diff options
Diffstat (limited to 'block/backup-top.c')
| -rw-r--r-- | block/backup-top.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/block/backup-top.c b/block/backup-top.c index 1bfb360bd3..3b50c06e2c 100644 --- a/block/backup-top.c +++ b/block/backup-top.c @@ -38,6 +38,7 @@ typedef struct BDRVBackupTopState { BlockCopyState *bcs; BdrvChild *target; bool active; + int64_t cluster_size; } BDRVBackupTopState; static coroutine_fn int backup_top_co_preadv( @@ -57,8 +58,8 @@ static coroutine_fn int backup_top_cbw(BlockDriverState *bs, uint64_t offset, return 0; } - off = QEMU_ALIGN_DOWN(offset, s->bcs->cluster_size); - end = QEMU_ALIGN_UP(offset + bytes, s->bcs->cluster_size); + off = QEMU_ALIGN_DOWN(offset, s->cluster_size); + end = QEMU_ALIGN_UP(offset + bytes, s->cluster_size); return block_copy(s->bcs, off, end - off, NULL); } @@ -238,6 +239,7 @@ BlockDriverState *bdrv_backup_top_append(BlockDriverState *source, goto fail; } + state->cluster_size = cluster_size; state->bcs = block_copy_state_new(top->backing, state->target, cluster_size, write_flags, &local_err); if (local_err) { |