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-rw-r--r--block/stream.c9
-rw-r--r--blockdev.c8
2 files changed, 6 insertions, 11 deletions
diff --git a/block/stream.c b/block/stream.c
index 6e281c71ac..6a525a5edf 100644
--- a/block/stream.c
+++ b/block/stream.c
@@ -65,6 +65,7 @@ static int stream_prepare(Job *job)
BlockDriverState *bs = blk_bs(bjob->blk);
BlockDriverState *unfiltered_bs = bdrv_skip_filters(bs);
BlockDriverState *base = bdrv_filter_or_cow_bs(s->above_base);
+ BlockDriverState *unfiltered_base = bdrv_skip_filters(base);
Error *local_err = NULL;
int ret = 0;
@@ -73,10 +74,10 @@ static int stream_prepare(Job *job)
if (bdrv_cow_child(unfiltered_bs)) {
const char *base_id = NULL, *base_fmt = NULL;
- if (base) {
- base_id = s->backing_file_str;
- if (base->drv) {
- base_fmt = base->drv->format_name;
+ if (unfiltered_base) {
+ base_id = s->backing_file_str ?: unfiltered_base->filename;
+ if (unfiltered_base->drv) {
+ base_fmt = unfiltered_base->drv->format_name;
}
}
bdrv_set_backing_hd(unfiltered_bs, base, &local_err);
diff --git a/blockdev.c b/blockdev.c
index e496356e10..8c03de582c 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -2511,7 +2511,6 @@ void qmp_block_stream(bool has_job_id, const char *job_id, const char *device,
BlockDriverState *base_bs = NULL;
AioContext *aio_context;
Error *local_err = NULL;
- const char *base_name = NULL;
int job_flags = JOB_DEFAULT;
if (!has_on_error) {
@@ -2539,7 +2538,6 @@ void qmp_block_stream(bool has_job_id, const char *job_id, const char *device,
goto out;
}
assert(bdrv_get_aio_context(base_bs) == aio_context);
- base_name = base;
}
if (has_base_node) {
@@ -2554,7 +2552,6 @@ void qmp_block_stream(bool has_job_id, const char *job_id, const char *device,
}
assert(bdrv_get_aio_context(base_bs) == aio_context);
bdrv_refresh_filename(base_bs);
- base_name = base_bs->filename;
}
/* Check for op blockers in the whole chain between bs and base */
@@ -2574,9 +2571,6 @@ void qmp_block_stream(bool has_job_id, const char *job_id, const char *device,
goto out;
}
- /* backing_file string overrides base bs filename */
- base_name = has_backing_file ? backing_file : base_name;
-
if (has_auto_finalize && !auto_finalize) {
job_flags |= JOB_MANUAL_FINALIZE;
}
@@ -2584,7 +2578,7 @@ void qmp_block_stream(bool has_job_id, const char *job_id, const char *device,
job_flags |= JOB_MANUAL_DISMISS;
}
- stream_start(has_job_id ? job_id : NULL, bs, base_bs, base_name,
+ stream_start(has_job_id ? job_id : NULL, bs, base_bs, backing_file,
job_flags, has_speed ? speed : 0, on_error,
filter_node_name, &local_err);
if (local_err) {