qa/workunits/snaps: add snaprealm split test

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

diff --git a/qa/workunits/fs/snaps/snaptest-realm-split.sh b/qa/workunits/fs/snaps/snaptest-realm-split.sh
new file mode 100755 (executable)
index 0000000..3f01fd5
--- /dev/null
+++ b/qa/workunits/fs/snaps/snaptest-realm-split.sh
@@ -0,0 +1,33 @@
+#!/bin/sh -x
+
+set -e
+
+ceph fs set cephfs allow_new_snaps true --yes-i-really-mean-it
+
+mkdir -p 1/a
+exec 3<> 1/a/file1
+
+echo -n a >&3
+
+mkdir 1/.snap/s1
+
+echo -n b >&3
+
+mkdir 2
+# create new snaprealm at dir a, file1's cap should be attached to the new snaprealm
+mv 1/a 2
+
+mkdir 2/.snap/s2
+
+echo -n c >&3
+
+exec 3>&-
+
+grep '^a$' 1/.snap/s1/a/file1
+grep '^ab$' 2/.snap/s2/a/file1
+grep '^abc$' 2/a/file1
+
+rmdir 1/.snap/s1
+rmdir 2/.snap/s2
+rm -rf 1 2
+echo OK