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+Name:		ocf
+Version:	21.6.3.1
+Release:	1
+Summary:	high performance block storage caching meta-library written in C 
+License:	BSD-3-Clause 
+URL:		https://github.com/Open-CAS/ocf
+
+Source0:	https://github.com/Open-CAS/ocf/archive/refs/tags/v21.6.3.1.tar.gz
+
+%description
+Open CAS Framework (OCF) is high performance block storage caching
+meta-library written in C. It's entirely platform and system
+independent, accessing system API through user provided environment
+wrappers layer. OCF tightly integrates with the rest of software stack,
+providing flawless, high performance, low latency caching utility.
+
+%package devel
+Summary:	source code package
+BuildArch:	noarch
+
+%description devel
+This package contains source code of OCF and can be futher intergrated
+to project to accelerate low performance block storage with high
+performance block storage.
+
+%prep
+%autosetup -n %{name}-%{version} -p1
+
+%install
+install -d $RPM_BUILD_ROOT/usr/src/%{name}-%{version}
+cp -a * $RPM_BUILD_ROOT/usr/src/%{name}-%{version}
+
+%files devel
+%dir /usr/src
+/usr/src/%{name}-%{version}/
+
+%changelog
+* Thu Dec 29 2022 shikemeng <shikemeng@huawei.com> - 21.6.3.1-1
+- Initialize OCF to 21.6.3.1
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