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qemu_migration_cookie.c
1663 lines (1327 loc) · 54.2 KB
/
qemu_migration_cookie.c
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/*
* qemu_migration_cookie.c: QEMU migration cookie handling
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include <gnutls/gnutls.h>
#include <gnutls/x509.h>
#include "locking/domain_lock.h"
#include "virerror.h"
#include "virlog.h"
#include "virnetdevopenvswitch.h"
#include "virstring.h"
#include "virutil.h"
#include "qemu_domain.h"
#include "qemu_migration_cookie.h"
#include "qemu_migration_params.h"
#include "qemu_block.h"
#define VIR_FROM_THIS VIR_FROM_QEMU
VIR_LOG_INIT("qemu.qemu_migration_cookie");
VIR_ENUM_IMPL(qemuMigrationCookieFlag,
QEMU_MIGRATION_COOKIE_FLAG_LAST,
"graphics",
"lockstate",
"persistent",
"network",
"nbd",
"statistics",
"memory-hotplug",
"cpu-hotplug",
"cpu",
"allowReboot",
"capabilities",
"block-dirty-bitmaps",
);
static void
qemuMigrationCookieGraphicsFree(qemuMigrationCookieGraphics *grap)
{
if (!grap)
return;
g_free(grap->listen);
g_free(grap->tlsSubject);
g_free(grap);
}
G_DEFINE_AUTOPTR_CLEANUP_FUNC(qemuMigrationCookieGraphics,
qemuMigrationCookieGraphicsFree);
static void
qemuMigrationCookieNetworkFree(qemuMigrationCookieNetwork *network)
{
size_t i;
if (!network)
return;
if (network->net) {
for (i = 0; i < network->nnets; i++)
g_free(network->net[i].portdata);
}
g_free(network->net);
g_free(network);
}
G_DEFINE_AUTOPTR_CLEANUP_FUNC(qemuMigrationCookieNetwork,
qemuMigrationCookieNetworkFree);
static void
qemuMigrationCookieNBDFree(qemuMigrationCookieNBD *nbd)
{
if (!nbd)
return;
while (nbd->ndisks)
g_free(nbd->disks[--nbd->ndisks].target);
g_free(nbd->disks);
g_free(nbd);
}
G_DEFINE_AUTOPTR_CLEANUP_FUNC(qemuMigrationCookieNBD,
qemuMigrationCookieNBDFree);
static void
qemuMigrationCookieCapsFree(qemuMigrationCookieCaps *caps)
{
if (!caps)
return;
virBitmapFree(caps->supported);
virBitmapFree(caps->automatic);
g_free(caps);
}
G_DEFINE_AUTOPTR_CLEANUP_FUNC(qemuMigrationCookieCaps,
qemuMigrationCookieCapsFree);
static void
qemuMigrationBlockDirtyBitmapsDiskBitmapFree(qemuMigrationBlockDirtyBitmapsDiskBitmap *bmp)
{
if (!bmp)
return;
g_free(bmp->bitmapname);
g_free(bmp->alias);
g_free(bmp->sourcebitmap);
g_free(bmp);
}
G_DEFINE_AUTOPTR_CLEANUP_FUNC(qemuMigrationBlockDirtyBitmapsDiskBitmap,
qemuMigrationBlockDirtyBitmapsDiskBitmapFree);
static void
qemuMigrationBlockDirtyBitmapsDiskFree(qemuMigrationBlockDirtyBitmapsDisk *dsk)
{
if (!dsk)
return;
g_free(dsk->target);
g_slist_free_full(dsk->bitmaps,
(GDestroyNotify) qemuMigrationBlockDirtyBitmapsDiskBitmapFree);
g_free(dsk);
}
G_DEFINE_AUTOPTR_CLEANUP_FUNC(qemuMigrationBlockDirtyBitmapsDisk,
qemuMigrationBlockDirtyBitmapsDiskFree);
void
qemuMigrationCookieFree(qemuMigrationCookie *mig)
{
if (!mig)
return;
qemuMigrationCookieGraphicsFree(mig->graphics);
virDomainDefFree(mig->persistent);
qemuMigrationCookieNetworkFree(mig->network);
qemuMigrationCookieNBDFree(mig->nbd);
g_free(mig->localHostname);
g_free(mig->remoteHostname);
g_free(mig->name);
g_free(mig->lockState);
