Re: [libvirt] [PATCH] storage: Ensure 'qemu-img resize' size arg is a 512 multiple

qemu-img resize will fail with "The new size must be a multiple of 512" if libvirt doesn't round it first. This fixes rhbz#951495 Signed-off-by: Christophe Fergeau <cfergeau(a)redhat.com&gt; --- src/storage/storage_backend_fs.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/src/storage/storage_backend_fs.c b/src/storage/storage_backend_fs.c index 9b83e57..99973b0 100644 --- a/src/storage/storage_backend_fs.c +++ b/src/storage/storage_backend_fs.c @@ -1219,6 +1219,10 @@ virStorageBackendFilesystemResizeQemuImg(const char *path, return -1; } + /* Round capacity up to the closest 512 multiple as qemu-img errors out + * on sizes which are not a multiple of 512 */ + capacity = (capacity + 511) / 512 * 512;

+ cmd = virCommandNew(img_tool); virCommandAddArgList(cmd, "resize", path, NULL); virCommandAddArgFormat(cmd, "%llu", capacity);