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-rw-r--r--tests/basic/metadisp/fsyncdir.c29
-rw-r--r--tests/basic/metadisp/ftruncate.c34
-rw-r--r--tests/basic/metadisp/fxattr.c107
-rw-r--r--tests/basic/metadisp/gfs-fsetxattr.c141
-rw-r--r--tests/basic/metadisp/metadisp.t316
-rw-r--r--tests/basic/metadisp/metadisp.vol14
6 files changed, 641 insertions, 0 deletions
diff --git a/tests/basic/metadisp/fsyncdir.c b/tests/basic/metadisp/fsyncdir.c
new file mode 100644
index 00000000000..62b532b9ce4
--- /dev/null
+++ b/tests/basic/metadisp/fsyncdir.c
@@ -0,0 +1,29 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include <fcntl.h>
+
+int
+main(int argc, char **argv)
+{
+ int pfd;
+
+ pfd = open(argv[1], O_RDONLY | O_DIRECTORY);
+ if (pfd == (-1)) {
+ perror("open");
+ return EXIT_FAILURE;
+ }
+
+ if (rename(argv[2], argv[3]) == (-1)) {
+ perror("rename");
+ return EXIT_FAILURE;
+ }
+
+ if (fsync(pfd) == (-1)) {
+ perror("fsync");
+ return EXIT_FAILURE;
+ }
+
+ return EXIT_SUCCESS;
+}
diff --git a/tests/basic/metadisp/ftruncate.c b/tests/basic/metadisp/ftruncate.c
new file mode 100644
index 00000000000..c9185212c31
--- /dev/null
+++ b/tests/basic/metadisp/ftruncate.c
@@ -0,0 +1,34 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include <fcntl.h>
+
+int
+main(int argc, char **argv)
+{
+ int pfd;
+
+ pfd = open(argv[1], O_RDWR);
+ if (pfd == (-1)) {
+ perror("open");
+ return EXIT_FAILURE;
+ }
+
+ if (ftruncate(pfd, 0) == (-1)) {
+ perror("ftruncate");
+ return EXIT_FAILURE;
+ }
+
+ if (write(pfd, "hello", 5) == (-1)) {
+ perror("write");
+ return EXIT_FAILURE;
+ }
+
+ if (fsync(pfd) == (-1)) {
+ perror("fsync");
+ return EXIT_FAILURE;
+ }
+
+ return EXIT_SUCCESS;
+}
diff --git a/tests/basic/metadisp/fxattr.c b/tests/basic/metadisp/fxattr.c
new file mode 100644
index 00000000000..e552057778a
--- /dev/null
+++ b/tests/basic/metadisp/fxattr.c
@@ -0,0 +1,107 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include <fcntl.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/xattr.h>
+
+static char MY_XATTR[] = "user.fxtest";
+static char *PROGRAM;
+#define CONSUME(v) \
+ do { \
+ if (!argc) { \
+ fprintf(stderr, "missing argument\n"); \
+ return EXIT_FAILURE; \
+ } \
+ v = argv[0]; \
+ ++argv; \
+ --argc; \
+ } while (0)
+
+static int
+do_get(int argc, char **argv, int fd)
+{
+ char *value;
+ int ret;
+ char buf[1024];
+
+ CONSUME(value);
+
+ ret = fgetxattr(fd, MY_XATTR, buf, sizeof(buf));
+ if (ret == (-1)) {
+ perror("fgetxattr");
+ return EXIT_FAILURE;
+ }
+
+ if (strncmp(buf, value, ret) != 0) {
+ fprintf(stderr, "data mismatch\n");
+ return EXIT_FAILURE;
+ }
+
+ return EXIT_SUCCESS;
+}
+
+static int
+do_set(int argc, char **argv, int fd)
+{
+ char *value;
+ int ret;
+
+ CONSUME(value);
+
+ ret = fsetxattr(fd, MY_XATTR, value, strlen(value), 0);
+ if (ret == (-1)) {
+ perror("fsetxattr");
+ return EXIT_FAILURE;
+ }
+
+ return EXIT_SUCCESS;
+}
+
+static int
+do_remove(int argc, char **argv, int fd)
+{
+ int ret;
+
+ ret = fremovexattr(fd, MY_XATTR);
+ if (ret == (-1)) {
