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qemu: Don't update count of vCPUs if hot-unplug has failed

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After live change of cpu counts, the number of processor threads is
verified. This patch makes use of this approach to check if qemu ignored
the request for cpu hot-unplug and report an appropriate message.
This commit is contained in:
Peter Krempa 2013-01-15 16:09:43 +01:00
parent dc350eabb3
commit 761fc48136
1 changed files with 9 additions and 0 deletions
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9
src/qemu/qemu_driver.c
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@ -3697,6 +3697,15 @@ static int qemuDomainHotplugVcpus(virQEMUDriverPtr driver,
goto cleanup; goto cleanup;
} }
/* check if hotplug has failed */
if (vcpus < oldvcpus && ncpupids == oldvcpus) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("qemu didn't unplug the vCPUs properly"));
vcpus = oldvcpus;
ret = -1;
goto cleanup;
}
if (ncpupids != vcpus) { if (ncpupids != vcpus) {
virReportError(VIR_ERR_INTERNAL_ERROR, virReportError(VIR_ERR_INTERNAL_ERROR,
_("got wrong number of vCPU pids from QEMU monitor. " _("got wrong number of vCPU pids from QEMU monitor. "