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-rw-r--r--block/raw-format.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/block/raw-format.c b/block/raw-format.c
index a1622c6..721c9a0 100644
--- a/block/raw-format.c
+++ b/block/raw-format.c
@@ -352,10 +352,17 @@ static void raw_refresh_limits(BlockDriverState *bs, Error **errp)
}
}
-static int raw_truncate(BlockDriverState *bs, int64_t offset, Error **errp)
+static int raw_truncate(BlockDriverState *bs, int64_t offset,
+ PreallocMode prealloc, Error **errp)
{
BDRVRawState *s = bs->opaque;
+ if (prealloc != PREALLOC_MODE_OFF) {
+ error_setg(errp, "Unsupported preallocation mode '%s'",
+ PreallocMode_lookup[prealloc]);
+ return -ENOTSUP;
+ }
+
if (s->has_size) {
error_setg(errp, "Cannot resize fixed-size raw disks");
return -ENOTSUP;