The qcow block driver format is no longer maintained and likely contains
serious data corruptors. Urge users to stay away for it, and advertise
the new and improved replacement.
Signed-off-by: Avi Kivity <avi@xxxxxxxxxx>
---
block/qcow.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/block/qcow.c b/block/qcow.c
index 55a68a6..2aef6a6 100644
--- a/block/qcow.c
+++ b/block/qcow.c
@@ -101,6 +101,11 @@ static int qcow_open(BlockDriverState *bs, const char *filename, int flags)
return ret;
if (bdrv_pread(s->hd, 0, &header, sizeof(header)) != sizeof(header))
goto fail;
+
+ fprintf(stderr,
+ "WARNING: the qcow file format is no longer supported.\n"
+ " Please convert your images to qcow2.\n");
+
be32_to_cpus(&header.magic);
be32_to_cpus(&header.version);
be64_to_cpus(&header.backing_file_offset);
--
1.6.0.6
--
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