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632f78caaf
Instead of calling virCgroupForDomain every time we need the virCgrouPtr instance, just do it once at Vm startup and cache a reference to the object in qemuDomainObjPrivatePtr until shutdown of the VM. Removing the virCgroupPtr from the QEMU driver state also means we don't have stale mount info, if someone mounts the cgroups filesystem after libvirtd has been started Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
351 lines
13 KiB
C
351 lines
13 KiB
C
/*
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* qemu_domain.h: QEMU domain private state
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*
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* Copyright (C) 2006-2013 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_DOMAIN_H__
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# define __QEMU_DOMAIN_H__
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# include "virthread.h"
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# include "vircgroup.h"
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# include "domain_conf.h"
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# include "snapshot_conf.h"
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# include "qemu_monitor.h"
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# include "qemu_agent.h"
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# include "qemu_conf.h"
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# include "qemu_capabilities.h"
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# include "virchrdev.h"
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# define QEMU_EXPECTED_VIRT_TYPES \
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((1 << VIR_DOMAIN_VIRT_QEMU) | \
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(1 << VIR_DOMAIN_VIRT_KQEMU) | \
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(1 << VIR_DOMAIN_VIRT_KVM) | \
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(1 << VIR_DOMAIN_VIRT_XEN))
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# define QEMU_DOMAIN_FORMAT_LIVE_FLAGS \
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(VIR_DOMAIN_XML_SECURE | \
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VIR_DOMAIN_XML_UPDATE_CPU)
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# if ULONG_MAX == 4294967295
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/* Qemu has a 64-bit limit, but we are limited by our historical choice of
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* representing bandwidth in a long instead of a 64-bit int. */
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# define QEMU_DOMAIN_MIG_BANDWIDTH_MAX ULONG_MAX
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# else
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# define QEMU_DOMAIN_MIG_BANDWIDTH_MAX (INT64_MAX / (1024 * 1024))
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# endif
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# define JOB_MASK(job) (1 << (job - 1))
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# define DEFAULT_JOB_MASK \
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(JOB_MASK(QEMU_JOB_QUERY) | \
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JOB_MASK(QEMU_JOB_DESTROY) | \
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JOB_MASK(QEMU_JOB_ABORT))
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/* Jobs which have to be tracked in domain state XML. */
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# define QEMU_DOMAIN_TRACK_JOBS \
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(JOB_MASK(QEMU_JOB_DESTROY) | \
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JOB_MASK(QEMU_JOB_ASYNC))
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/* Only 1 job is allowed at any time
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* A job includes *all* monitor commands, even those just querying
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* information, not merely actions */
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enum qemuDomainJob {
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QEMU_JOB_NONE = 0, /* Always set to 0 for easy if (jobActive) conditions */
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QEMU_JOB_QUERY, /* Doesn't change any state */
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QEMU_JOB_DESTROY, /* Destroys the domain (cannot be masked out) */
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QEMU_JOB_SUSPEND, /* Suspends (stops vCPUs) the domain */
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QEMU_JOB_MODIFY, /* May change state */
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QEMU_JOB_ABORT, /* Abort current async job */
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QEMU_JOB_MIGRATION_OP, /* Operation influencing outgoing migration */
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/* The following two items must always be the last items before JOB_LAST */
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QEMU_JOB_ASYNC, /* Asynchronous job */
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QEMU_JOB_ASYNC_NESTED, /* Normal job within an async job */
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QEMU_JOB_LAST
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};
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VIR_ENUM_DECL(qemuDomainJob)
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/* Async job consists of a series of jobs that may change state. Independent
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* jobs that do not change state (and possibly others if explicitly allowed by
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* current async job) are allowed to be run even if async job is active.
