Use custom QEMU build for CentOS 7

README.md

@@ -295,9 +295,6 @@ Vitastor with single-thread NBD on the same hardware:
 
 ### CentOS
 
-- CentOS 7 build is broken because QEMU 2.0 doesn't support dynamic module loading at all.
-  A decision on this issue will be made soon - CentOS 7 build will either be removed or
-  a newer QEMU version will be packaged.
 - Add Vitastor package repository:
   - CentOS 7: `yum install https://vitastor.io/rpms/centos/7/vitastor-release-1.0-1.el7.noarch.rpm`
   - CentOS 8: `dnf install https://vitastor.io/rpms/centos/8/vitastor-release-1.0-1.el8.noarch.rpm`
@@ -308,7 +305,7 @@ Vitastor with single-thread NBD on the same hardware:
 - Enable elrepo-kernel:
   - CentOS 7: `yum install https://www.elrepo.org/elrepo-release-7.el7.elrepo.noarch.rpm`
   - CentOS 8: `dnf install https://www.elrepo.org/elrepo-release-8.el8.elrepo.noarch.rpm`
-- Install packages: `yum/dnf install vitastor lpsolve etcd kernel-ml`
+- Install packages: `yum/dnf install vitastor lpsolve etcd kernel-ml qemu-kvm`
 
 ### Building from Source
 
@@ -323,7 +320,7 @@ Vitastor with single-thread NBD on the same hardware:
 - Install node.js 10 or newer.
 - Install gcc and g++ 8.x or newer.
 - Clone https://yourcmc.ru/git/vitalif/vitastor/ with submodules.
-- Install QEMU 2.0+, get its source, begin to build it, stop the build and copy headers:
+- Install QEMU 3.0+, get its source, begin to build it, stop the build and copy headers:
    - `<qemu>/include` &rarr; `<vitastor>/qemu/include`
    - Debian:
       * Use qemu packages from the main repository

rpm/vitastor-el7.Dockerfile

@@ -1,18 +1,20 @@
 # Build packages for CentOS 7 inside a container
 # cd ..; podman build -t vitastor-el7 -v `pwd`/build:/root/build -f rpm/vitastor-el7.Dockerfile .
+# localedef -i ru_RU -f UTF-8 ru_RU.UTF-8
 
 FROM centos:7
 
 WORKDIR /root
 
 RUN yum -y --enablerepo=extras install centos-release-scl epel-release yum-utils rpm-build
-RUN yum -y install devtoolset-9-gcc-c++ devtoolset-9-libatomic-devel gperftools-devel qemu fio rh-nodejs12
-RUN yumdownloader --disablerepo=centos-sclo-rh --source qemu
+RUN yum -y install https://vitastor.io/rpms/centos/7/vitastor-release-1.0-1.el7.noarch.rpm
+RUN yum -y install devtoolset-9-gcc-c++ devtoolset-9-libatomic-devel gperftools-devel qemu-kvm fio rh-nodejs12
+RUN yumdownloader --disablerepo=centos-sclo-rh --source qemu-kvm
 RUN yumdownloader --disablerepo=centos-sclo-rh --source fio
 RUN rpm --nomd5 -i qemu*.src.rpm
 RUN rpm --nomd5 -i fio*.src.rpm
 RUN rm -f /etc/yum.repos.d/CentOS-Media.repo
-RUN cd ~/rpmbuild/SPECS && yum-builddep -y --enablerepo='*' --disablerepo=centos-sclo-rh --disablerepo=centos-sclo-rh-source --disablerepo=centos-sclo-sclo-testing qemu.spec
+RUN cd ~/rpmbuild/SPECS && yum-builddep -y --enablerepo='*' --disablerepo=centos-sclo-rh --disablerepo=centos-sclo-rh-source --disablerepo=centos-sclo-sclo-testing qemu-kvm.spec
 RUN cd ~/rpmbuild/SPECS && yum-builddep -y --enablerepo='*' --disablerepo=centos-sclo-rh --disablerepo=centos-sclo-rh-source --disablerepo=centos-sclo-sclo-testing fio.spec
 
 ADD https://vitastor.io/rpms/liburing-el7/liburing-0.7-2.el7.src.rpm /root

rpm/vitastor-el7.spec

@@ -13,7 +13,7 @@ BuildRequires:  devtoolset-9-gcc-c++
 BuildRequires:  rh-nodejs12
 BuildRequires:  rh-nodejs12-npm
 Requires:       fio = 3.7-1.el7
-Requires:       qemu = 2.0.0-1.el7.6
+Requires:       qemu-kvm = 2.0.0-1.el7.6
 Requires:       rh-nodejs12
 Requires:       rh-nodejs12-npm
 Requires:       liburing >= 0.6