qa/workunits/snaps: add hardlink snapshot test

Signed-off-by: "Yan, Zheng" <zyan@redhat.com>

diff --git a/qa/workunits/fs/snaps/snaptest-hardlink.sh b/qa/workunits/fs/snaps/snaptest-hardlink.sh
new file mode 100755 (executable)
index 0000000..9848a01
--- /dev/null
+++ b/qa/workunits/fs/snaps/snaptest-hardlink.sh
@@ -0,0 +1,27 @@
+#!/bin/sh -x
+
+set -e
+
+ceph fs set cephfs allow_new_snaps true --yes-i-really-mean-it
+
+mkdir 1 2
+echo asdf >1/file1
+echo asdf >1/file2
+
+ln 1/file1 2/file1
+ln 1/file2 2/file2
+
+mkdir 2/.snap/s1
+
+echo qwer >1/file1
+grep asdf 2/.snap/s1/file1
+
+rm -f 1/file2
+grep asdf 2/.snap/s1/file2
+rm -f 2/file2
+grep asdf 2/.snap/s1/file2
+
+rmdir 2/.snap/s1
+rm -rf 1 2
+
+echo OK