Test case for mkfs to handle if total device size overflows 16EiB. The
device images are created inside temporary btrfs so this works on any
underlying filesystem (unlike NFS or tmpfs).
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
[ split test from original patch and update to work on any filesystem ]
Signed-off-by: David Sterba <dsterba@suse.com>
Jeff Mahoney