+ perror("femovexattr");
+ return EXIT_FAILURE;
+ }
+
+ return EXIT_SUCCESS;
+}
+
+int
+main(int argc, char **argv)
+{
+ int fd;
+ char *path;
+ char *cmd;
+
+ CONSUME(PROGRAM);
+ CONSUME(path);
+ CONSUME(cmd);
+
+ fd = open(path, O_RDWR);
+ if (fd == (-1)) {
+ perror("open");
+ return EXIT_FAILURE;
+ }
+
+ if (strcmp(cmd, "get") == 0) {
+ return do_get(argc, argv, fd);
+ }
+
+ if (strcmp(cmd, "set") == 0) {
+ return do_set(argc, argv, fd);
+ }
+
+ if (strcmp(cmd, "remove") == 0) {
+ return do_remove(argc, argv, fd);
+ }
+
+ return EXIT_SUCCESS;
+}
diff --git a/tests/basic/metadisp/gfs-fsetxattr.c b/tests/basic/metadisp/gfs-fsetxattr.c
new file mode 100644
index 00000000000..63578bc528f
--- /dev/null
+++ b/tests/basic/metadisp/gfs-fsetxattr.c
@@ -0,0 +1,141 @@
+#include <glusterfs/api/glfs.h>
+#include <glusterfs/api/glfs-handles.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+int gfapi = 1;
+
+int
+main(int argc, char *argv[])
+{
+ glfs_t *fs = NULL;
+ int ret = 0;
+ int i = 0;
+ glfs_fd_t *fd = NULL;
+ char *topdir = "topdir", *filename = "file1";
+ char *buf = NULL;
+ char *logfile = NULL;
+ char *hostname = NULL;
+ char *basename = NULL;
+ char *dir1 = NULL, *dir2 = NULL, *filename1 = NULL, *filename2 = NULL;
+ struct stat sb = {
+ 0,
+ };
+
+ if (argc != 5) {
+ fprintf(
+ stderr,
+ "Expect following args %s <hostname> <Vol> <log file> <basename>\n",
+ argv[0]);
+ return -1;
+ }
+
+ hostname = argv[1];
+ logfile = argv[3];
+ basename = argv[4];
+
+ fs = glfs_new(argv[2]);
+ if (!fs) {
+ fprintf(stderr, "glfs_new: returned NULL (%s)\n", strerror(errno));
+ return -1;
+ }
+
+ ret = glfs_set_volfile_server(fs, "tcp", hostname, 24007);
+ if (ret < 0) {
+ fprintf(stderr, "glfs_set_volfile_server failed ret:%d (%s)\n", ret,
+ strerror(errno));
+ return -1;
+ }
+
+ ret = glfs_set_logging(fs, logfile, 7);
+ if (ret < 0) {
+ fprintf(stderr, "glfs_set_logging failed with ret: %d (%s)\n", ret,
+ strerror(errno));
+ return -1;
+ }
+
+ ret = glfs_init(fs);
+ if (ret < 0) {
+ fprintf(stderr, "glfs_init failed with ret: %d (%s)\n", ret,
+ strerror(errno));
+ return -1;
+ }
+
+ ret = asprintf(&dir1, "%s-dir", basename);
+ if (ret < 0) {
+ fprintf(stderr, "cannot construct filename (%s)", strerror(errno));
+ return ret;
+ }
+
+ ret = glfs_mkdir(fs, dir1, 0755);
+ if (ret < 0) {
+ fprintf(stderr, "mkdir(%s): %s\n", dir1, strerror(errno));
+ return -1;
+ }
+
+ fd = glfs_opendir(fs, dir1);
+ if (!fd) {
+ fprintf(stderr, "/: %s\n", strerror(errno));
+ return -1;
+ }
+
+ ret = glfs_fsetxattr(fd, "user.dirfattr", "fsetxattr", 9, 0);
+ if (ret < 0) {
+ fprintf(stderr, "fsetxattr(%s): %d (%s)\n", dir1, ret, strerror(errno));
+ return -1;
+ }
+
+ ret = glfs_closedir(fd);
+ if (ret < 0) {
+ fprintf(stderr, "glfs_closedir failed with ret: %d (%s)\n", ret,
+ strerror(errno));
+ return -1;
+ }
+
+ ret = asprintf(&filename1, "%s-file", basename);
+ if (ret < 0) {
+ fprintf(stderr, "cannot construct filename (%s)", strerror(errno));
+ return ret;
+ }
+
+ ret = asprintf(&filename2, "%s-file-renamed", basename);