g_free(mig->lockDriver);
g_clear_pointer(&mig->jobData, virDomainJobDataFree);
virCPUDefFree(mig->cpu);
qemuMigrationCookieCapsFree(mig->caps);
g_slist_free_full(mig->blockDirtyBitmaps,
(GDestroyNotify) qemuMigrationBlockDirtyBitmapsDiskFree);
g_free(mig);
}
static char *
qemuDomainExtractTLSSubject(const char *certdir)
{
g_autofree char *certfile = NULL;
g_autofree char *subject = NULL;
g_autofree char *pemdata = NULL;
gnutls_datum_t pemdatum;
gnutls_x509_crt_t cert;
int rc;
size_t subjectlen = 256;
certfile = g_strdup_printf("%s/server-cert.pem", certdir);
if (virFileReadAll(certfile, 8192, &pemdata) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("unable to read server cert %1$s"), certfile);
return NULL;
}
rc = gnutls_x509_crt_init(&cert);
if (rc < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot initialize cert object: %1$s"),
gnutls_strerror(rc));
return NULL;
}
pemdatum.data = (unsigned char *)pemdata;
pemdatum.size = strlen(pemdata);
rc = gnutls_x509_crt_import(cert, &pemdatum, GNUTLS_X509_FMT_PEM);
if (rc < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot load cert data from %1$s: %2$s"),
certfile, gnutls_strerror(rc));
return NULL;
}
subject = g_new0(char, subjectlen + 1);
rc = gnutls_x509_crt_get_dn(cert, subject, &subjectlen);
if (rc == GNUTLS_E_SHORT_MEMORY_BUFFER) {
subject = g_realloc(subject, subjectlen + 1);
rc = gnutls_x509_crt_get_dn(cert, subject, &subjectlen);
}
if (rc != 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot get cert distinguished name: %1$s"),
gnutls_strerror(rc));
return NULL;
}
subject[subjectlen] = '\0';
return g_steal_pointer(&subject);
}
static qemuMigrationCookieGraphics *
qemuMigrationCookieGraphicsSpiceAlloc(virQEMUDriver *driver,
virDomainGraphicsDef *def,
virDomainGraphicsListenDef *glisten)
{
g_autoptr(qemuMigrationCookieGraphics) mig = g_new0(qemuMigrationCookieGraphics, 1);
const char *listenAddr;
g_autoptr(virQEMUDriverConfig) cfg = virQEMUDriverGetConfig(driver);
mig->type = VIR_DOMAIN_GRAPHICS_TYPE_SPICE;
mig->port = def->data.spice.port;
if (cfg->spiceTLS)
mig->tlsPort = def->data.spice.tlsPort;
else
mig->tlsPort = -1;
if (!glisten || !(listenAddr = glisten->address))
listenAddr = cfg->spiceListen;
if (cfg->spiceTLS &&
!(mig->tlsSubject = qemuDomainExtractTLSSubject(cfg->spiceTLSx509certdir)))
return NULL;
mig->listen = g_strdup(listenAddr);
return g_steal_pointer(&mig);
}
static qemuMigrationCookieNetwork *
qemuMigrationCookieNetworkAlloc(virQEMUDriver *driver G_GNUC_UNUSED,
virDomainDef *def)
{
g_autoptr(qemuMigrationCookieNetwork) mig = g_new0(qemuMigrationCookieNetwork, 1);
size_t i;
mig->nnets = def->nnets;
mig->net = g_new0(qemuMigrationCookieNetData, def->nnets);
for (i = 0; i < def->nnets; i++) {
virDomainNetDef *netptr;
const virNetDevVPortProfile *vport;
netptr = def->nets[i];
vport = virDomainNetGetActualVirtPortProfile(netptr);
if (vport) {
mig->net[i].vporttype = vport->virtPortType;
switch (vport->virtPortType) {
case VIR_NETDEV_VPORT_PROFILE_NONE:
case VIR_NETDEV_VPORT_PROFILE_8021QBG:
case VIR_NETDEV_VPORT_PROFILE_8021QBH:
break;
