qed: mark image clean after repair succeeds

The dirty bit is cleared after image repair succeeds in qed_open().
Move this into qed_check() so that all callers benefit from this
behavior when fix=true.

This is necessary so qemu-img check can call .bdrv_check() and mark the
image clean.

Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

diff --git a/block/qed-check.c b/block/qed-check.c
index 5edf60775b83d914963dc294def50e299965eb24..b473dcd61f63f91d43258c7d80ff70d36b1d0fb7 100644 (file)
--- a/block/qed-check.c
+++ b/block/qed-check.c
@@ -194,6 +194,28 @@ static void qed_check_for_leaks(QEDCheck *check)
     }
 }
 
+/**
+ * Mark an image clean once it passes check or has been repaired
+ */
+static void qed_check_mark_clean(BDRVQEDState *s, BdrvCheckResult *result)
+{
+    /* Skip if there were unfixable corruptions or I/O errors */
+    if (result->corruptions > 0 || result->check_errors > 0) {
+        return;
+    }
+
+    /* Skip if image is already marked clean */
+    if (!(s->header.features & QED_F_NEED_CHECK)) {
+        return;
+    }
+
+    /* Ensure fixes reach storage before clearing check bit */
+    bdrv_flush(s->bs);
+
+    s->header.features &= ~QED_F_NEED_CHECK;
+    qed_write_header_sync(s);
+}
+
 int qed_check(BDRVQEDState *s, BdrvCheckResult *result, bool fix)
 {
     QEDCheck check = {
@@ -215,6 +237,10 @@ int qed_check(BDRVQEDState *s, BdrvCheckResult *result, bool fix)
     if (ret == 0) {
         /* Only check for leaks if entire image was scanned successfully */
         qed_check_for_leaks(&check);
+
+        if (fix) {
+            qed_check_mark_clean(s, result);
+        }
     }
 
     g_free(check.used_clusters);

diff --git a/block/qed.c b/block/qed.c
index 5f3eefa3af00cff76c16748778e8c20a480b552e..226545d8e703bc81bffb198695af42013c854aca 100644 (file)
--- a/block/qed.c
+++ b/block/qed.c
@@ -89,7 +89,7 @@ static void qed_header_cpu_to_le(const QEDHeader *cpu, QEDHeader *le)
     le->backing_filename_size = cpu_to_le32(cpu->backing_filename_size);
 }
 
-static int qed_write_header_sync(BDRVQEDState *s)
+int qed_write_header_sync(BDRVQEDState *s)
 {
     QEDHeader le;
     int ret;
@@ -491,13 +491,6 @@ static int bdrv_qed_open(BlockDriverState *bs, int flags)
             if (ret) {
                 goto out;
             }
-            if (!result.corruptions && !result.check_errors) {
-                /* Ensure fixes reach storage before clearing check bit */
-                bdrv_flush(s->bs);
-
-                s->header.features &= ~QED_F_NEED_CHECK;
-                qed_write_header_sync(s);
-            }
         }
     }
 

diff --git a/block/qed.h b/block/qed.h
index c716772ad70fbf94323590822c9ef18a0ec34141..a063bf70affdd319f92f4ef72bbd2d6a79874cb6 100644 (file)
--- a/block/qed.h
+++ b/block/qed.h
@@ -210,6 +210,11 @@ typedef struct {
 void *gencb_alloc(size_t len, BlockDriverCompletionFunc *cb, void *opaque);
 void gencb_complete(void *opaque, int ret);
 
+/**
+ * Header functions
+ */
+int qed_write_header_sync(BDRVQEDState *s);
+
 /**
  * L2 cache functions
  */