+ if (ret < 0) {
+ fprintf(stderr, "cannot construct filename (%s)", strerror(errno));
+ return ret;
+ }
+
+ fd = glfs_creat(fs, filename1, O_RDWR, 0644);
+ if (!fd) {
+ fprintf(stderr, "%s: (%p) %s\n", filename1, fd, strerror(errno));
+ return -1;
+ }
+
+ ret = glfs_rename(fs, filename1, filename2);
+ if (ret < 0) {
+ fprintf(stderr, "glfs_rename failed with ret: %d (%s)\n", ret,
+ strerror(errno));
+ return -1;
+ }
+
+ ret = glfs_lstat(fs, filename2, &sb);
+ if (ret < 0) {
+ fprintf(stderr, "glfs_lstat failed with ret: %d (%s)\n", ret,
+ strerror(errno));
+ return -1;
+ }
+
+ ret = glfs_fsetxattr(fd, "user.filefattr", "fsetxattr", 9, 0);
+ if (ret < 0) {
+ fprintf(stderr, "fsetxattr(%s): %d (%s)\n", dir1, ret, strerror(errno));
+ return -1;
+ }
+
+ ret = glfs_close(fd);
+ if (ret < 0) {
+ fprintf(stderr, "glfs_close failed with ret: %d (%s)\n", ret,
+ strerror(errno));
+ return -1;
+ }
+}
diff --git a/tests/basic/metadisp/metadisp.t b/tests/basic/metadisp/metadisp.t
new file mode 100644
index 00000000000..894ffe07226
--- /dev/null
+++ b/tests/basic/metadisp/metadisp.t
@@ -0,0 +1,316 @@
+#!/usr/bin/env bash
+
+. $(dirname $0)/../../include.rc
+. $(dirname $0)/../../volume.rc
+
+
+# Considering `--enable-metadisp` is an option for `./configure`,
+# which is disabled by default, this test will never pass regression.
+# But to see the value of this test, run below after configuring
+# with above option :
+# `prove -vmfe '/bin/bash' tests/basic/metadisp/metadisp.t`
+
+#G_TESTDEF_TEST_STATUS_CENTOS6=BAD_TEST
+
+cleanup;
+
+TEST mkdir -p $B0/b0/{0,1}
+
+TEST setfattr -n trusted.glusterfs.volume-id -v 0xddab9eece7b64a95b07351a1f748f56f ${B0}/b0/0
+TEST setfattr -n trusted.glusterfs.volume-id -v 0xddab9eece7b64a95b07351a1f748f56f ${B0}/b0/1
+
+TEST $GFS --volfile=$(dirname $0)/metadisp.vol --volfile-id=$V0 $M0;
+
+NUM_FILES=40
+TEST touch $M0/{1..${NUM_FILES}}
+
+# each drive should get 40 files
+TEST [ $(dir -1 $B0/b0/0/ | wc -l) -eq $NUM_FILES ]
+TEST [ $(dir -1 $B0/b0/1/ | wc -l) -eq $NUM_FILES ]
+
+# now write some data to a file
+echo "hello" > $M0/3
+filename=$$
+echo "hello" > /tmp/metadisp-write-${filename}
+checksum=$(md5sum /tmp/metadisp-write-${filename} | awk '{print $1}')
+TEST [ "$(md5sum $M0/3 | awk '{print $1}')" == "$checksum" ]
+
+# check that the backend file exists on b1
+gfid=$(gf_gfid_xattr_to_str $(gf_get_gfid_xattr $B0/b0/*/3))
+TEST [ $(dir -1 $B0/b0/1/$gfid | wc -l) -eq 1 ]
+
+# check that the backend file matches the frontend
+TEST [ "$(md5sum $B0/b0/1/$gfid | awk '{print $1}')" == "$checksum" ]
+
+# delete the file
+TEST rm $M0/3
+
+# ensure the frontend and backend files are cleaned up
+TEST ! -e $M0/3
+TEST ! [ stat $B0/b*/*/$gfid ]
+
+# Test TRUNCATE + WRITE flow
+echo "hello" | tee $M0/4
+echo "goo" | tee $M0/4
+filename=$$
+echo "goo" | tee /tmp/metadisp-truncate-${filename}
+checksum=$(md5sum /tmp/metadisp-truncate-${filename} | awk '{print $1}')
+TEST [ "$(md5sum $M0/4 | awk '{print $1}')" == "$checksum" ]
+
+# Test mkdir + rmdir.
