Compiling and Installing the Read Cache Library

Procedure

1. Download the Ucache branch code from the ocf repository and package it.

   cd /home
   git clone https://gitee.com/kunpeng_compute/ocf.git -b UCache
   tar -zcvf lava-ocf-adaptor-1.0.0.tar.gz ocf/

2. Go to the /home directory and create an RPM build directory.
   

   The rpmbuild tool must be installed in the environment.

   yum install rpm-build

   1. Open the .rpmmacros file.

      1	vi /root/.rpmmacros

   2. Change the value of %_topdir to /home/rpmbuild. If the file does not contain this line, add it, save the file, and exit.

      

   3. Run the rpmbuild installation command again.

      1	rpmdev-setuptree

3. Open the rpmmacros file and comment out the content in the red box.

   1	vi /root/.rpmmacros

   

4. Copy the source package and SPEC file to the /home/rpmbuild subdirectory.

   1 2	cp /home/lava-ocf-adaptor-1.0.0.tar.gz /home/rpmbuild/SOURCE cp /home/ocf/lava-ocf-adaptor.spec /home/rpmbuild/SPEC

5. Compile the RPM package.

   Default package build command:

   rpmbuild -bb /home/rpmbuild/SPECS/lava-ocf-adaptor.spec

   After the compilation is complete, the following RPM packages are generated:

   

6. Install the following RPM package.

   cd /home/rpmbuild/RPMS/aarch64/
   rpm -ivh lava-ocf-adaptor-1.0.0-1.aarch64.rpm

   lava-ocf-adaptor-1.0.0-1.aarch64.rpm contains the following files:

   

   

   ocf_adaptor.h describes all external interfaces. Other header files define structures and error codes.

   To integrate the read cache into an application, add the link option -llava_cache during application compilation.