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4882618ed1
If we don't properly clean up all processes in the
machine-<vmname>.scope systemd won't remove the cgroup and subsequent vm
starts fail with
'CreateMachine: File exists'
Additional processes can e.g. be added via
echo $PID > /sys/fs/cgroup/systemd/machine.slice/machine-${VMNAME}.scope/tasks
but there are other cases like
http://bugs.debian.org/761521
Invoke TerminateMachine to be on the safe side since systemd tracks the
cgroup anyway. This is a noop if all processes have terminated already.
73 lines
2.9 KiB
C
73 lines
2.9 KiB
C
/*
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* qemu_cgroup.h: QEMU cgroup management
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*
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* Copyright (C) 2006-2007, 2009-2014 Red Hat, Inc.
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* Copyright (C) 2006 Daniel P. Berrange
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <http://www.gnu.org/licenses/>.
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*
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* Author: Daniel P. Berrange <berrange@redhat.com>
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*/
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#ifndef __QEMU_CGROUP_H__
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# define __QEMU_CGROUP_H__
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# include "virusb.h"
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# include "vircgroup.h"
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# include "domain_conf.h"
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# include "qemu_conf.h"
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int qemuSetImageCgroup(virDomainObjPtr vm,
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virStorageSourcePtr src,
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bool deny);
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int qemuSetupDiskCgroup(virDomainObjPtr vm,
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virDomainDiskDefPtr disk);
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int qemuTeardownDiskCgroup(virDomainObjPtr vm,
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virDomainDiskDefPtr disk);
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int qemuSetupHostdevCGroup(virDomainObjPtr vm,
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virDomainHostdevDefPtr dev)
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ATTRIBUTE_RETURN_CHECK;
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int qemuTeardownHostdevCgroup(virDomainObjPtr vm,
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virDomainHostdevDefPtr dev)
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ATTRIBUTE_RETURN_CHECK;
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int qemuConnectCgroup(virQEMUDriverPtr driver,
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virDomainObjPtr vm);
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int qemuSetupCgroup(virQEMUDriverPtr driver,
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virDomainObjPtr vm,
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virBitmapPtr nodemask);
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int qemuSetupCgroupPostInit(virDomainObjPtr vm,
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virBitmapPtr nodemask);
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int qemuSetupCgroupVcpuBW(virCgroupPtr cgroup,
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unsigned long long period,
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long long quota);
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int qemuSetupCgroupVcpuPin(virCgroupPtr cgroup,
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virDomainVcpuPinDefPtr *vcpupin,
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int nvcpupin,
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int vcpuid);
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int qemuSetupCgroupEmulatorPin(virCgroupPtr cgroup, virBitmapPtr cpumask);
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int qemuSetupCgroupIOThreadsPin(virCgroupPtr cgroup,
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virDomainVcpuPinDefPtr *iothreadspin,
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int niothreadspin,
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int iothreadid);
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int qemuSetupCgroupForVcpu(virDomainObjPtr vm);
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int qemuSetupCgroupForIOThreads(virDomainObjPtr vm);
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int qemuSetupCgroupForEmulator(virQEMUDriverPtr driver,
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virDomainObjPtr vm,
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virBitmapPtr nodemask);
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int qemuRemoveCgroup(virQEMUDriverPtr driver, virDomainObjPtr vm);
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int qemuAddToCgroup(virDomainObjPtr vm);
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#endif /* __QEMU_CGROUP_H__ */
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