10 "Y" check_samples STAT $NAMESPACE_HASH /namespace/bar patchy0
+EXPECT_WITHIN 10 "Y" check_samples STAT $NAMESPACE_HASH /namespace/foo patchy3
+EXPECT_WITHIN 10 "Y" check_samples STAT $NAMESPACE_HASH /namespace/hey patchy6
+
+EXPECT_WITHIN 10 "Y" umount_nfs $N0;
+sleep 1
+TEST mount_nfs $H0:/$V0 $N0 nolock;
+
+cat $N0/namespace/bar &> /dev/null
+EXPECT_WITHIN 10 "Y" check_samples READ $NAMESPACE_HASH /namespace/bar patchy0
+
+dir $N0/namespace &> /dev/null
+EXPECT_WITHIN 10 "Y" check_samples LOOKUP $NAMESPACE_HASH /namespace patchy0
+
+mkdir -p $N0/namespace{2,3}
+EXPECT_WITHIN 10 "Y" check_samples MKDIR $NAMESPACE2_HASH /namespace2 patchy0
+EXPECT_WITHIN 10 "Y" check_samples MKDIR $NAMESPACE3_HASH /namespace3 patchy0
+
+touch $N0/namespace2/file
+touch $N0/namespace3/file
+EXPECT_WITHIN 10 "Y" check_samples CREATE $NAMESPACE2_HASH /namespace2/file patchy0
+EXPECT_WITHIN 10 "Y" check_samples CREATE $NAMESPACE3_HASH /namespace3/file patchy0
+
+truncate -s 0 $N0/namespace/bar
+EXPECT_WITHIN 10 "Y" check_samples TRUNCATE $NAMESPACE_HASH /namespace/bar patchy0
+
+ln -s $N0/namespace/foo $N0/namespace/foo_link
+EXPECT_WITHIN 10 "Y" check_samples SYMLINK $NAMESPACE_HASH /namespace/foo patchy3
+
+open $N0/namespace/hey
+EXPECT_WITHIN 10 "Y" check_samples OPEN $NAMESPACE_HASH /namespace/hey patchy6
+
+cleanup;