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40a162f83e
In v6.0.0-rc1~439 (and friends) we tried to cache NUMA
capabilities because we assumed they are immutable. And to some
extent they are (NUMA hotplug is not a thing, is it). However,
our capabilities contain also some runtime info that can change,
e.g. hugepages pool allocation sizes or total amount of memory
per node (host side memory hotplug might change the value).
Because of the caching we might not be reporting the correct
runtime info in 'virsh capabilities'.
The NUMA caps are used in three places:
1) 'virsh capabilities'
2) domain startup, when parsing numad reply
3) parsing domain private data XML
In cases 2) and 3) we need NUMA caps to construct list of
physical CPUs that belong to NUMA nodes from numad reply. And
while this may seem static, it's not really because of possible
CPU hotplug on physical host.
There are two possible approaches:
1) build a validation mechanism that would invalidate the
cached NUMA caps, or
2) drop the caching and construct NUMA caps from scratch on
each use.
In this commit, the latter approach is implemented, because it's
easier.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1819058
Fixes: 1a1d848694
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
406 lines
11 KiB
C
406 lines
11 KiB
C
/*
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* qemu_conf.h: QEMU configuration management
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*
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* Copyright (C) 2006-2007, 2009-2013 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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#pragma once
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#include <unistd.h>
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#include "virebtables.h"
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#include "internal.h"
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#include "capabilities.h"
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#include "network_conf.h"
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#include "domain_conf.h"
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#include "checkpoint_conf.h"
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#include "snapshot_conf.h"
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#include "domain_event.h"
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#include "virthread.h"
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#include "security/security_manager.h"
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#include "virpci.h"
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#include "virusb.h"
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#include "virscsi.h"
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#include "cpu_conf.h"
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#include "driver.h"
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#include "virportallocator.h"
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#include "vircommand.h"
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#include "virthreadpool.h"
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#include "locking/lock_manager.h"
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#include "qemu_capabilities.h"
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#include "virclosecallbacks.h"
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#include "virhostdev.h"
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#include "virfile.h"
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#include "virfilecache.h"
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#include "virfirmware.h"
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#define QEMU_DRIVER_NAME "QEMU"
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typedef struct _virQEMUDriver virQEMUDriver;
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typedef virQEMUDriver *virQEMUDriverPtr;
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typedef struct _virQEMUDriverConfig virQEMUDriverConfig;
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typedef virQEMUDriverConfig *virQEMUDriverConfigPtr;
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/* Main driver config. The data in these object
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* instances is immutable, so can be accessed
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* without locking. Threads must, however, hold
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* a valid reference on the object to prevent it
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* being released while they use it.
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*
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* eg
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* g_autoptr(virQEMUDriverConfig) cfg = virQEMUDriverGetConfig(driver);
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*
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* ...do stuff with 'cfg'..
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*/
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struct _virQEMUDriverConfig {
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virObject parent;
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char *uri;
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uid_t user;
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gid_t group;
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bool dynamicOwnership;
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virBitmapPtr namespaces;
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bool rememberOwner;
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int cgroupControllers;
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char **cgroupDeviceACL;
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/* These five directories are ones libvirtd uses (so must be root:root
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* to avoid security risk from QEMU processes */
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char *configBaseDir;
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char *configDir;
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char *autostartDir;
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char *logDir;
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char *swtpmLogDir;
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char *stateDir;
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char *swtpmStateDir;
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char *slirpStateDir;
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char *dbusStateDir;
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/* These two directories are ones QEMU processes use (so must match
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* the QEMU user/group */
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char *libDir;
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char *cacheDir;
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char *saveDir;
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char *snapshotDir;
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char *checkpointDir;
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char *channelTargetDir;
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char *nvramDir;
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char *swtpmStorageDir;
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char *defaultTLSx509certdir;
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bool defaultTLSx509certdirPresent;
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bool defaultTLSx509verify;
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bool defaultTLSx509verifyPresent;
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char *defaultTLSx509secretUUID;
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bool vncAutoUnixSocket;
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bool vncTLS;
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bool vncTLSx509verify;
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bool vncTLSx509verifyPresent;
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bool vncSASL;
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char *vncTLSx509certdir;
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char *vncTLSx509secretUUID;
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char *vncListen;
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char *vncPassword;
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char *vncSASLdir;
