在配置好依赖的编译容器中编译Ceph，并把编译的RPM包拷贝到部署容器中用于镜像制作。

进入编译容器。

podman exec -it openeuler2203sp4_build /bin/bash

在“/home”目录下载并解压ceph-17.2.8源码。

cd /home
wget https://download.ceph.com/tarballs/ceph-17.2.8.tar.gz --no-check-certificate
tar zxvf ceph-17.2.8.tar.gz

wget命令是从互联网下载文件，需要确保环境联网。

修改ceph.spec文件。

cd ceph-17.2.8
sed -i 's/redhat-rpm-config/openEuler-rpm-config/g' ceph.spec
sed -i 's#%if 0%{?fedora} || 0%{?rhel}#%if 0%{?fedora} || 0%{?rhel} || 0%{?openEuler}#' ceph.spec
sed -i 's#%if 0%{?rhel} || 0%{?fedora}#%if 0%{?rhel} || 0%{?fedora} || 0%{?openEuler}#' ceph.spec
sed -i 's#%if 0%{?fedora} || 0%{?suse_version} > 1500 || 0%{?rhel} == 9 || 0%{?openEuler}#%if 0%{?fedora} || 0%{?suse_version} > 1500 || 0%{?rhel} == 9#' ceph.spec
sed -i '1a\%define _binaries_in_noarch_packages_terminate_build 0' ceph.spec
sed -i '2a\%define _unpackaged_files_terminate_build 0' ceph.spec

编译Ceph。
1 2 3 4 5
cd .. tar cf ceph-17.2.8.tar.bz2 ceph-17.2.8/ cp ceph-17.2.8/ceph.spec /root/rpmbuild/SPECS/ cp ceph-17.2.8.tar.bz2 /root/rpmbuild/SOURCES/ rpmbuild -bb /root/rpmbuild/SPECS/ceph.spec
- 编译Ceph的过程中，至少需要100GB的磁盘空间存放临时文件，请注意为“/root/rpmbuild”目录预留充足空间。
- 编译Ceph的过程中，需要确保环境联网。
- Ceph 17.2.8版本会有OSD偶尔不稳定重启的异常，详见Ceph 17.2.8跑长稳时报错。

编译selinux-policy依赖（Ceph 17.2.8版本需要编译selinux-policy依赖，Ceph 17.2.7及以下版本可跳过此步骤）。

git clone https://gitee.com/src-openeuler/selinux-policy.git
cd selinux-policy
git checkout -b 2203sp3 origin/openEuler-22.03-LTS-SP3
cd ..
cp selinux-policy/* /root/rpmbuild/SOURCES/
cp selinux-policy/selinux-policy.spec /root/rpmbuild/SPECS/
rpmbuild -bb /root/rpmbuild/SPECS/selinux-policy.spec

将编译好的RPM包拷贝到“home”中。

mv /root/rpmbuild/RPMS/aarch64 /home/local_rpm/
mv /root/rpmbuild/RPMS/noarch /home/local_rpm/

在物理机上将编译好的RPM包导入到部署容器。

podman cp openeuler2203sp4_build:/home/local_rpm openeuler2203sp4_release:/home/

若Ceph源码“src/osd/SnapMapper.cc”与fmt包的版本不匹配时，会出现编译报错，如图1 编译报错所示。报错时需要将“src/osd/SnapMapper.cc”文件中fmt::format相关代码行进行注释后重新编译。

修改类似如下，共涉及4处修改。

233行 - 234行
272行 - 275行
321行 - 324行
327行 - 329行

tl::expected<SnapMapper::object_snaps, Scrub::SnapMapReaderI::result_t>
SnapMapper::get_snaps_common(const hobject_t &oid) const
{
 ceph_assert(check(oid));
 set<string> keys{to_object_key(oid)};
//  dout(20) << fmt::format("{}: key string: {} oid:{}", __func__, keys, oid)
//         << dendl;
    235
 map<string, ceph::buffer::list> got;
...
std::set<std::string> SnapMapper::to_raw_keys(
 const hobject_t &clone,
 const std::set<snapid_t> &snaps) const
{
 std::set<std::string> keys;
 for (auto snap : snaps) {
   keys.insert(to_raw_key(snap, clone));
 }
//  dout(20) << fmt::format(
//              "{}: clone:{} snaps:{} -> keys: {}", __func__, clone, snaps,
//              keys)
//         << dendl;
 return keys;
}
...
 std::set<snapid_t> snaps_from_mapping;
 for (auto &[k, v] : kvmap) {
   dout(20) << __func__ << " " << hoid << " " << k << dendl;
   // extract the object ID from the value fetched for an SNA mapping key
   auto [sn, obj] = SnapMapper::from_raw(v);
   if (obj != hoid) {
     dout(1) << fmt::format(
                  "{}: unexpected object ID {} for key{} (expected {})",
                  __func__, obj, k, hoid)
             << dendl;
     return tl::unexpected(result_t{code_t::inconsistent});
   }
   snaps_from_mapping.insert(sn);
 }
    319
 if (snaps_from_mapping != *obj_snaps) {
//    dout(10) << fmt::format(
//                "{}: hoid:{} -> mapper internal inconsistency ({} vs {})",
//                __func__, hoid, *obj_snaps, snaps_from_mapping)
//           << dendl;
   return tl::unexpected(result_t{code_t::inconsistent});
 }
// dout(10) << fmt::format(
//              "{}: snaps for {}: {}", __func__, hoid, snaps_from_mapping)
//         << dendl;
 return obj_snaps;
}

图1 编译报错

在编译容器中编译Ceph