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b518e9e9ef
The main consumer of cluster-size is block-copy. Let's calculate it here instead of passing through backup-top. We are going to publish copy-before-write filter soon, so it will be created through options. But we don't want for now to make explicit option for cluster-size, let's continue to calculate it automatically. So, now is the time to get rid of cluster_size argument for bdrv_cbw_append(). Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Message-Id: <20210824083856.17408-10-vsementsov@virtuozzo.com> [hreitz: Add qemu/error-report.h include to block/block-copy.c] Signed-off-by: Hanna Reitz <hreitz@redhat.com>