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bool spiceTLS;
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char *spiceTLSx509certdir;
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bool spiceSASL;
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char *spiceSASLdir;
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char *spiceListen;
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char *spicePassword;
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bool spiceAutoUnixSocket;
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bool chardevTLS;
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char *chardevTLSx509certdir;
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bool chardevTLSx509verify;
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bool chardevTLSx509verifyPresent;
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char *chardevTLSx509secretUUID;
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char *migrateTLSx509certdir;
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bool migrateTLSx509verify;
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bool migrateTLSx509verifyPresent;
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char *migrateTLSx509secretUUID;
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bool migrateTLSForce;
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char *backupTLSx509certdir;
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bool backupTLSx509verify;
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bool backupTLSx509verifyPresent;
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char *backupTLSx509secretUUID;
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bool vxhsTLS;
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char *vxhsTLSx509certdir;
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char *vxhsTLSx509secretUUID;
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bool nbdTLS;
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char *nbdTLSx509certdir;
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char *nbdTLSx509secretUUID;
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unsigned int remotePortMin;
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unsigned int remotePortMax;
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unsigned int webSocketPortMin;
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unsigned int webSocketPortMax;
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virHugeTLBFSPtr hugetlbfs;
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size_t nhugetlbfs;
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char *bridgeHelperName;
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char *prHelperName;
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char *slirpHelperName;
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char *dbusDaemonName;
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bool macFilter;
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bool relaxedACS;
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bool vncAllowHostAudio;
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bool nogfxAllowHostAudio;
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bool setProcessName;
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unsigned int maxProcesses;
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unsigned int maxFiles;
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unsigned int maxThreadsPerProc;
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unsigned long long maxCore;
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bool dumpGuestCore;
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unsigned int maxQueuedJobs;
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char **securityDriverNames;
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bool securityDefaultConfined;
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bool securityRequireConfined;
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char *saveImageFormat;
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char *dumpImageFormat;
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char *snapshotImageFormat;
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char *autoDumpPath;
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bool autoDumpBypassCache;
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bool autoStartBypassCache;
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char *lockManagerName;
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int keepAliveInterval;
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unsigned int keepAliveCount;
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int seccompSandbox;
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char *migrateHost;
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/* The default for -incoming */
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char *migrationAddress;
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unsigned int migrationPortMin;
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unsigned int migrationPortMax;
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bool logTimestamp;
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bool stdioLogD;
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virFirmwarePtr *firmwares;
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size_t nfirmwares;
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unsigned int glusterDebugLevel;
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bool virtiofsdDebug;
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char *memoryBackingDir;
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uid_t swtpm_user;
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gid_t swtpm_group;
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char **capabilityfilters;
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};
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G_DEFINE_AUTOPTR_CLEANUP_FUNC(virQEMUDriverConfig, virObjectUnref);
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/* Main driver state */
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struct _virQEMUDriver {
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virMutex lock;
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/* Require lock to get reference on 'config',
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* then lockless thereafter */
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virQEMUDriverConfigPtr config;
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/* pid file FD, ensures two copies of the driver can't use the same root */
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int lockFD;
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/* Immutable pointer, self-locking APIs */
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virThreadPoolPtr workerPool;
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/* Atomic increment only */
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int lastvmid;
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/* Atomic inc/dec only */
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unsigned int nactive;
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/* Immutable values */
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bool privileged;
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char *embeddedRoot;
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/* Immutable pointers. Caller must provide locking */
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virStateInhibitCallback inhibitCallback;
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void *inhibitOpaque;
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/* Immutable pointer, self-locking APIs */
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virDomainObjListPtr domains;
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/* Immutable pointer */
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char *qemuImgBinary;
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/* Immutable pointer, lockless APIs. Pointless abstraction */
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ebtablesContext *ebtables;
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/* Require lock to get a reference on the object,
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* lockless access thereafter
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*/
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virCapsPtr caps;
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/* Lazy initialized on first use, immutable thereafter.
