diff options
| -rw-r--r-- | block/qcow2-bitmap.c | 22 | ||||
| -rw-r--r-- | block/qcow2.c | 5 | ||||
| -rw-r--r-- | block/qcow2.h | 1 |
3 files changed, 28 insertions, 0 deletions
diff --git a/block/qcow2-bitmap.c b/block/qcow2-bitmap.c index 81c49aecdb..f82478c02a 100644 --- a/block/qcow2-bitmap.c +++ b/block/qcow2-bitmap.c @@ -1366,3 +1366,25 @@ fail: bitmap_list_free(bm_list); } + +int qcow2_reopen_bitmaps_ro(BlockDriverState *bs, Error **errp) +{ + BdrvDirtyBitmap *bitmap; + Error *local_err = NULL; + + qcow2_store_persistent_dirty_bitmaps(bs, &local_err); + if (local_err != NULL) { + error_propagate(errp, local_err); + return -EINVAL; + } + + for (bitmap = bdrv_dirty_bitmap_next(bs, NULL); bitmap != NULL; + bitmap = bdrv_dirty_bitmap_next(bs, bitmap)) + { + if (bdrv_dirty_bitmap_get_persistance(bitmap)) { + bdrv_dirty_bitmap_set_readonly(bitmap, true); + } + } + + return 0; +} diff --git a/block/qcow2.c b/block/qcow2.c index 790b5b188f..1a31f1d360 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -1555,6 +1555,11 @@ static int qcow2_reopen_prepare(BDRVReopenState *state, /* We need to write out any unwritten data if we reopen read-only. */ if ((state->flags & BDRV_O_RDWR) == 0) { + ret = qcow2_reopen_bitmaps_ro(state->bs, errp); + if (ret < 0) { + goto fail; + } + ret = bdrv_flush(state->bs); if (ret < 0) { goto fail; diff --git a/block/qcow2.h b/block/qcow2.h index 308cefd0a6..1f80b5d8d4 100644 --- a/block/qcow2.h +++ b/block/qcow2.h @@ -648,5 +648,6 @@ int qcow2_check_bitmaps_refcounts(BlockDriverState *bs, BdrvCheckResult *res, bool qcow2_load_autoloading_dirty_bitmaps(BlockDriverState *bs, Error **errp); int qcow2_reopen_bitmaps_rw(BlockDriverState *bs, Error **errp); void qcow2_store_persistent_dirty_bitmaps(BlockDriverState *bs, Error **errp); +int qcow2_reopen_bitmaps_ro(BlockDriverState *bs, Error **errp); #endif |