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qcow2: move qcow2_store_persistent_dirty_bitmaps() before cache flushing 

After calling qcow2_inactivate(), all qcow2 caches must be flushed, but this
may not happen, because the last call qcow2_store_persistent_dirty_bitmaps()
can lead to marking l2/refcont cache as dirty.

Let's move qcow2_store_persistent_dirty_bitmaps() before the caсhe flushing
to fix it.

Cc: qemu-stable@nongnu.org
Signed-off-by: Pavel Butsykin <pbutsykin@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Pavel Butsykin 2017-09-04 13:18:00 +03:00 committed by Kevin Wolf
parent 1e13e2015b
commit 83a8c775a8
1 changed files with 8 additions and 8 deletions
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16
block/qcow2.c
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@ -2036,6 +2036,14 @@ static int qcow2_inactivate(BlockDriverState *bs)
int ret, result = 0;
Error *local_err = NULL;
qcow2_store_persistent_dirty_bitmaps(bs, &local_err);
if (local_err != NULL) {
result = -EINVAL;
error_report_err(local_err);
error_report("Persistent bitmaps are lost for node '%s'",
bdrv_get_device_or_node_name(bs));
}
ret = qcow2_cache_flush(bs, s->l2_table_cache);
if (ret) {
result = ret;
@ -2050,14 +2058,6 @@ static int qcow2_inactivate(BlockDriverState *bs)
strerror(-ret));
}
qcow2_store_persistent_dirty_bitmaps(bs, &local_err);
if (local_err != NULL) {
result = -EINVAL;
error_report_err(local_err);
error_report("Persistent bitmaps are lost for node '%s'",
bdrv_get_device_or_node_name(bs));
}
if (result == 0) {
qcow2_mark_clean(bs);
}