case VIR_NETDEV_VPORT_PROFILE_OPENVSWITCH:
if (virNetDevOpenvswitchGetMigrateData(&mig->net[i].portdata,
netptr->ifname) != 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Unable to run command to get OVS port data for interface %1$s"),
netptr->ifname);
return NULL;
}
break;
default:
break;
}
}
}
return g_steal_pointer(&mig);
}
qemuMigrationCookie *
qemuMigrationCookieNew(const virDomainDef *def,
const char *origname)
{
qemuMigrationCookie *mig = NULL;
unsigned char localHostUUID[VIR_UUID_BUFLEN];
g_autofree char *localHostname = NULL;
if (!(localHostname = virGetHostname()))
return NULL;
if (virGetHostUUID(localHostUUID) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Unable to obtain host UUID"));
return NULL;
}
mig = g_new0(qemuMigrationCookie, 1);
if (origname)
mig->name = g_strdup(origname);
else
mig->name = g_strdup(def->name);
memcpy(mig->uuid, def->uuid, VIR_UUID_BUFLEN);
memcpy(mig->localHostuuid, localHostUUID, VIR_UUID_BUFLEN);
mig->localHostname = g_steal_pointer(&localHostname);
return mig;
}
static int
qemuMigrationCookieAddGraphics(qemuMigrationCookie *mig,
virQEMUDriver *driver,
virDomainObj *dom)
{
size_t i = 0;
if (mig->flags & QEMU_MIGRATION_COOKIE_GRAPHICS) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Migration graphics data already present"));
return -1;
}
for (i = 0; i < dom->def->ngraphics; i++) {
if (dom->def->graphics[i]->type == VIR_DOMAIN_GRAPHICS_TYPE_SPICE) {
virDomainGraphicsListenDef *glisten =
virDomainGraphicsGetListen(dom->def->graphics[i], 0);
if (!glisten) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("missing listen element"));
return -1;
}
switch (glisten->type) {
case VIR_DOMAIN_GRAPHICS_LISTEN_TYPE_ADDRESS:
case VIR_DOMAIN_GRAPHICS_LISTEN_TYPE_NETWORK:
/* Seamless migration is supported only for listen types
* 'address and 'network'. */
if (!(mig->graphics =
qemuMigrationCookieGraphicsSpiceAlloc(driver,
dom->def->graphics[i],
glisten)))
return -1;
mig->flags |= QEMU_MIGRATION_COOKIE_GRAPHICS;
break;
case VIR_DOMAIN_GRAPHICS_LISTEN_TYPE_SOCKET:
case VIR_DOMAIN_GRAPHICS_LISTEN_TYPE_NONE:
case VIR_DOMAIN_GRAPHICS_LISTEN_TYPE_LAST:
break;
}
/* Seamless migration is supported only for one graphics. */
if (mig->graphics)
break;
}
}
return 0;
}
static int
qemuMigrationCookieAddLockstate(qemuMigrationCookie *mig,
virQEMUDriver *driver,
virDomainObj *dom)
{
qemuDomainObjPrivate *priv = dom->privateData;
if (mig->flags & QEMU_MIGRATION_COOKIE_LOCKSTATE) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Migration lockstate data already present"));
return -1;
}
if (virDomainObjGetState(dom, NULL) == VIR_DOMAIN_PAUSED) {
mig->lockState = g_strdup(priv->lockState);
} else {
if (virDomainLockProcessInquire(driver->lockManager, dom, &mig->lockState) < 0)
return -1;
}
mig->lockDriver = g_strdup(virLockManagerPluginGetName(driver->lockManager));
mig->flags |= QEMU_MIGRATION_COOKIE_LOCKSTATE;
mig->flagsMandatory |= QEMU_MIGRATION_COOKIE_LOCKSTATE;
return 0;
}
int
qemuMigrationCookieAddPersistent(qemuMigrationCookie *mig,
virDomainDef **def)
{
