storage/posix: New gfid2path infra

With this infra, a new xattr is stored on each entry
creation as below.

trusted.gfid2path.<xxhash> = <pargfid>/<basename>

If there are hardlinks, multiple xattrs would be present.

Fops which are impacted:
create, mknod, link, symlink, rename, unlink

Option to enable:
gluster vol set <VOLNAME> storage.gfid2path on

Updates: #139
Change-Id: I369974cd16703c45ee87f82e6c2ff5a987a6cc6a
Signed-off-by: Kotresh HR <khiremat@redhat.com>
Reviewed-on: https://review.gluster.org/17488
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Aravinda VK <avishwan@redhat.com>
Reviewed-by: Amar Tumballi <amarts@redhat.com>

1 files changed, 153 insertions, 0 deletions

diff --git a/tests/gfid2path/gfid2path_nfs.t b/tests/gfid2path/gfid2path_nfs.t
new file mode 100644
index 00000000000..4e229dbb99f
--- /dev/null
+++ b/tests/gfid2path/gfid2path_nfs.t
@@ -0,0 +1,153 @@
+#!/bin/bash
+
+. $(dirname $0)/../include.rc
+. $(dirname $0)/../volume.rc
+. $(dirname $0)/../nfs.rc
+
+cleanup;
+
+XXHSUM_SOURCE="$(dirname $0)/../../contrib/xxhash/xxhsum.c $(dirname $0)/../../contrib/xxhash/xxhash.c"
+XXHSUM_EXEC=$(dirname $0)/xxhsum
+
+## Build xxhsum C source
+build_tester $XXHSUM_SOURCE -o $XXHSUM_EXEC -I$(dirname $0)/../../contrib/xxhash
+TEST [ -e $XXHSUM_EXEC ]
+
+TEST glusterd
+TEST pidof glusterd
+
+## Create a single brick volume (B=1)
+TEST $CLI volume create $V0 $H0:$B0/${V0}1;
+EXPECT "$V0" volinfo_field $V0 'Volume Name';
+EXPECT 'Created' volinfo_field $V0 'Status';
+EXPECT '1' brick_count $V0
+
+TEST $CLI volume set $V0 nfs.disable false
+
+## Start the volume
+TEST $CLI volume start $V0;
+EXPECT 'Started' volinfo_field $V0 'Status';
+
+## enable gfid2path
+TEST $CLI volume set $V0 gfid2path enable
+
+## Wait for volume to register with rpc.mountd
+EXPECT_WITHIN $NFS_EXPORT_TIMEOUT "1" is_nfs_export_available
+
+## Mount the volume
+TEST mount_nfs $H0:/$V0 $N0 nolock;
+
+
+pgfid="00000000-0000-0000-0000-000000000001"
+xxh64_file=$B0/${V0}1/xxh64_file
+
+#CREATE
+fname=$N0/file1
+touch $fname;
+backpath=$B0/${V0}1/file1
+
+#Check for the presence of xattr
+pgfid_bname=$pgfid/file1
+echo -n $pgfid_bname > $xxh64_file
+xxh64sum=$($XXHSUM_EXEC $xxh64_file | awk '{print $1}')
+key="trusted.gfid2path.$xxh64sum"
+EXPECT $pgfid_bname get_text_xattr $key $backpath
+
+#MKNOD
+fname=$N0/mknod_file1
+mknod $fname p;
+backpath=$B0/${V0}1/mknod_file1
+
+#Check for the presence of xattr
+pgfid_bname=$pgfid/mknod_file1
+echo -n $pgfid_bname > $xxh64_file
+xxh64sum=$($XXHSUM_EXEC $xxh64_file | awk '{print $1}')
+key="trusted.gfid2path.$xxh64sum"
+EXPECT $pgfid_bname get_text_xattr $key $backpath
+
+#LINK
+fname1=$N0/file1
+fname2=$N0/hl_file1
+ln $fname1 $fname2
+backpath1=$B0/${V0}1/file1
+backpath2=$B0/${V0}1/hl_file1
+
+#Check for the presence of two xattrs
+pgfid_bname=$pgfid/file1
+echo -n $pgfid_bname > $xxh64_file
+xxh64sum=$($XXHSUM_EXEC $xxh64_file | awk '{print $1}')
+key="trusted.gfid2path.$xxh64sum"
+EXPECT $pgfid_bname get_text_xattr $key $backpath1
+
+pgfid_bname=$pgfid/hl_file1
+echo -n $pgfid_bname > $xxh64_file
+xxh64sum=$($XXHSUM_EXEC $xxh64_file | awk '{print $1}')
+key="trusted.gfid2path.$xxh64sum"
+EXPECT $pgfid_bname get_text_xattr $key $backpath2
+
+#RENAME
+fname1=$N0/file1
+fname2=$N0/rn_file1
+mv $fname1 $fname2
+backpath=$B0/${V0}1/rn_file1
+
+#Check for the presence of new xattr
+pgfid_bname=$pgfid/file1
+echo -n $pgfid_bname > $xxh64_file
+xxh64sum=$($XXHSUM_EXEC $xxh64_file | awk '{print $1}')
+key="trusted.gfid2path.$xxh64sum"
+EXPECT_NOT $pgfid_bname get_text_xattr $key $backpath
+
+pgfid_bname=$pgfid/rn_file1
+echo -n $pgfid_bname > $xxh64_file
+xxh64sum=$($XXHSUM_EXEC $xxh64_file | awk '{print $1}')
+key="trusted.gfid2path.$xxh64sum"
+EXPECT $pgfid_bname get_text_xattr $key $backpath
+
+#UNLINK
+fname1=$N0/hl_file1
+rm -f $fname1
+fname2=$N0/rn_file1
+backpath=$B0/${V0}1/rn_file1
+
+#Check removal of xattr
+pgfid_bname=$pgfid/hl_file1
+echo -n $pgfid_bname > $xxh64_file
+xxh64sum=$($XXHSUM_EXEC $xxh64_file | awk '{print $1}')
+key="trusted.gfid2path.$xxh64sum"
+EXPECT_NOT $pgfid_bname get_text_xattr $key $backpath
+
+pgfid_bname=$pgfid/rn_file1
+echo -n $pgfid_bname > $xxh64_file
+xxh64sum=$($XXHSUM_EXEC $xxh64_file | awk '{print $1}')
+key="trusted.gfid2path.$xxh64sum"
+EXPECT $pgfid_bname get_text_xattr $key $backpath
+
+#SYMLINK
+fname=rn_file1
+sym_fname=$N0/sym_file1
+ln -s $fname $sym_fname
+backpath=$B0/${V0}1/sym_file1
+
+#Check for the presence of xattr
+pgfid_bname=$pgfid/sym_file1
+echo -n $pgfid_bname > $xxh64_file
+xxh64sum=$($XXHSUM_EXEC $xxh64_file | awk '{print $1}')
+key="trusted.gfid2path.$xxh64sum"
+EXPECT $pgfid_bname get_text_xattr $key $backpath
+
+#FINAL UNLINK
+fname=$N0/rn_file1
+sym_fname=$N0/sym_file1
+mknod_fname=$N0/mknod_file1
+
+rm -f $fname
+rm -f $sym_fname
+rm -f $mknod_fname
+TEST ! stat $fname
+TEST ! stat $sym_fname
+TEST ! stat $mknod_fname
+
+#Cleanups
+rm -f $STUB_EXEC
+cleanup;