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libvirt/484cc321-fix-spice-migration.patch
2013-10-15 03:27:06 +00:00

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commit 484cc3217b73b865f00bf42a9c12187b37200699
Author: Martin Kletzander <mkletzan@redhat.com>
Date: Fri Sep 20 16:40:20 2013 +0200
qemu: Fix seamless SPICE migration
Since the wait is done during migration (still inside
QEMU_ASYNC_JOB_MIGRATION_OUT), the code should enter the monitor as such
in order to prohibit all other jobs from interfering in the meantime.
This patch fixes bug #1009886 in which qemuDomainGetBlockInfo was
waiting on the monitor condition and after GetSpiceMigrationStatus
mangled its internal data, the daemon crashed.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1009886
Index: libvirt-1.1.2/src/qemu/qemu_migration.c
===================================================================
--- libvirt-1.1.2.orig/src/qemu/qemu_migration.c
+++ libvirt-1.1.2/src/qemu/qemu_migration.c
@@ -1598,7 +1598,10 @@ qemuMigrationWaitForSpice(virQEMUDriverP
/* Poll every 50ms for progress & to allow cancellation */
struct timespec ts = { .tv_sec = 0, .tv_nsec = 50 * 1000 * 1000ull };
- qemuDomainObjEnterMonitor(driver, vm);
+ if (qemuDomainObjEnterMonitorAsync(driver, vm,
+ QEMU_ASYNC_JOB_MIGRATION_OUT) < 0)
+ return -1;
+
if (qemuMonitorGetSpiceMigrationStatus(priv->mon,
&spice_migrated) < 0) {
qemuDomainObjExitMonitor(driver, vm);