+TEST mkdir $M0/rmdir_me
+nfiles=$(ls -d $B0/b*/*/rmdir_me 2> /dev/null | wc -l)
+TEST [ "$nfiles" = "1" ]
+TEST rmdir $M0/rmdir_me
+nfiles=$(ls -d $B0/b*/*/rmdir_me 2> /dev/null | wc -l)
+TEST [ "$nfiles" = "0" ]
+
+# Test rename.
+TEST touch $M0/rename_me
+nfiles=$(ls $B0/b*/*/rename_me 2> /dev/null | wc -l)
+TEST [ "$nfiles" = "1" ]
+nfiles=$(ls $B0/b*/*/such_rename 2> /dev/null | wc -l)
+TEST [ "$nfiles" = "0" ]
+TEST mv $M0/rename_me $M0/such_rename
+nfiles=$(ls $B0/b*/*/rename_me 2> /dev/null | wc -l)
+TEST [ "$nfiles" = "0" ]
+nfiles=$(ls $B0/b*/*/such_rename 2> /dev/null | wc -l)
+TEST [ "$nfiles" = "1" ]
+
+# Test rename of a file that doesn't exist.
+TEST ! mv $M0/does-not-exist $M0/neither-does-this
+
+
+# cleanup all the other files.
+TEST rm -v $M0/1 $M0/2 $M0/{4..${NUM_FILES}}
+TEST rm $M0/such_rename
+TEST [ $(ls /d/backends/b0/0/ | wc -l) -eq 0 ]
+TEST [ $(ls /d/backends/b0/1/ | wc -l) -eq 0 ]
+
+# Test CREATE flow
+NUM_FILES=40
+TEST touch $M0/{1..${NUM_FILES}}
+TEST [ $(ls /d/backends/b0/0/ | wc -l) -eq $NUM_FILES ]
+TEST [ $(ls /d/backends/b0/1/ | wc -l) -eq $NUM_FILES ]
+
+# Test UNLINK flow
+# No drives should have any files
+TEST rm -v $M0/{1..${NUM_FILES}}
+TEST [ $(ls /d/backends/b0/0/ | wc -l) -eq 0 ]
+TEST [ $(ls /d/backends/b0/1/ | wc -l) -eq 0 ]
+
+# Test CREATE + WRITE + READ flow
+filename=$$
+dd if=/dev/urandom of=/tmp/${filename} bs=1M count=10
+checksum=$(md5sum /tmp/${filename} | awk '{print $1}')
+TEST cp -v /tmp/${filename} $M0/1
+TEST cp -v /tmp/${filename} $M0/2
+TEST cp -v /tmp/${filename} $M0/3
+TEST cp -v /tmp/${filename} $M0/4
+TEST [ "$(md5sum $M0/1 | awk '{print $1}')" == "$checksum" ]
+TEST [ "$(md5sum $M0/2 | awk '{print $1}')" == "$checksum" ]
+TEST [ "$(md5sum $M0/3 | awk '{print $1}')" == "$checksum" ]
+TEST [ "$(md5sum $M0/4 | awk '{print $1}')" == "$checksum" ]
+
+# Test TRUNCATE + WRITE flow
+TEST dd if=/dev/zero of=$M0/1 bs=1M count=20
+
+# Check that readdir stats the files properly and we get the correct sizes
+TEST [ $(find $M0 -size +9M | wc -l) -eq 4 ];
+
+# Test mkdir + rmdir.
+TEST mkdir $M0/rmdir_me
+nfiles=$(ls -d $B0/b*/*/rmdir_me 2> /dev/null | wc -l)
+TEST [ "$nfiles" = "1" ]
+TEST rmdir $M0/rmdir_me
+nfiles=$(ls -d $B0/b*/*/rmdir_me 2> /dev/null | wc -l)
+TEST [ "$nfiles" = "0" ]
+
+# Test rename.
+# Still flaky, so disabled until it can be debugged.
+TEST touch $M0/rename_me
+nfiles=$(ls $B0/b*/*/rename_me 2> /dev/null | wc -l)
+TEST [ "$nfiles" = "1" ]
+nfiles=$(ls $B0/b*/*/such_rename 2> /dev/null | wc -l)
+TEST [ "$nfiles" = "0" ]
+TEST mv $M0/rename_me $M0/such_rename
+nfiles=$(ls $B0/b*/*/rename_me 2> /dev/null | wc -l)
+TEST [ "$nfiles" = "0" ]
+nfiles=$(ls $B0/b*/*/such_rename 2> /dev/null | wc -l)
+TEST [ "$nfiles" = "1" ]
+
+# Test rename of a file that doesn't exist.
