From: Peter Krempa <pkrempa@redhat.com>
Date: Fri, 20 Dec 2019 10:00:57 +0000 (+0100)
Subject: qemu: backup: Move deletion of backup images to job termination
X-Git-Tag: v6.0.0-rc1~75
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=40485059ab9e4b0d062af86c110ae75f7bb39679;p=thirdparty%2Flibvirt.git

qemu: backup: Move deletion of backup images to job termination

While qemu is running both locations are identical in semantics, but the
move will allow us to fix the scenario when the VM is destroyed or
crashes where we'd leak the images.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
---

diff --git a/src/qemu/qemu_backup.c b/src/qemu/qemu_backup.c
index 24a53fd85f..c5484c7b93 100644
--- a/src/qemu/qemu_backup.c
+++ b/src/qemu/qemu_backup.c
@@ -614,6 +614,7 @@ qemuBackupJobTerminate(virDomainObjPtr vm,
 
 {
     qemuDomainObjPrivatePtr priv = vm->privateData;
+    size_t i;
 
     qemuDomainJobInfoUpdateTime(priv->job.current);
 
@@ -630,6 +631,29 @@ qemuBackupJobTerminate(virDomainObjPtr vm,
 
     qemuDomainEventEmitJobCompleted(priv->driver, vm);
 
+    if (!(priv->job.apiFlags & VIR_DOMAIN_BACKUP_BEGIN_REUSE_EXTERNAL) &&
+        (priv->backup->type == VIR_DOMAIN_BACKUP_TYPE_PULL ||
+         (priv->backup->type == VIR_DOMAIN_BACKUP_TYPE_PUSH &&
+          jobstatus != QEMU_DOMAIN_JOB_STATUS_COMPLETED))) {
+
+        g_autoptr(virQEMUDriverConfig) cfg = virQEMUDriverGetConfig(priv->driver);
+
+        for (i = 0; i < priv->backup->ndisks; i++) {
+            virDomainBackupDiskDefPtr backupdisk = priv->backup->disks + i;
+            uid_t uid;
+            gid_t gid;
+
+            if (!backupdisk->store ||
+                backupdisk->store->type != VIR_STORAGE_TYPE_FILE)
+                continue;
+
+            qemuDomainGetImageIds(cfg, vm, backupdisk->store, NULL, &uid, &gid);
+            if (virFileRemove(backupdisk->store->path, uid, gid) < 0)
+                VIR_WARN("failed to remove scratch file '%s'",
+                         backupdisk->store->path);
+        }
+    }
+
     virDomainBackupDefFree(priv->backup);
     priv->backup = NULL;
     qemuDomainObjEndAsyncJob(priv->driver, vm);
diff --git a/src/qemu/qemu_blockjob.c b/src/qemu/qemu_blockjob.c
index 498e2a716f..131b53d88d 100644
--- a/src/qemu/qemu_blockjob.c
+++ b/src/qemu/qemu_blockjob.c
@@ -1335,9 +1335,6 @@ qemuBlockJobProcessEventConcludedBackup(virQEMUDriverPtr driver,
                                         unsigned long long progressCurrent,
                                         unsigned long long progressTotal)
 {
-    g_autoptr(virQEMUDriverConfig) cfg = virQEMUDriverGetConfig(driver);
-    uid_t uid;
-    gid_t gid;
     g_autoptr(qemuBlockStorageSourceAttachData) backend = NULL;
     g_autoptr(virJSONValue) actions = NULL;
 
@@ -1369,18 +1366,8 @@ qemuBlockJobProcessEventConcludedBackup(virQEMUDriverPtr driver,
     if (qemuDomainObjExitMonitor(driver, vm) < 0)
         return;
 
-    if (job->data.backup.store) {
+    if (job->data.backup.store)
         qemuDomainStorageSourceAccessRevoke(driver, vm, job->data.backup.store);
-
-        if (job->data.backup.deleteStore &&
-            job->data.backup.store->type == VIR_STORAGE_TYPE_FILE) {
-            qemuDomainGetImageIds(cfg, vm, job->data.backup.store, NULL, &uid, &gid);
-
-            if (virFileRemove(job->data.backup.store->path, uid, gid) < 0)
-                VIR_WARN("failed to remove scratch file '%s'",
-                         job->data.backup.store->path);
-        }
-    }
 }