qemu-io: Relax 'alloc' now that block-status doesn't assert

Previously, the alloc command required that input parameters be
sector-aligned and clamped to 32 bits, because the underlying
bdrv_is_allocated used a 32-bit parameter and asserted aligned
inputs.  But now that we have fixed block status to report a
64-bit bytes value, and to properly round requests on behalf of
guests, we can pass any values, and can use qemu-io to add
coverage that our rounding is correct regardless of the guest
alignment constraints.

Update iotest 177 to intentionally probe block status at
unaligned boundaries as well as with a bytes value that does not
map to 32-bit sectors, which also required tweaking the image
prep to leave an unallocated portion to the image under test.

Signed-off-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

1 files changed, 0 insertions, 13 deletions

diff --git a/qemu-io-cmds.c b/qemu-io-cmds.c
index 3727fb4..de8e3de 100644
--- a/qemu-io-cmds.c
+++ b/qemu-io-cmds.c
@@ -1769,10 +1769,6 @@ static int alloc_f(BlockBackend *blk, int argc, char **argv)
     if (offset < 0) {
         print_cvtnum_err(offset, argv[1]);
         return 0;
-    } else if (!QEMU_IS_ALIGNED(offset, BDRV_SECTOR_SIZE)) {
-        printf("%" PRId64 " is not a sector-aligned value for 'offset'\n",
-               offset);
-        return 0;
     }
 
     if (argc == 3) {
@@ -1780,19 +1776,10 @@ static int alloc_f(BlockBackend *blk, int argc, char **argv)
         if (count < 0) {
             print_cvtnum_err(count, argv[2]);
             return 0;
-        } else if (count > INT_MAX * BDRV_SECTOR_SIZE) {
-            printf("length argument cannot exceed %llu, given %s\n",
-                   INT_MAX * BDRV_SECTOR_SIZE, argv[2]);
-            return 0;
         }
     } else {
         count = BDRV_SECTOR_SIZE;
     }
-    if (!QEMU_IS_ALIGNED(count, BDRV_SECTOR_SIZE)) {
-        printf("%" PRId64 " is not a sector-aligned value for 'count'\n",
-               count);
-        return 0;
-    }
 
     remaining = count;
     sum_alloc = 0;