if (mig->flags & QEMU_MIGRATION_COOKIE_PERSISTENT) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Migration persistent data already present"));
return -1;
}
if (!def || !*def)
return 0;
mig->persistent = g_steal_pointer(def);
mig->flags |= QEMU_MIGRATION_COOKIE_PERSISTENT;
mig->flagsMandatory |= QEMU_MIGRATION_COOKIE_PERSISTENT;
return 0;
}
virDomainDef *
qemuMigrationCookieGetPersistent(qemuMigrationCookie *mig)
{
virDomainDef *def = mig->persistent;
mig->persistent = NULL;
mig->flags &= ~QEMU_MIGRATION_COOKIE_PERSISTENT;
mig->flagsMandatory &= ~QEMU_MIGRATION_COOKIE_PERSISTENT;
return def;
}
static int
qemuMigrationCookieAddNetwork(qemuMigrationCookie *mig,
virQEMUDriver *driver,
virDomainObj *dom)
{
if (mig->flags & QEMU_MIGRATION_COOKIE_NETWORK) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Network migration data already present"));
return -1;
}
if (dom->def->nnets > 0) {
mig->network = qemuMigrationCookieNetworkAlloc(driver, dom->def);
if (!mig->network)
return -1;
mig->flags |= QEMU_MIGRATION_COOKIE_NETWORK;
}
return 0;
}
static int
qemuMigrationCookieAddNBD(qemuMigrationCookie *mig,
virDomainObj *vm)
{
qemuDomainObjPrivate *priv = vm->privateData;
g_autoptr(GHashTable) stats = virHashNew(g_free);
size_t i;
int rc;
/* It is not a bug if there already is a NBD data */
qemuMigrationCookieNBDFree(mig->nbd);
mig->nbd = g_new0(qemuMigrationCookieNBD, 1);
mig->nbd->port = priv->nbdPort;
mig->flags |= QEMU_MIGRATION_COOKIE_NBD;
if (vm->def->ndisks == 0)
return 0;
mig->nbd->disks = g_new0(struct qemuMigrationCookieNBDDisk, vm->def->ndisks);
mig->nbd->ndisks = 0;
if (qemuDomainObjEnterMonitorAsync(vm, vm->job->asyncJob) < 0)
return -1;
rc = qemuMonitorBlockStatsUpdateCapacityBlockdev(priv->mon, stats);
qemuDomainObjExitMonitor(vm);
if (rc < 0)
return -1;
for (i = 0; i < vm->def->ndisks; i++) {
virDomainDiskDef *disk = vm->def->disks[i];
qemuBlockStats *entry;
if (!(entry = virHashLookup(stats, qemuBlockStorageSourceGetEffectiveNodename(disk->src))))
continue;
mig->nbd->disks[mig->nbd->ndisks].target = g_strdup(disk->dst);
mig->nbd->disks[mig->nbd->ndisks].capacity = entry->capacity;
mig->nbd->ndisks++;
}
return 0;
}
static int
qemuMigrationCookieAddStatistics(qemuMigrationCookie *mig,
virDomainObj *vm)
{
if (!vm->job->completed)
return 0;
g_clear_pointer(&mig->jobData, virDomainJobDataFree);
mig->jobData = virDomainJobDataCopy(vm->job->completed);
mig->flags |= QEMU_MIGRATION_COOKIE_STATS;
return 0;
}
static int
qemuMigrationCookieAddCPU(qemuMigrationCookie *mig,
virDomainObj *vm)
{
qemuDomainObjPrivate *priv = vm->privateData;
if (mig->cpu)
return 0;
mig->cpu = virCPUDefCopy(vm->def->cpu);
if (qemuDomainMakeCPUMigratable(vm->def->os.arch, mig->cpu,
priv->origCPU) < 0)
return -1;
mig->flags |= QEMU_MIGRATION_COOKIE_CPU;
return 0;
}
static int
qemuMigrationCookieAddCaps(qemuMigrationCookie *mig,
virDomainObj *vm,
qemuMigrationParty party)
{
qemuDomainObjPrivate *priv = vm->privateData;
qemuMigrationCookieCapsFree(mig->caps);
mig->caps = g_new0(qemuMigrationCookieCaps, 1);
if (priv->migrationCaps)
mig->caps->supported = virBitmapNewCopy(priv->migrationCaps);
