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qemu: Send updated CPU in migration cookie

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Since the domain XML send during migration uses the original guest CPU
definition but we still want the destination to enforce ABI if it is new
enough, we send the live updated CPU definition in a migration cookie.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
This commit is contained in:
Jiri Denemark 2017-05-26 17:06:56 +02:00
parent b0a16641fa
commit 48bc3053b8
3 changed files with 40 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
src/qemu/qemu_migration.c
View File

@ -2020,6 +2020,9 @@ qemuMigrationBeginPhase(virQEMUDriverPtr driver,
vm->newDef && !qemuDomainVcpuHotplugIsInOrder(vm->newDef)))
cookieFlags |= QEMU_MIGRATION_COOKIE_CPU_HOTPLUG;
if (priv->origCPU)
cookieFlags |= QEMU_MIGRATION_COOKIE_CPU;
if (!(mig = qemuMigrationEatCookie(driver, vm, NULL, 0, 0)))
goto cleanup;
@ -2644,7 +2647,8 @@ qemuMigrationPrepareAny(virQEMUDriverPtr driver,
QEMU_MIGRATION_COOKIE_LOCKSTATE |
QEMU_MIGRATION_COOKIE_NBD |
QEMU_MIGRATION_COOKIE_MEMORY_HOTPLUG |
QEMU_MIGRATION_COOKIE_CPU_HOTPLUG)))
QEMU_MIGRATION_COOKIE_CPU_HOTPLUG |
QEMU_MIGRATION_COOKIE_CPU)))
goto cleanup;
if (STREQ_NULLABLE(protocol, "rdma") &&

31
src/qemu/qemu_migration_cookie.c
View File

@ -48,7 +48,8 @@ VIR_ENUM_IMPL(qemuMigrationCookieFlag,
"nbd",
"statistics",
"memory-hotplug",
"cpu-hotplug");
"cpu-hotplug",
"cpu");
static void
@ -109,6 +110,7 @@ qemuMigrationCookieFree(qemuMigrationCookiePtr mig)
VIR_FREE(mig->lockState);
VIR_FREE(mig->lockDriver);
VIR_FREE(mig->jobInfo);
virCPUDefFree(mig->cpu);
VIR_FREE(mig);
}
@ -519,6 +521,22 @@ qemuMigrationCookieAddStatistics(qemuMigrationCookiePtr mig,
}
static int
qemuMigrationCookieAddCPU(qemuMigrationCookiePtr mig,
virDomainObjPtr vm)
{
if (mig->cpu)
return 0;
if (!(mig->cpu = virCPUDefCopy(vm->def->cpu)))
return -1;
mig->flags |= QEMU_MIGRATION_COOKIE_CPU;
return 0;
}
static void
qemuMigrationCookieGraphicsXMLFormat(virBufferPtr buf,
qemuMigrationCookieGraphicsPtr grap)
@ -755,6 +773,9 @@ qemuMigrationCookieXMLFormat(virQEMUDriverPtr driver,
if (mig->flags & QEMU_MIGRATION_COOKIE_STATS && mig->jobInfo)
qemuMigrationCookieStatisticsXMLFormat(buf, mig->jobInfo);
if (mig->flags & QEMU_MIGRATION_COOKIE_CPU && mig->cpu)
virCPUDefFormatBufFull(buf, mig->cpu, NULL, false);
virBufferAdjustIndent(buf, -2);
virBufferAddLit(buf, "</qemu-migration>\n");
return 0;
@ -1198,6 +1219,10 @@ qemuMigrationCookieXMLParse(qemuMigrationCookiePtr mig,
(!(mig->jobInfo = qemuMigrationCookieStatisticsXMLParse(ctxt))))
goto error;
if (flags & QEMU_MIGRATION_COOKIE_CPU &&
virCPUDefParseXML(ctxt, "./cpu[1]", VIR_CPU_TYPE_GUEST, &mig->cpu) < 0)
goto error;
virObjectUnref(caps);
return 0;
@ -1274,6 +1299,10 @@ qemuMigrationBakeCookie(qemuMigrationCookiePtr mig,
if (flags & QEMU_MIGRATION_COOKIE_CPU_HOTPLUG)
mig->flagsMandatory |= QEMU_MIGRATION_COOKIE_CPU_HOTPLUG;
if (flags & QEMU_MIGRATION_COOKIE_CPU &&
qemuMigrationCookieAddCPU(mig, dom) < 0)
return -1;
if (!(*cookieout = qemuMigrationCookieXMLFormatStr(driver, mig)))
return -1;

5
src/qemu/qemu_migration_cookie.h
View File

@ -28,6 +28,7 @@ typedef enum {
QEMU_MIGRATION_COOKIE_FLAG_STATS,
QEMU_MIGRATION_COOKIE_FLAG_MEMORY_HOTPLUG,
QEMU_MIGRATION_COOKIE_FLAG_CPU_HOTPLUG,
QEMU_MIGRATION_COOKIE_FLAG_CPU,
QEMU_MIGRATION_COOKIE_FLAG_LAST
} qemuMigrationCookieFlags;
@ -43,6 +44,7 @@ typedef enum {
QEMU_MIGRATION_COOKIE_STATS = (1 << QEMU_MIGRATION_COOKIE_FLAG_STATS),
QEMU_MIGRATION_COOKIE_MEMORY_HOTPLUG = (1 << QEMU_MIGRATION_COOKIE_FLAG_MEMORY_HOTPLUG),
QEMU_MIGRATION_COOKIE_CPU_HOTPLUG = (1 << QEMU_MIGRATION_COOKIE_FLAG_CPU_HOTPLUG),
QEMU_MIGRATION_COOKIE_CPU = (1 << QEMU_MIGRATION_COOKIE_FLAG_CPU),
} qemuMigrationCookieFeatures;
typedef struct _qemuMigrationCookieGraphics qemuMigrationCookieGraphics;
@ -122,6 +124,9 @@ struct _qemuMigrationCookie {
/* If (flags & QEMU_MIGRATION_COOKIE_STATS) */
qemuDomainJobInfoPtr jobInfo;
/* If flags & QEMU_MIGRATION_COOKIE_CPU */
virCPUDefPtr cpu;
};