[PATCH v2 18/19] qemu: blockjob: Handle bitmaps after finish of normal block-commit

[Peter Krempa]

Merge the bitmaps into base of the block commit after the job finishes.

Signed-off-by: Peter Krempa <pkrempa at redhat.com>
---
 src/qemu/qemu_blockjob.c | 53 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 53 insertions(+)

diff --git a/src/qemu/qemu_blockjob.c b/src/qemu/qemu_blockjob.c
index 63f1cc79c3..ed7959175a 100644
--- a/src/qemu/qemu_blockjob.c
+++ b/src/qemu/qemu_blockjob.c
@@ -1049,6 +1049,56 @@ qemuBlockJobDeleteImages(virQEMUDriverPtr driver,
     }
 }

+
+/**
+ * qemuBlockJobProcessEventCompletedCommitBitmaps:
+ *
+ * Handles the bitmap changes after commit. This function shall return -1 on
+ * monitor failures.
+ */
+static int
+qemuBlockJobProcessEventCompletedCommitBitmaps(virDomainObjPtr vm,
+                                               qemuBlockJobDataPtr job,
+                                               qemuDomainAsyncJob asyncJob)
+{
+    qemuDomainObjPrivatePtr priv = vm->privateData;
+    g_autoptr(virHashTable) blockNamedNodeData = NULL;
+    g_autoptr(virJSONValue) actions = NULL;
+
+    if (!virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_BLOCKDEV_REOPEN))
+        return 0;
+
+    if (!(blockNamedNodeData = qemuBlockGetNamedNodeData(vm, asyncJob)))
+        return -1;
+
+    if (qemuBlockBitmapsHandleCommitFinish(job->data.commit.top,
+                                           job->data.commit.base,
+                                           blockNamedNodeData,
+                                           &actions,
+                                           job->data.commit.disabledBitmapsBase) < 0)
+        return 0;
+
+    if (!actions)
+        return 0;
+
+    if (qemuBlockReopenReadWrite(vm, job->data.commit.base, asyncJob) < 0)
+        return -1;
+
+    if (qemuDomainObjEnterMonitorAsync(priv->driver, vm, asyncJob) < 0)
+        return -1;
+
+    qemuMonitorTransaction(priv->mon, &actions);
+
+    if (qemuDomainObjExitMonitor(priv->driver, vm) < 0)
+        return -1;
+
+    if (qemuBlockReopenReadOnly(vm, job->data.commit.base, asyncJob) < 0)
+        return -1;
+
+    return 0;
+}
+
+
 /**
  * qemuBlockJobProcessEventCompletedCommit:
  * @driver: qemu driver object
@@ -1106,6 +1156,9 @@ qemuBlockJobProcessEventCompletedCommit(virQEMUDriverPtr driver,
     if (!n)
         return;

+    if (qemuBlockJobProcessEventCompletedCommitBitmaps(vm, job, asyncJob) < 0)
+        return;
+
     /* revert access to images */
     qemuDomainStorageSourceAccessAllow(driver, vm, job->data.commit.base,
                                        true, false, false);
-- 
2.24.1