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* Require lock to get the pointer & do optional initialization
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*/
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virCPUDefPtr hostcpu;
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/* Immutable value */
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virArch hostarch;
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/* Immutable pointer, Immutable object */
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virDomainXMLOptionPtr xmlopt;
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/* Immutable pointer, self-locking APIs */
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virFileCachePtr qemuCapsCache;
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/* Immutable pointer, self-locking APIs */
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virObjectEventStatePtr domainEventState;
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/* Immutable pointer. self-locking APIs */
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virSecurityManagerPtr securityManager;
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virHostdevManagerPtr hostdevMgr;
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/* Immutable pointer. Unsafe APIs. XXX */
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GHashTable *sharedDevices;
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/* Immutable pointer, immutable object */
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virPortAllocatorRangePtr remotePorts;
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/* Immutable pointer, immutable object */
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virPortAllocatorRangePtr webSocketPorts;
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/* Immutable pointer, immutable object */
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virPortAllocatorRangePtr migrationPorts;
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/* Immutable pointer, lockless APIs */
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virSysinfoDefPtr hostsysinfo;
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/* Immutable pointer. lockless access */
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virLockManagerPluginPtr lockManager;
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/* Immutable pointer, self-clocking APIs */
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virCloseCallbacksPtr closeCallbacks;
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/* Immutable pointer, self-locking APIs */
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virHashAtomicPtr migrationErrors;
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};
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virQEMUDriverConfigPtr virQEMUDriverConfigNew(bool privileged,
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const char *root);
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int virQEMUDriverConfigLoadFile(virQEMUDriverConfigPtr cfg,
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const char *filename,
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bool privileged);
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int
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virQEMUDriverConfigValidate(virQEMUDriverConfigPtr cfg);
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int
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virQEMUDriverConfigSetDefaults(virQEMUDriverConfigPtr cfg);
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virQEMUDriverConfigPtr virQEMUDriverGetConfig(virQEMUDriverPtr driver);
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virCPUDefPtr virQEMUDriverGetHostCPU(virQEMUDriverPtr driver);
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virCapsPtr virQEMUDriverCreateCapabilities(virQEMUDriverPtr driver);
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virCapsPtr virQEMUDriverGetCapabilities(virQEMUDriverPtr driver,
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bool refresh);
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virDomainCapsPtr
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virQEMUDriverGetDomainCapabilities(virQEMUDriverPtr driver,
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virQEMUCapsPtr qemuCaps,
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const char *machine,
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virArch arch,
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virDomainVirtType virttype);
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typedef struct _qemuSharedDeviceEntry qemuSharedDeviceEntry;
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typedef qemuSharedDeviceEntry *qemuSharedDeviceEntryPtr;
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bool qemuSharedDeviceEntryDomainExists(qemuSharedDeviceEntryPtr entry,
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const char *name,
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int *idx)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2);
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char *qemuGetSharedDeviceKey(const char *disk_path)
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ATTRIBUTE_NONNULL(1);
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void qemuSharedDeviceEntryFree(void *payload);
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int qemuAddSharedDisk(virQEMUDriverPtr driver,
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virDomainDiskDefPtr disk,
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const char *name)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3);
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int qemuAddSharedDevice(virQEMUDriverPtr driver,
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virDomainDeviceDefPtr dev,
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const char *name)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3);
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int qemuRemoveSharedDevice(virQEMUDriverPtr driver,
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virDomainDeviceDefPtr dev,
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const char *name)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3);
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int qemuRemoveSharedDisk(virQEMUDriverPtr driver,
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virDomainDiskDefPtr disk,
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const char *name)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3);
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int qemuSetUnprivSGIO(virDomainDeviceDefPtr dev);
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int qemuDriverAllocateID(virQEMUDriverPtr driver);
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virDomainXMLOptionPtr virQEMUDriverCreateXMLConf(virQEMUDriverPtr driver,
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const char *defsecmodel);
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int qemuTranslateSnapshotDiskSourcePool(virDomainSnapshotDiskDefPtr def);
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char * qemuGetBaseHugepagePath(virQEMUDriverPtr driver,
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virHugeTLBFSPtr hugepage);
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char * qemuGetDomainHugepagePath(virQEMUDriverPtr driver,
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const virDomainDef *def,
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virHugeTLBFSPtr hugepage);
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int qemuGetDomainHupageMemPath(virQEMUDriverPtr driver,
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const virDomainDef *def,
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unsigned long long pagesize,
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char **memPath);
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int qemuGetMemoryBackingDomainPath(virQEMUDriverPtr driver,
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const virDomainDef *def,
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char **path);
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int qemuGetMemoryBackingPath(virQEMUDriverPtr driver,
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const virDomainDef *def,
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const char *alias,
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char **memPath);
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