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*/
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enum qemuDomainAsyncJob {
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QEMU_ASYNC_JOB_NONE = 0,
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QEMU_ASYNC_JOB_MIGRATION_OUT,
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QEMU_ASYNC_JOB_MIGRATION_IN,
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QEMU_ASYNC_JOB_SAVE,
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QEMU_ASYNC_JOB_DUMP,
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QEMU_ASYNC_JOB_SNAPSHOT,
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QEMU_ASYNC_JOB_LAST
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};
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VIR_ENUM_DECL(qemuDomainAsyncJob)
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struct qemuDomainJobObj {
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virCond cond; /* Use to coordinate jobs */
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enum qemuDomainJob active; /* Currently running job */
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int owner; /* Thread which set current job */
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virCond asyncCond; /* Use to coordinate with async jobs */
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enum qemuDomainAsyncJob asyncJob; /* Currently active async job */
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int asyncOwner; /* Thread which set current async job */
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int phase; /* Job phase (mainly for migrations) */
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unsigned long long mask; /* Jobs allowed during async job */
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unsigned long long start; /* When the async job started */
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bool dump_memory_only; /* use dump-guest-memory to do dump */
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qemuMonitorMigrationStatus status; /* Raw async job progress data */
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virDomainJobInfo info; /* Processed async job progress data */
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bool asyncAbort; /* abort of async job requested */
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};
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typedef struct _qemuDomainPCIAddressSet qemuDomainPCIAddressSet;
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typedef qemuDomainPCIAddressSet *qemuDomainPCIAddressSetPtr;
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typedef void (*qemuDomainCleanupCallback)(virQEMUDriverPtr driver,
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virDomainObjPtr vm);
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typedef struct _qemuDomainCCWAddressSet qemuDomainCCWAddressSet;
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typedef qemuDomainCCWAddressSet *qemuDomainCCWAddressSetPtr;
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typedef struct _qemuDomainObjPrivate qemuDomainObjPrivate;
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typedef qemuDomainObjPrivate *qemuDomainObjPrivatePtr;
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struct _qemuDomainObjPrivate {
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struct qemuDomainJobObj job;
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qemuMonitorPtr mon;
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virDomainChrSourceDefPtr monConfig;
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int monJSON;
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bool monError;
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unsigned long long monStart;
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qemuAgentPtr agent;
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bool agentError;
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unsigned long long agentStart;
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bool gotShutdown;
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bool beingDestroyed;
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char *pidfile;
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int nvcpupids;
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int *vcpupids;
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qemuDomainPCIAddressSetPtr pciaddrs;
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qemuDomainCCWAddressSetPtr ccwaddrs;
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int persistentAddrs;
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virQEMUCapsPtr qemuCaps;
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char *lockState;
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bool fakeReboot;
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int jobs_queued;
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unsigned long migMaxBandwidth;
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char *origname;
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int nbdPort; /* Port used for migration with NBD */
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virChrdevsPtr devs;
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qemuDomainCleanupCallback *cleanupCallbacks;
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size_t ncleanupCallbacks;
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size_t ncleanupCallbacks_max;
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virCgroupPtr cgroup;
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};
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struct qemuDomainWatchdogEvent
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{
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virDomainObjPtr vm;
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int action;
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};
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const char *qemuDomainAsyncJobPhaseToString(enum qemuDomainAsyncJob job,
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int phase);
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int qemuDomainAsyncJobPhaseFromString(enum qemuDomainAsyncJob job,
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const char *phase);
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void qemuDomainEventFlush(int timer, void *opaque);
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void qemuDomainEventQueue(virQEMUDriverPtr driver,
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virDomainEventPtr event);
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int qemuDomainObjBeginJob(virQEMUDriverPtr driver,
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virDomainObjPtr obj,
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enum qemuDomainJob job)
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ATTRIBUTE_RETURN_CHECK;
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int qemuDomainObjBeginAsyncJob(virQEMUDriverPtr driver,
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virDomainObjPtr obj,
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enum qemuDomainAsyncJob asyncJob)
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ATTRIBUTE_RETURN_CHECK;
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int qemuDomainObjBeginNestedJob(virQEMUDriverPtr driver,
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virDomainObjPtr obj,
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enum qemuDomainAsyncJob asyncJob)
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ATTRIBUTE_RETURN_CHECK;
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bool qemuDomainObjEndJob(virQEMUDriverPtr driver,
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virDomainObjPtr obj)
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ATTRIBUTE_RETURN_CHECK;
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bool qemuDomainObjEndAsyncJob(virQEMUDriverPtr driver,
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virDomainObjPtr obj)
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ATTRIBUTE_RETURN_CHECK;
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void qemuDomainObjAbortAsyncJob(virDomainObjPtr obj);
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void qemuDomainObjSetJobPhase(virQEMUDriverPtr driver,
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virDomainObjPtr obj,
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int phase);
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void qemuDomainObjSetAsyncJobMask(virDomainObjPtr obj,
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unsigned long long allowedJobs);
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void qemuDomainObjRestoreJob(virDomainObjPtr obj,
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struct qemuDomainJobObj *job);
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void qemuDomainObjTransferJob(virDomainObjPtr obj);
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void qemuDomainObjDiscardAsyncJob(virQEMUDriverPtr driver,
