initial code repo

This patch creates initial code repo.

For ceph, luminous stable release will be used for base code,
and next changes and optimization for ceph will be added to it.

For opensds, currently any changes can be upstreamed into original
opensds repo (https://github.com/opensds/opensds), and so stor4nfv
will directly clone opensds code to deploy stor4nfv environment.
And the scripts for deployment based on ceph and opensds will be
put into 'ci' directory.

Change-Id: I46a32218884c75dda2936337604ff03c554648e4
Signed-off-by: Qiaowei Ren <qiaowei.ren@intel.com>

1 files changed, 31 insertions, 0 deletions

diff --git a/src/ceph/qa/tasks/cephfs/test_readahead.py b/src/ceph/qa/tasks/cephfs/test_readahead.py
new file mode 100644
index 0000000..31e7bf1
--- /dev/null
+++ b/src/ceph/qa/tasks/cephfs/test_readahead.py
@@ -0,0 +1,31 @@
+import logging
+from tasks.cephfs.fuse_mount import FuseMount
+from tasks.cephfs.cephfs_test_case import CephFSTestCase
+
+log = logging.getLogger(__name__)
+
+
+class TestReadahead(CephFSTestCase):
+    def test_flush(self):
+        if not isinstance(self.mount_a, FuseMount):
+            self.skipTest("FUSE needed for measuring op counts")
+
+        # Create 32MB file
+        self.mount_a.run_shell(["dd", "if=/dev/urandom", "of=foo", "bs=1M", "count=32"])
+
+        # Unmount and remount the client to flush cache
+        self.mount_a.umount_wait()
+        self.mount_a.mount()
+        self.mount_a.wait_until_mounted()
+
+        initial_op_r = self.mount_a.admin_socket(['perf', 'dump', 'objecter'])['objecter']['op_r']
+        self.mount_a.run_shell(["dd", "if=foo", "of=/dev/null", "bs=128k", "count=32"])
+        op_r = self.mount_a.admin_socket(['perf', 'dump', 'objecter'])['objecter']['op_r']
+        assert op_r >= initial_op_r
+        op_r -= initial_op_r
+        log.info("read operations: {0}".format(op_r))
+
+        # with exponentially increasing readahead, we should see fewer than 10 operations
+        # but this test simply checks if the client is doing a remote read for each local read
+        if op_r >= 32:
+            raise RuntimeError("readahead not working")