else
mig->caps->supported = virBitmapNew(0);
mig->caps->automatic = qemuMigrationParamsGetAlwaysOnCaps(party);
mig->flags |= QEMU_MIGRATION_COOKIE_CAPS;
return 0;
}
static void
qemuMigrationCookieGraphicsXMLFormat(virBuffer *buf,
qemuMigrationCookieGraphics *grap)
{
g_auto(virBuffer) attrBuf = VIR_BUFFER_INITIALIZER;
g_auto(virBuffer) childBuf = VIR_BUFFER_INIT_CHILD(buf);
virBufferAsprintf(&attrBuf, " type='%s' port='%d' listen='%s'",
virDomainGraphicsTypeToString(grap->type),
grap->port, grap->listen);
if (grap->type == VIR_DOMAIN_GRAPHICS_TYPE_SPICE)
virBufferAsprintf(&attrBuf, " tlsPort='%d'", grap->tlsPort);
virBufferEscapeString(&childBuf, "<cert info='subject' value='%s'/>\n", grap->tlsSubject);
virXMLFormatElement(buf, "graphics", &attrBuf, &childBuf);
}
static void
qemuMigrationCookieNetworkXMLFormat(virBuffer *buf,
qemuMigrationCookieNetwork *optr)
{
g_auto(virBuffer) interfaceBuf = VIR_BUFFER_INIT_CHILD(buf);
size_t i;
for (i = 0; i < optr->nnets; i++) {
g_auto(virBuffer) attrBuf = VIR_BUFFER_INITIALIZER;
g_auto(virBuffer) childBuf = VIR_BUFFER_INIT_CHILD(&interfaceBuf);
/* If optr->net[i].vporttype is not set, there is nothing to transfer */
if (optr->net[i].vporttype == VIR_NETDEV_VPORT_PROFILE_NONE)
continue;
virBufferAsprintf(&attrBuf, " index='%zu' vporttype='%s'",
i, virNetDevVPortTypeToString(optr->net[i].vporttype));
virBufferEscapeString(&childBuf, "<portdata>%s</portdata>\n",
optr->net[i].portdata);
virXMLFormatElement(&interfaceBuf, "interface", &attrBuf, &childBuf);
}
virXMLFormatElement(buf, "network", NULL, &interfaceBuf);
}
static void
qemuMigrationCookieStatisticsXMLFormat(virBuffer *buf,
virDomainJobData *jobData)
{
qemuDomainJobDataPrivate *priv = jobData->privateData;
qemuMonitorMigrationStats *stats = &priv->stats.mig;
virBufferAddLit(buf, "<statistics>\n");
virBufferAdjustIndent(buf, 2);
virBufferAsprintf(buf, "<started>%llu</started>\n", jobData->started);
virBufferAsprintf(buf, "<stopped>%llu</stopped>\n", jobData->stopped);
virBufferAsprintf(buf, "<sent>%llu</sent>\n", jobData->sent);
if (jobData->timeDeltaSet)
virBufferAsprintf(buf, "<delta>%lld</delta>\n", jobData->timeDelta);
virBufferAsprintf(buf, "<%1$s>%2$llu</%1$s>\n",
VIR_DOMAIN_JOB_TIME_ELAPSED,
jobData->timeElapsed);
if (stats->downtime_set)
virBufferAsprintf(buf, "<%1$s>%2$llu</%1$s>\n",
VIR_DOMAIN_JOB_DOWNTIME,
stats->downtime);
if (stats->setup_time_set)
virBufferAsprintf(buf, "<%1$s>%2$llu</%1$s>\n",
VIR_DOMAIN_JOB_SETUP_TIME,
stats->setup_time);
virBufferAsprintf(buf, "<%1$s>%2$llu</%1$s>\n",
VIR_DOMAIN_JOB_MEMORY_TOTAL,
stats->ram_total);
virBufferAsprintf(buf, "<%1$s>%2$llu</%1$s>\n",
VIR_DOMAIN_JOB_MEMORY_PROCESSED,
stats->ram_transferred);
virBufferAsprintf(buf, "<%1$s>%2$llu</%1$s>\n",
VIR_DOMAIN_JOB_MEMORY_REMAINING,
stats->ram_remaining);
virBufferAsprintf(buf, "<%1$s>%2$llu</%1$s>\n",
VIR_DOMAIN_JOB_MEMORY_BPS,
stats->ram_bps);
if (stats->ram_duplicate_set) {
virBufferAsprintf(buf, "<%1$s>%2$llu</%1$s>\n",
VIR_DOMAIN_JOB_MEMORY_CONSTANT,
stats->ram_duplicate);
virBufferAsprintf(buf, "<%1$s>%2$llu</%1$s>\n",
