12:12 p.m.
From: Ján Tomko <jtomko(a)redhat.com>
For mutliple reasons, the use of the QEMU driver is no longer
recommended:
1. It is still incomplete
Git statistics from '3 years ago' speak for themselves:
src/qemu: 42505 insertions(+), 31154 deletions(-)
Compared to other drivers that are mostly completed and do not
require so much attention:
src/esx: 283 insertions(+), 380 deletions(-)
src/hypervisor: 2661 insertions(+), 1342 deletions(-)
src/interface: 253 insertions(+), 305 deletions(-)
src/lxc: 906 insertions(+), 995 deletions(-)
src/secret: 77 insertions(+), 75 deletions(-)
2. It is bloated
Look at it, it's just huge!
src/qemu: 148858 lines
Compared to other, leaner drivers:
src/esx: 20284 lines
src/hypervisor: 6291 lines
src/interface: 2632 lines
src/lxc: 15946 lines
src/secret: 846 lines
And finally, my mother's favorite reason:
3. Because I said so.
Signed-off-by: Ján Tomko <jtomko(a)redhat.com>
---
libvirt.spec.in | 2 +-
meson.build | 81 ++-----------------------------------------------
2 files changed, 4 insertions(+), 79 deletions(-)
diff --git a/libvirt.spec.in b/libvirt.spec.in
index cb41ea1de1..df2b9750e3 100644
--- a/libvirt.spec.in
+++ b/libvirt.spec.in
@@ -32,7 +32,7 @@
%define arches_ch x86_64 aarch64
# The hypervisor drivers that run in libvirtd
-%define with_qemu 0%{!?_without_qemu:1}
+%define with_qemu 0
%define with_lxc 0%{!?_without_lxc:1}
%define with_libxl 0%{!?_without_libxl:1}
%define with_vbox 0%{!?_without_vbox:1}
diff --git a/meson.build b/meson.build
index 56823ca25b..4929ccb42a 100644
--- a/meson.build
+++ b/meson.build
@@ -1671,7 +1671,7 @@ elif get_option('driver_network').enabled()
endif
if udev_dep.found() and conf.has('WITH_LIBVIRTD')
- conf.set('WITH_NODE_DEVICES', 1)
+ conf.set('WITH_NODE_DEVICES', 1)
endif
if not get_option('driver_openvz').disabled() and host_machine.system() ==
'linux'
@@ -1680,83 +1680,8 @@ elif get_option('driver_openvz').enabled()
error('OpenVZ driver can be enabled on Linux only')
endif
-if not get_option('driver_qemu').disabled()
- use_qemu = true
-
- if not json_c_dep.found()
- use_qemu = false
- if get_option('driver_qemu').enabled()
- error('json-c is required to build QEMU driver')
- endif
- endif
-
- if not conf.has('WITH_LIBVIRTD')
- use_qemu = false
- if get_option('driver_qemu').enabled()
- error('libvirtd is required to build QEMU driver')
- endif
- endif
-
- if use_qemu
- conf.set('WITH_QEMU', 1)
-
- qemu_moddir = get_option('qemu_moddir')
- if qemu_moddir == ''
- qemu_moddir = libdir / 'qemu'
- endif
- conf.set_quoted('QEMU_MODDIR', qemu_moddir)
-
- qemu_datadir = get_option('qemu_datadir')
- if qemu_datadir == ''
- qemu_datadir = datadir / 'qemu'
- endif
- conf.set_quoted('QEMU_DATADIR', qemu_datadir)
-
- qemu_user = get_option('qemu_user')
- qemu_group = get_option('qemu_group')
- if (qemu_user == '' and qemu_group != '') or (qemu_user != ''
and qemu_group == '')
- error('Please specify both qemu_user and qemu_group or neither of them')
- endif
- if qemu_user == '' and qemu_group == ''
- if host_machine.system() in [ 'freebsd', 'darwin' ]
- qemu_user = 'root'
- qemu_group = 'wheel'
- else
- # RHEL and CentOS both have ID_LIKE=fedora, SLES has ID_LIKE=suse
- if (os_release.contains('fedora') or
- os_release.contains('gentoo') or
- os_release.contains('suse'))
- qemu_user = 'qemu'
- qemu_group = 'qemu'
- # Ubuntu has ID_LIKE=debian so we need to handle it first
- elif os_release.contains('ubuntu')
- qemu_user = 'libvirt-qemu'
- qemu_group = 'kvm'
- elif (os_release.contains('arch') or
- os_release.contains('debian'))
- qemu_user = 'libvirt-qemu'
- qemu_group = 'libvirt-qemu'
- else
- qemu_user = 'root'
- qemu_group = 'root'
- endif
- endif
- endif
- conf.set_quoted('QEMU_USER', qemu_user)
- conf.set_quoted('QEMU_GROUP', qemu_group)
-
- qemu_slirp_prog = find_program(
- 'slirp-helper',
- dirs: [ '/usr/bin', '/usr/libexec' ],
- required: false
- )
- if qemu_slirp_prog.found()
- qemu_slirp_path = qemu_slirp_prog.full_path()
- else
- qemu_slirp_path = '/usr/bin/slirp-helper'
- endif
- conf.set_quoted('QEMU_SLIRP_HELPER', qemu_slirp_path)
- endif
+if get_option('driver_qemu').enabled()
+ error('QEMU driver has been deprecated')
endif
if not get_option('driver_secrets').disabled() and
conf.has('WITH_LIBVIRTD')
--
2.49.0