[libvirt] [PATCH 12/13] qemu_driver: check whether iothread is used by controller

[Pavel Hrdina]

This follows the same check for disk, because we cannot remove iothread
if it's used by disk or by controller.  It could lead to crashing QEMU.

Signed-off-by: Pavel Hrdina <phrdina at redhat.com>
---
 src/qemu/qemu_driver.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 03fea2713d..1c3db4e13f 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -5747,6 +5747,17 @@ qemuDomainDelIOThreadCheck(virDomainDefPtr def,
         }
     }
 
+    for (i = 0; i < def->ncontrollers; i++) {
+        if (def->controllers[i]->iothread == iothread_id) {
+            const char *model = virDomainControllerModelSCSITypeToString(def->controllers[i]->model);
+            virReportError(VIR_ERR_INVALID_ARG,
+                           _("cannot remove IOThread '%u' since it "
+                             "is being used by controller '%s'"),
+                           iothread_id, model);
+            return -1;
+        }
+    }
+
     return 0;
 }
 
-- 
2.11.1