Commit <c9ec7088c7a3f4cd26bb471f1f243931fff6f4f9> introduced a support to fully allocate qcow2 images when <allocation> matches <capacity> but it doesn't work as expected. The issue is that info.size_arg is in KB but the info.allocation introduced by the mentioned commit is in B. This results in using "preallocation=falloc," in cases where "preallocation=metadata," should be used. Signed-off-by: Pavel Hrdina <phrdina(a)redhat.com&gt; --- src/storage/storage_util.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/storage/storage_util.c b/src/storage/storage_util.c index f7c09e3375..fcecedbc3a 100644 --- a/src/storage/storage_util.c +++ b/src/storage/storage_util.c @@ -1044,7 +1044,7 @@ virStorageBackendCreateQemuImgCmdFromVol(virStoragePoolObjPtr pool, .type = NULL, .inputType = NULL, .path = vol->target.path, - .allocation = vol->target.allocation, + .allocation = VIR_DIV_UP(vol->target.allocation, 1024), .encryption = !!vol->target.encryption, .preallocate = !!(flags & VIR_STORAGE_VOL_CREATE_PREALLOC_METADATA), .compat = vol->target.compat, -- 2.26.2