+TEST ! mv $M0/does-not-exist $M0/neither-does-this
+
+# Test rename over an existing file.
+ok=yes
+for i in $(seq 0 9); do
+ echo foo > $M0/src$i
+ echo bar > $M0/dst$i
+done
+for i in $(seq 0 9); do
+ mv $M0/src$i $M0/dst$i
+done
+for i in $(seq 0 9); do
+ nfiles=$(cat $B0/b0/*/dst$i | wc -l)
+ if [ "$nfiles" = "2" ]; then
+ echo "COLLISION on dst$i"
+ (ls -l $B0/b0/*/dst$i; cat $B0/b0/*/dst$i) | sed "/^/s// /"
+ ok=no
+ fi
+done
+EXPECT "yes" echo $ok
+
+# Test rename of a directory.
+count_copies () {
+ ls -d $B0/b?/?/$1 2> /dev/null | wc -l
+}
+TEST mkdir $M0/foo_dir
+EXPECT 1 count_copies foo_dir
+EXPECT 0 count_copies bar_dir
+TEST mv $M0/foo_dir $M0/bar_dir
+EXPECT 0 count_copies foo_dir
+EXPECT 1 count_copies bar_dir
+
+for x in $(seq 0 99); do
+ touch $M0/target$x
+ ln -s $M0/target$x $M0/link$x
+done
+on_0=$(ls $B0/b*/0/link* | wc -l)
+on_1=$(ls $B0/b*/1/link* | wc -l)
+TEST [ "$on_0" -eq 100 ]
+TEST [ "$on_1" -eq 0 ]
+TEST [ "$(ls -l $M0/link* | wc -l)" = 100 ]
+
+# Test (hard) link.
+_test_hardlink () {
+ local b
+ local has_src
+ local has_dst
+ local src_inum
+ local dst_inum
+ touch $M0/hardsrc$1
+ ln $M0/hardsrc$1 $M0/harddst$1
+ for b in $B0/b{0}/{0,1}; do
+ [ -f $b/hardsrc$1 ]; has_src=$?
+ [ -f $b/harddst$1 ]; has_dst=$?
+ if [ "$has_src" != "$has_dst" ]; then
+ echo "MISSING $b/hardxxx$1 $has_src $has_dst"
+ return
+ fi
+ if [ "$has_src$has_dst" = "00" ]; then
+ src_inum=$(stat -c '%i' $b/hardsrc$1)
+ dst_inum=$(stat -c '%i' $b/harddst$1)
+ if [ "$dst_inum" != "$src_inum" ]; then
+ echo "MISMATCH $b/hardxx$i $src_inum $dst_inum"
+ return
+ fi
+ fi
+ done
+ echo "OK"
+}
+
+test_hardlink () {
+ local result=$(_test_hardlink $*)
+ # [ "$result" = "OK" ] || echo $result > /dev/tty
+ echo $result
+}
+
+# Do this multiple times to make sure colocation isn't a fluke.
+EXPECT "OK" test_hardlink 0
+EXPECT "OK" test_hardlink 1
+EXPECT "OK" test_hardlink 2
+EXPECT "OK" test_hardlink 3
+EXPECT "OK" test_hardlink 4
+EXPECT "OK" test_hardlink 5
+EXPECT "OK" test_hardlink 6
+EXPECT "OK" test_hardlink 7
+EXPECT "OK" test_hardlink 8
+EXPECT "OK" test_hardlink 9
+
+# Test remove hardlink source. ensure deleting one file
+# doesn't delete the data unless link-count is 1
+TEST mkdir $M0/hardlink
+TEST touch $M0/hardlink/fileA
+echo "data" >> $M0/hardlink/fileA
+checksum=$(md5sum $M0/hardlink/fileA | awk '{print $1}')
+TEST ln $M0/hardlink/fileA $M0/hardlink/fileB
+TEST [ $(dir -1 $M0/hardlink/ | wc -l) -eq 2 ]
+TEST rm $M0/hardlink/fileA
+TEST [ $(dir -1 $M0/hardlink/ | wc -l) -eq 1 ]
+TEST [ "$(md5sum $M0/hardlink/fileB | awk '{print $1}')" == "$checksum" ]
+
+#
+# FIXME: statfs values look ok but the test is bad
+#
+# Test statfs. If we're doing it right, the numbers for the mountpoint should be
+# double those for the brick filesystem times the number of bricks,
+# but unless we're on a completely idle
+# system (which never happens) the numbers can change even while this function
+# runs and that would trip us up. Do a sloppy comparison to deal with that.