VIR_DOMAIN_JOB_MEMORY_NORMAL,
stats->ram_normal);
virBufferAsprintf(buf, "<%1$s>%2$llu</%1$s>\n",
VIR_DOMAIN_JOB_MEMORY_NORMAL_BYTES,
stats->ram_normal_bytes);
}
virBufferAsprintf(buf, "<%1$s>%2$llu</%1$s>\n",
VIR_DOMAIN_JOB_MEMORY_DIRTY_RATE,
stats->ram_dirty_rate);
virBufferAsprintf(buf, "<%1$s>%2$llu</%1$s>\n",
VIR_DOMAIN_JOB_MEMORY_ITERATION,
stats->ram_iteration);
virBufferAsprintf(buf, "<%1$s>%2$llu</%1$s>\n",
VIR_DOMAIN_JOB_MEMORY_POSTCOPY_REQS,
stats->ram_postcopy_reqs);
virBufferAsprintf(buf, "<%1$s>%2$llu</%1$s>\n",
VIR_DOMAIN_JOB_MEMORY_PAGE_SIZE,
stats->ram_page_size);
virBufferAsprintf(buf, "<%1$s>%2$llu</%1$s>\n",
VIR_DOMAIN_JOB_DISK_TOTAL,
stats->disk_total);
virBufferAsprintf(buf, "<%1$s>%2$llu</%1$s>\n",
VIR_DOMAIN_JOB_DISK_PROCESSED,
stats->disk_transferred);
virBufferAsprintf(buf, "<%1$s>%2$llu</%1$s>\n",
VIR_DOMAIN_JOB_DISK_REMAINING,
stats->disk_remaining);
virBufferAsprintf(buf, "<%1$s>%2$llu</%1$s>\n",
VIR_DOMAIN_JOB_DISK_BPS,
stats->disk_bps);
if (stats->xbzrle_set) {
virBufferAsprintf(buf, "<%1$s>%2$llu</%1$s>\n",
VIR_DOMAIN_JOB_COMPRESSION_CACHE,
stats->xbzrle_cache_size);
virBufferAsprintf(buf, "<%1$s>%2$llu</%1$s>\n",
VIR_DOMAIN_JOB_COMPRESSION_BYTES,
stats->xbzrle_bytes);
virBufferAsprintf(buf, "<%1$s>%2$llu</%1$s>\n",
VIR_DOMAIN_JOB_COMPRESSION_PAGES,
stats->xbzrle_pages);
virBufferAsprintf(buf, "<%1$s>%2$llu</%1$s>\n",
VIR_DOMAIN_JOB_COMPRESSION_CACHE_MISSES,
stats->xbzrle_cache_miss);
virBufferAsprintf(buf, "<%1$s>%2$llu</%1$s>\n",
VIR_DOMAIN_JOB_COMPRESSION_OVERFLOW,
stats->xbzrle_overflow);
}
virBufferAsprintf(buf, "<%1$s>%2$d</%1$s>\n",
VIR_DOMAIN_JOB_AUTO_CONVERGE_THROTTLE,
stats->cpu_throttle_percentage);
virBufferAdjustIndent(buf, -2);
virBufferAddLit(buf, "</statistics>\n");
}
static void
qemuMigrationCookieCapsXMLFormat(virBuffer *buf,
qemuMigrationCookieCaps *caps)
{
qemuMigrationCapability cap;
virBufferAddLit(buf, "<capabilities>\n");
virBufferAdjustIndent(buf, 2);
for (cap = 0; cap < QEMU_MIGRATION_CAP_LAST; cap++) {
bool supported = false;
bool automatic = false;
ignore_value(virBitmapGetBit(caps->supported, cap, &supported));
ignore_value(virBitmapGetBit(caps->automatic, cap, &automatic));
if (supported) {
virBufferAsprintf(buf, "<cap name='%s' auto='%s'/>\n",
qemuMigrationCapabilityTypeToString(cap),
automatic ? "yes" : "no");
}
}
virBufferAdjustIndent(buf, -2);
virBufferAddLit(buf, "</capabilities>\n");
}
static void
qemuMigrationCookieNBDXMLFormat(qemuMigrationCookieNBD *nbd,
virBuffer *buf)
{
g_auto(virBuffer) attrBuf = VIR_BUFFER_INITIALIZER;
g_auto(virBuffer) childBuf = VIR_BUFFER_INIT_CHILD(buf);
size_t i;
if (nbd->port)
virBufferAsprintf(&attrBuf, " port='%d'", nbd->port);
for (i = 0; i < nbd->ndisks; i++) {
virBufferEscapeString(&childBuf, "<disk target='%s'", nbd->disks[i].target);
virBufferAsprintf(&childBuf, " capacity='%llu'/>\n", nbd->disks[i].capacity);
}
virXMLFormatElementEmpty(buf, "nbd", &attrBuf, &childBuf);
}
static void
qemuMigrationCookieBlockDirtyBitmapsFormat(virBuffer *buf,
GSList *bitmaps)
{
g_auto(virBuffer) disksBuf = VIR_BUFFER_INIT_CHILD(buf);
GSList *nextdisk;