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virDomainObjPtr obj);
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void qemuDomainObjReleaseAsyncJob(virDomainObjPtr obj);
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void qemuDomainObjEnterMonitor(virQEMUDriverPtr driver,
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virDomainObjPtr obj)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2);
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void qemuDomainObjExitMonitor(virQEMUDriverPtr driver,
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virDomainObjPtr obj)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2);
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int qemuDomainObjEnterMonitorAsync(virQEMUDriverPtr driver,
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virDomainObjPtr obj,
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enum qemuDomainAsyncJob asyncJob)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
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void qemuDomainObjEnterAgent(virDomainObjPtr obj)
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ATTRIBUTE_NONNULL(1);
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void qemuDomainObjExitAgent(virDomainObjPtr obj)
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ATTRIBUTE_NONNULL(1);
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void qemuDomainObjEnterRemote(virDomainObjPtr obj)
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ATTRIBUTE_NONNULL(1);
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void qemuDomainObjExitRemote(virDomainObjPtr obj)
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ATTRIBUTE_NONNULL(1);
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int qemuDomainDefFormatBuf(virQEMUDriverPtr driver,
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virDomainDefPtr vm,
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unsigned int flags,
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virBuffer *buf);
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char *qemuDomainDefFormatXML(virQEMUDriverPtr driver,
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virDomainDefPtr vm,
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unsigned int flags);
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char *qemuDomainFormatXML(virQEMUDriverPtr driver,
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virDomainObjPtr vm,
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unsigned int flags);
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char *qemuDomainDefFormatLive(virQEMUDriverPtr driver,
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virDomainDefPtr def,
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bool inactive,
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bool compatible);
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void qemuDomainObjTaint(virQEMUDriverPtr driver,
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virDomainObjPtr obj,
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enum virDomainTaintFlags taint,
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int logFD);
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void qemuDomainObjCheckTaint(virQEMUDriverPtr driver,
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virDomainObjPtr obj,
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int logFD);
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void qemuDomainObjCheckDiskTaint(virQEMUDriverPtr driver,
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virDomainObjPtr obj,
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virDomainDiskDefPtr disk,
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int logFD);
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void qemuDomainObjCheckNetTaint(virQEMUDriverPtr driver,
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virDomainObjPtr obj,
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virDomainNetDefPtr net,
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int logFD);
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int qemuDomainCreateLog(virQEMUDriverPtr driver, virDomainObjPtr vm, bool append);
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int qemuDomainOpenLog(virQEMUDriverPtr driver, virDomainObjPtr vm, off_t pos);
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int qemuDomainAppendLog(virQEMUDriverPtr driver,
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virDomainObjPtr vm,
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int logFD,
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const char *fmt, ...) ATTRIBUTE_FMT_PRINTF(4, 5);
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const char *qemuFindQemuImgBinary(virQEMUDriverPtr driver);
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int qemuDomainSnapshotWriteMetadata(virDomainObjPtr vm,
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virDomainSnapshotObjPtr snapshot,
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char *snapshotDir);
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int qemuDomainSnapshotForEachQcow2(virQEMUDriverPtr driver,
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virDomainObjPtr vm,
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virDomainSnapshotObjPtr snap,
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const char *op,
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bool try_all);
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int qemuDomainSnapshotDiscard(virQEMUDriverPtr driver,
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virDomainObjPtr vm,
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virDomainSnapshotObjPtr snap,
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bool update_current,
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bool metadata_only);
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typedef struct _virQEMUSnapRemove virQEMUSnapRemove;
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typedef virQEMUSnapRemove *virQEMUSnapRemovePtr;
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struct _virQEMUSnapRemove {
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virQEMUDriverPtr driver;
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virDomainObjPtr vm;
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int err;
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bool metadata_only;
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bool current;
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};
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void qemuDomainSnapshotDiscardAll(void *payload,
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const void *name,
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void *data);
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int qemuDomainSnapshotDiscardAllMetadata(virQEMUDriverPtr driver,
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virDomainObjPtr vm);
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void qemuDomainRemoveInactive(virQEMUDriverPtr driver,
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virDomainObjPtr vm);
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void qemuDomainSetFakeReboot(virQEMUDriverPtr driver,
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virDomainObjPtr vm,
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bool value);
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bool qemuDomainJobAllowed(qemuDomainObjPrivatePtr priv,
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enum qemuDomainJob job);
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int qemuDomainCheckDiskPresence(virQEMUDriverPtr driver,
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virDomainObjPtr vm,
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bool start_with_state);
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int qemuDomainDetermineDiskChain(virQEMUDriverPtr driver,
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virDomainDiskDefPtr disk,
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bool force);
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int qemuDomainCleanupAdd(virDomainObjPtr vm,
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qemuDomainCleanupCallback cb);
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void qemuDomainCleanupRemove(virDomainObjPtr vm,
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qemuDomainCleanupCallback cb);
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void qemuDomainCleanupRun(virQEMUDriverPtr driver,
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virDomainObjPtr vm);
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extern virDomainXMLPrivateDataCallbacks virQEMUDriverPrivateDataCallbacks;
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extern virDomainXMLNamespace virQEMUDriverDomainXMLNamespace;
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extern virDomainDefParserConfig virQEMUDriverDomainDefParserConfig;
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#endif /* __QEMU_DOMAIN_H__ */
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