# Re: clearing blocks wrongfully marked as bad if --update=no-bbl can't be used?

- From: Phil Turmel \<hidden\>
- Date: 2016-11-04 18:22:48 
- List: linux-raid
- Page: https://ratatoskr.run/linux-raid/2016/11/6633330
- Thread: https://ratatoskr.run/linux-raid/2016/10/6633249/t.md

```text
On 11/04/2016 02:18 PM, Marc MERLIN wrote:

> Right, so I thought I was home free, but not even close. My array is
> back up, the badblock feature is disabled, array reports clean, but I
> cannot access data past 8.8TB, it just fails.
> 
> myth:~# dd if=/dev/md5 of=/dev/null bs=1GB skip=8797
> dd: reading `/dev/md5': Invalid argument
> 0+0 records in
> 0+0 records out
> 0 bytes (0 B) copied, 0.000403171 s, 0.0 kB/s
> myth:~# dd if=/dev/md5 of=/dev/null bs=1GB skip=8796
> dd: reading `/dev/md5': Invalid argument
> 1+0 records in
> 1+0 records out
> 1000000000 bytes (1.0 GB) copied, 10.5817 s, 94.5 MB/s

That has nothing to do with MD.  You are using a power of ten suffix in
your block size, so you are running into non-aligned sector locations.

```