for (nextdisk = bitmaps; nextdisk; nextdisk = nextdisk->next) {
qemuMigrationBlockDirtyBitmapsDisk *disk = nextdisk->data;
g_auto(virBuffer) diskAttrBuf = VIR_BUFFER_INITIALIZER;
g_auto(virBuffer) diskChildBuf = VIR_BUFFER_INIT_CHILD(&disksBuf);
bool hasBitmaps = false;
GSList *nextbitmap;
if (disk->skip || !disk->bitmaps)
continue;
for (nextbitmap = disk->bitmaps; nextbitmap; nextbitmap = nextbitmap->next) {
qemuMigrationBlockDirtyBitmapsDiskBitmap *bitmap = nextbitmap->data;
if (bitmap->skip)
continue;
virBufferAsprintf(&diskChildBuf,
"<bitmap name='%s' alias='%s'/>\n",
bitmap->bitmapname, bitmap->alias);
hasBitmaps = true;
}
if (!hasBitmaps)
continue;
virBufferAsprintf(&diskAttrBuf, " target='%s'", disk->target);
virXMLFormatElement(&disksBuf, "disk", &diskAttrBuf, &diskChildBuf);
}
virXMLFormatElement(buf, "blockDirtyBitmaps", NULL, &disksBuf);
}
int
qemuMigrationCookieXMLFormat(virQEMUDriver *driver,
virQEMUCaps *qemuCaps,
virBuffer *buf,
qemuMigrationCookie *mig)
{
char uuidstr[VIR_UUID_STRING_BUFLEN];
char hostuuidstr[VIR_UUID_STRING_BUFLEN];
size_t i;
virUUIDFormat(mig->uuid, uuidstr);
virUUIDFormat(mig->localHostuuid, hostuuidstr);
virBufferAddLit(buf, "<qemu-migration>\n");
virBufferAdjustIndent(buf, 2);
virBufferEscapeString(buf, "<name>%s</name>\n", mig->name);
virBufferAsprintf(buf, "<uuid>%s</uuid>\n", uuidstr);
virBufferEscapeString(buf, "<hostname>%s</hostname>\n", mig->localHostname);
virBufferAsprintf(buf, "<hostuuid>%s</hostuuid>\n", hostuuidstr);
for (i = 0; i < QEMU_MIGRATION_COOKIE_FLAG_LAST; i++) {
if (mig->flagsMandatory & (1 << i))
virBufferAsprintf(buf, "<feature name='%s'/>\n",
qemuMigrationCookieFlagTypeToString(i));
}
if ((mig->flags & QEMU_MIGRATION_COOKIE_GRAPHICS) &&
mig->graphics)
qemuMigrationCookieGraphicsXMLFormat(buf, mig->graphics);
if ((mig->flags & QEMU_MIGRATION_COOKIE_LOCKSTATE) &&
mig->lockState) {
virBufferAsprintf(buf, "<lockstate driver='%s'>\n",
mig->lockDriver);
virBufferAdjustIndent(buf, 2);
virBufferAsprintf(buf, "<leases>%s</leases>\n",
mig->lockState);
virBufferAdjustIndent(buf, -2);
virBufferAddLit(buf, "</lockstate>\n");
}
if ((mig->flags & QEMU_MIGRATION_COOKIE_PERSISTENT) &&
mig->persistent) {
if (qemuDomainDefFormatBuf(driver,
qemuCaps,
mig->persistent,
VIR_DOMAIN_XML_INACTIVE |
VIR_DOMAIN_XML_SECURE |
VIR_DOMAIN_XML_MIGRATABLE,
buf) < 0)
return -1;
}
if ((mig->flags & QEMU_MIGRATION_COOKIE_NETWORK) && mig->network)
qemuMigrationCookieNetworkXMLFormat(buf, mig->network);
if ((mig->flags & QEMU_MIGRATION_COOKIE_NBD) && mig->nbd)
qemuMigrationCookieNBDXMLFormat(mig->nbd, buf);
if (mig->flags & QEMU_MIGRATION_COOKIE_STATS && mig->jobData)
qemuMigrationCookieStatisticsXMLFormat(buf, mig->jobData);
if (mig->flags & QEMU_MIGRATION_COOKIE_CPU && mig->cpu)
virCPUDefFormatBufFull(buf, mig->cpu, NULL);
if (mig->flags & QEMU_MIGRATION_COOKIE_CAPS)
qemuMigrationCookieCapsXMLFormat(buf, mig->caps);
if (mig->flags & QEMU_MIGRATION_COOKIE_BLOCK_DIRTY_BITMAPS)
qemuMigrationCookieBlockDirtyBitmapsFormat(buf, mig->blockDirtyBitmaps);
virBufferAdjustIndent(buf, -2);
virBufferAddLit(buf, "</qemu-migration>\n");