+#compare_fields () {
+# val1=$(df $1 | grep / | awk "{print \$$3}")
+# val2=$(df $2 | grep / | awk "{print \$$3}")
+# [ "$val2" -gt "$(((val1/(29/10))*19/10))" -a "$val2" -lt "$(((val1/(31/10))*21/10))" ]
+#}
+
+#brick_df=$(df $B0 | grep /)
+#mount_df=$(df $M0 | grep /)
+#TEST compare_fields $B0 $M0 2 # Total blocks
+#TEST compare_fields $B0 $M0 3 # Used
+#TEST compare_fields $B0 $M0 4 # Available
+
+# Test removexattr.
+#RXATTR_FILE=$(get_file_not_on_disk0 rxtest)
+#TEST setfattr -n user.foo -v bar $M0/$RXATTR_FILE
+#TEST getfattr -n user.foo $B0/b0/1/$RXATTR_FILE
+#TEST setfattr -x user.foo $M0/$RXATTR_FILE
+#TEST ! getfattr -n user.foo $B0/b0/1/$RXATTR_FILE
+
+# Test fsyncdir. We can't really test whether it's doing the right thing,
+# but we can test that it doesn't fail and we can hand-check that it's calling
+# down to all of the disks instead of just one.
+#
+# P.S. There's no fsyncdir test in the rest of Gluster, so who even knows if
+# other translators are handling it correctly?
+
+#FSYNCDIR_EXE=$(dirname $0)/fsyncdir
+#build_tester ${FSYNCDIR_EXE}.c
+#TEST touch $M0/fsyncdir_src
+#TEST $FSYNCDIR_EXE $M0 $M0/fsyncdir_src $M0/fsyncdir_dst
+#TEST rm -f $FSYNCDIR_EXE
+
+# Test fsetxattr, fgetxattr, fremovexattr (in that order).
+FXATTR_FILE=$M0/fxfile1
+TEST touch $FXATTR_FILE
+FXATTR_EXE=$(dirname $0)/fxattr
+build_tester ${FXATTR_EXE}.c
+TEST ! getfattr -n user.fxtest $FXATTR_FILE
+TEST $FXATTR_EXE $FXATTR_FILE set value1
+TEST getfattr -n user.fxtest $FXATTR_FILE
+TEST setfattr -n user.fxtest -v value2 $FXATTR_FILE
+TEST $FXATTR_EXE $FXATTR_FILE get value2
+TEST $FXATTR_EXE $FXATTR_FILE remove
+TEST ! getfattr -n user.fxtest $FXATTR_FILE
+TEST rm -f $FXATTR_EXE
+
+# Test ftruncate
+FTRUNCATE_EXE=$(dirname $0)/ftruncate
+build_tester ${FTRUNCATE_EXE}.c
+FTRUNCATE_FILE=$M0/ftfile1
+TEST dd if=/dev/urandom of=$FTRUNCATE_FILE count=1 bs=1MB
+TEST $FTRUNCATE_EXE $FTRUNCATE_FILE
+#gfid=$(gf_gfid_xattr_to_str $(gf_get_gfid_xattr $B0/b0/*/ftfile1))
+
+# Test fallocate, discard, zerofill. Actually we don't so much check that these
+# *work* as that they don't throw any errors (especially ENOENT because the
+# file's not on disk zero).
+FALLOC_FILE=fatest1
+TEST touch $M0/$FALLOC_FILE
+TEST fallocate -l $((4096*5)) $M0/$FALLOC_FILE
+TEST fallocate -p -o 4096 -l 4096 $M0/$FALLOC_FILE
+# This actually fails with "operation not supported" on most filesystems, so
+# don't leave it enabled except to test changes.
+#TEST fallocate -z -o $((4096*3)) -l 4096 $M0/$FALLOC_FILE
+
+#cleanup;
diff --git a/tests/basic/metadisp/metadisp.vol b/tests/basic/metadisp/metadisp.vol
new file mode 100644
index 00000000000..58ae2f6f2a8
--- /dev/null
+++ b/tests/basic/metadisp/metadisp.vol
@@ -0,0 +1,14 @@
+volume posix-0
+ type storage/posix
+ option directory /d/backends/b0/0
+end-volume
+
+volume posix-1
+ type storage/posix
+ option directory /d/backends/b0/1
+end-volume
+
+volume metadisp-0
+ type features/metadisp
+ subvolumes posix-0 posix-1
+end-volume