Re: [mdadm PATCH] mdadm: make create clustered raid10 possible

[Guoqing Jiang <gqjiang@suse.com>]

On 10/30/2017 01:57 PM, Shaohua Li wrote:
> On Tue, Oct 24, 2017 at 03:31:24PM +0800, Guoqing Jiang wrote:
>> This change to make we can create a clustered
>> raid10 array as well.
>>
>> Signed-off-by: Guoqing Jiang <gqjiang@suse.com>
>> ---
>>   mdadm.c | 5 +++--
>>   1 file changed, 3 insertions(+), 2 deletions(-)
>>
>> diff --git a/mdadm.c b/mdadm.c
>> index 7cdcdba7c652..60d80e0103f4 100644
>> --- a/mdadm.c
>> +++ b/mdadm.c
>> @@ -1542,8 +1542,9 @@ int main(int argc, char *argv[])
>>   				break;
>>   			}
>>   
>> -			if (s.level != 1) {
>> -				pr_err("--bitmap=clustered is currently supported with RAID mirror only\n");
>> +			if (s.level != 1 && s.level != 10) {
>> +				pr_err("--bitmap=clustered is currently "
>> +				       "supported with raid1/10 only\n");
>>   				rv = 1;
>>   				break;
> Since kernel only supports near layout for raid10 cluster, probably check the
> layout in mdadm too?

The changes in raid10_run has ensured only near layout is possible for 
clustered raid10.
Anyway, I will add the check either.

Thanks,
Guoqing