return 0;
}
static qemuMigrationCookieGraphics *
qemuMigrationCookieGraphicsXMLParse(xmlXPathContextPtr ctxt)
{
g_autoptr(qemuMigrationCookieGraphics) grap = g_new0(qemuMigrationCookieGraphics, 1);
g_autofree char *graphicstype = NULL;
if (!(graphicstype = virXPathString("string(./graphics/@type)", ctxt))) {
virReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("missing type attribute in migration data"));
return NULL;
}
if ((grap->type = virDomainGraphicsTypeFromString(graphicstype)) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("unknown graphics type %1$s"), graphicstype);
return NULL;
}
if (virXPathInt("string(./graphics/@port)", ctxt, &grap->port) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("missing port attribute in migration data"));
return NULL;
}
if (grap->type == VIR_DOMAIN_GRAPHICS_TYPE_SPICE) {
if (virXPathInt("string(./graphics/@tlsPort)", ctxt, &grap->tlsPort) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("missing tlsPort attribute in migration data"));
return NULL;
}
}
if (!(grap->listen = virXPathString("string(./graphics/@listen)", ctxt))) {
virReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("missing listen attribute in migration data"));
return NULL;
}
/* Optional */
grap->tlsSubject = virXPathString("string(./graphics/cert[@info='subject']/@value)", ctxt);
return g_steal_pointer(&grap);
}
static qemuMigrationCookieNetwork *
qemuMigrationCookieNetworkXMLParse(xmlXPathContextPtr ctxt)
{
g_autoptr(qemuMigrationCookieNetwork) optr = g_new0(qemuMigrationCookieNetwork, 1);
size_t i;
int n;
g_autofree xmlNodePtr *interfaces = NULL;
VIR_XPATH_NODE_AUTORESTORE(ctxt)
if ((n = virXPathNodeSet("./network/interface", ctxt, &interfaces)) < 0)
return NULL;
optr->nnets = n;
optr->net = g_new0(qemuMigrationCookieNetData, optr->nnets);
for (i = 0; i < n; i++) {
g_autofree char *vporttype = NULL;
/* portdata is optional, and may not exist */
ctxt->node = interfaces[i];
optr->net[i].portdata = virXPathString("string(./portdata[1])", ctxt);
if (!(vporttype = virXMLPropString(interfaces[i], "vporttype"))) {
virReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("missing vporttype attribute in migration data"));
return NULL;
}
optr->net[i].vporttype = virNetDevVPortTypeFromString(vporttype);
}
return g_steal_pointer(&optr);
}
static qemuMigrationCookieNBD *
qemuMigrationCookieNBDXMLParse(xmlXPathContextPtr ctxt)
{
g_autoptr(qemuMigrationCookieNBD) ret = g_new0(qemuMigrationCookieNBD, 1);
g_autofree char *port = NULL;
size_t i;
int n;
g_autofree xmlNodePtr *disks = NULL;
VIR_XPATH_NODE_AUTORESTORE(ctxt)
port = virXPathString("string(./nbd/@port)", ctxt);
if (port && virStrToLong_i(port, NULL, 10, &ret->port) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Malformed nbd port '%1$s'"),
port);
return NULL;
}
/* Now check if source sent a list of disks to prealloc. We might be
* talking to an older server, so it's not an error if the list is
* missing. */
if ((n = virXPathNodeSet("./nbd/disk", ctxt, &disks)) > 0) {
ret->disks = g_new0(struct qemuMigrationCookieNBDDisk, n);