# Re: \[PATCH 0/2\] Check node nums for cluster raid

- From: Jes Sorensen \<hidden\>
- Date: 2016-05-04 15:12:20 
- List: linux-raid
- Page: https://ratatoskr.run/linux-raid/2016/05/6632011
- Thread: https://ratatoskr.run/linux-raid/2016/05/6632011/t.md

```text
Guoqing Jiang [ref] writes:
> For cluster raid, we do need at least two nodes for it,
> the two patches add the checks before create and change
> bitmap.
>
> Thanks,
> Guoqing    
>
> Guoqing Jiang (2):
>   Create: check the node nums when create clustered raid
>   super1: don't update node nums if it is not more than 1
>
>  Create.c | 7 ++++++-
>  super1.c | 5 +++++
>  2 files changed, 11 insertions(+), 1 deletion(-)

Hi Guoqing,

I am a little confused on this one - albeit I haven't looked at it in
detail. Why should it not be possible to start a cluster with one node?
In theory you should be able to do that, and then add nodes later?

Cheers,
Jes
```