1 files changed, 103 insertions, 0 deletions
diff --git a/qa/workunits/rbd/krbd_rxbounce.sh b/qa/workunits/rbd/krbd_rxbounce.sh
new file mode 100755
index 000000000..ad00e3f96
--- /dev/null
+++ b/qa/workunits/rbd/krbd_rxbounce.sh
@@ -0,0 +1,103 @@
+#!/usr/bin/env bash
+
+set -ex
+
+rbd create --size 256 img
+
+IMAGE_SIZE=$(rbd info --format=json img | python3 -c 'import sys, json; print(json.load(sys.stdin)["size"])')
+OBJECT_SIZE=$(rbd info --format=json img | python3 -c 'import sys, json; print(json.load(sys.stdin)["object_size"])')
+NUM_OBJECTS=$((IMAGE_SIZE / OBJECT_SIZE))
+[[ $((IMAGE_SIZE % OBJECT_SIZE)) -eq 0 ]]
+OP_SIZE=16384
+
+DEV=$(sudo rbd map img)
+{
+    for ((i = 0; i < $NUM_OBJECTS; i++)); do
+        echo pwrite -b $OP_SIZE -S $i $((i * OBJECT_SIZE)) $OP_SIZE
+    done
+    echo fsync
+    echo quit
+} | xfs_io $DEV
+sudo rbd unmap $DEV
+
+g++ -xc++ -o racereads - -lpthread <<EOF
+#include <assert.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#include <thread>
+#include <vector>
+
+const int object_size = $OBJECT_SIZE;
+const int num_objects = $NUM_OBJECTS;
+const int read_len = $OP_SIZE;
+const int num_reads = 1024;
+
+int main() {
+  int fd = open("$DEV", O_DIRECT | O_RDONLY);
+  assert(fd >= 0);
+
+  void *buf;
+  int r = posix_memalign(&buf, 512, read_len);
+  assert(r == 0);
+
+  std::vector<std::thread> threads;
+  for (int i = 0; i < num_objects; i++) {
+    threads.emplace_back(
+        [fd, buf, read_off = static_cast<off_t>(i) * object_size]() {
+          for (int i = 0; i < num_reads; i++) {
+            auto len = pread(fd, buf, read_len, read_off);
+            assert(len == read_len);
+          }
+        });
+  }
+
+  for (auto &t : threads) {
+    t.join();
+  }
+}
+EOF
+
+DEV=$(sudo rbd map -o ms_mode=legacy img)
+sudo dmesg -C
+./racereads
+[[ $(dmesg | grep -c 'libceph: osd.* bad crc/signature') -gt 100 ]]
+sudo rbd unmap $DEV
+
+DEV=$(sudo rbd map -o ms_mode=legacy,rxbounce img)
+sudo dmesg -C
+./racereads
+[[ $(dmesg | grep -c 'libceph: osd.* bad crc/signature') -eq 0 ]]
+sudo rbd unmap $DEV
+
+DEV=$(sudo rbd map -o ms_mode=crc img)
+sudo dmesg -C
+./racereads
+[[ $(dmesg | grep -c 'libceph: osd.* integrity error') -gt 100 ]]
+sudo rbd unmap $DEV
+
+DEV=$(sudo rbd map -o ms_mode=crc,rxbounce img)
+sudo dmesg -C
+./racereads
+[[ $(dmesg | grep -c 'libceph: osd.* integrity error') -eq 0 ]]
+sudo rbd unmap $DEV
+
+# rxbounce is a no-op for secure mode
+DEV=$(sudo rbd map -o ms_mode=secure img)
+sudo dmesg -C
+./racereads
+[[ $(dmesg | grep -c 'libceph: osd.* integrity error') -eq 0 ]]
+sudo rbd unmap $DEV
+
+DEV=$(sudo rbd map -o ms_mode=secure,rxbounce img)
+sudo dmesg -C
+./racereads
+[[ $(dmesg | grep -c 'libceph: osd.* integrity error') -eq 0 ]]
+sudo rbd unmap $DEV
+
+rbd rm img
+
+echo OK