Re: how to use 5T RAID disk with NetBSD

On Nov,Tuesday 11 2008, at 1:22 AM, [email protected] wrote:

> Hi,
>
> Can you explain this in details
>> You can use wedges which aren't that well documented.  
>> Alternatively, you
>> can always cheat and just format the raw partition (d on x86), e.g.
>> /dev/rsd1d. This will bypass disklabel entirely.
>>
> How can I cheat the disklabel.
>
> The disklabel gives wrong total sectors:
>
> ***********
> quercus# disklabel sd2
> # /dev/rsd2d:
> type: SCSI
> disk: A16U-G2421
> label: fictitious
> flags:
> bytes/sector: 512
> sectors/track: 255
> tracks/cylinder: 255
> sectors/cylinder: 65025
> cylinders: 168126
> total sectors: 2342498304
> rpm: 5411
> interleave: 1
> trackskew: 0
> cylinderskew: 0
> headswitch: 0           # microseconds
> track-to-track seek: 0  # microseconds
> drivedata: 0
> *********
>
> It should be 65025*168126=10932393150 (which is a correct number)  
> instead
> of 2342498304. How can I fix this ? I've tried to change the total  
> sectors
> to the correct one but disklabel gives me the error message "invalid  
> total
> sectors". Any help in fixing this would be appreciated.


You can't use disklabel for that because it uses only 32bit value for  
that.
You can try to use dk or whole device(device with d suffix). Or you  
can give
haad-dm branch shot and use LVM to create multiple partitions on your  
RAID
ARRAY.

Regards

Adam.