[CentOS] Raid1 --> Raid5

[John R Pierce]

Mariusz wrote:
> On Fri, Dec 19, 2008 at 02:00:43PM +0000, Karanbir Singh wrote:
>   
>> Mariusz wrote:
>>     
>>> ok, thanks for reply, but logical disk(s) will be the same? after migration?
>>>       
>> Did you ask your vendor / manufacturer of the raid layer ? What did they 
>> say ?
>>
>> - KB
>>     
> no, i haven't asked yet, but i'm going to do it. Maybe i should use dd command (create image all logical disk to another disk) and add new 3rd disk, create raid 5 volume and after restore system from dd image?
>   


dd is a sector by sector image of a disk, not very useful for moving 
file systems.    if its e3fs, I'd use dump -> spare storage, rebuild the 
raid, then restore -> new raid.   or tar or cpio or whatever your 
favorite backup method is that preserves links and stuff.