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94c88b4837
Cherry-picked from b23754534193fb7a1e31306d94ae5f09759a0aa4
As a consequence of the cgroup layout changes from commit '632f78ca', the
qemuDomainGetSchedulerParameters[Flags]()' and qemuGetSchedulerType() APIs
failed to return data for a non running domain. This can be seen through
a 'virsh schedinfo <domain>' command which returns:
Scheduler : Unknown
error: Requested operation is not valid: cgroup CPU controller is not mounted
Prior to that change a non running domain would return:
Scheduler : posix
cpu_shares : 0
vcpu_period : 0
vcpu_quota : 0
emulator_period: 0
emulator_quota : 0
This patch will restore the capability to return configuration only data
for a non running domain regardless of whether cgroups are available.
Conflicts:
src/qemu/qemu_driver.c
* Resolved conflict by using former qemuCgroupHasController() rather than
virCgroupHasController()
* Needed to add the code to fetch the 'vm'
vm = virDomainObjListFindByUUID(driver->domains, dom->uuid);
if (vm == NULL) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("No such domain %s"), dom->uuid);
goto cleanup;
}
* Used 'ret = strdup("posix");' rather than VIR_STRDUP(ret, "posix");
and added the virReportOOMError(); on failure.
LibVirt : simple API for virtualization
Libvirt is a C toolkit to interact with the virtualization capabilities
of recent versions of Linux (and other OSes). It is free software
available under the GNU Lesser General Public License. Virtualization of
the Linux Operating System means the ability to run multiple instances of
Operating Systems concurrently on a single hardware system where the basic
resources are driven by a Linux instance. The library aim at providing
long term stable C API initially for the Xen paravirtualization but
should be able to integrate other virtualization mechanisms if needed.
Daniel Veillard <veillard@redhat.com>