On 10/09/12 18:08, Osier Yang wrote:
Various APIs use cgroup to either set or get the statistics of
host or guest. Hotplug or unhotplug new vcpus without creating
or removing the cgroup for the vcpus could cause problems for
those APIs. E.g.
% virsh vcpucount dom
maximum config 10
maximum live 10
current config 1
current live 1
% virsh setvcpu dom 2
% virsh schedinfo dom --set vcpu_quota=1000
Scheduler : posix
error: Unable to find vcpu cgroup for rhel6.2(vcpu: 1): No such file or
directory
This patch fixes the problem by creating cgroups for each of the
onlined vcpus, and destroying cgroups for each of the offlined
vcpus.
---
src/qemu/qemu_driver.c | 53 ++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 53 insertions(+), 0 deletions(-)
s/unhotplug/hotunplug/g in your patch
The code looks fine, so Martin's ACK stands.
Peter
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