[CentOS] Raid1 --> Raid5

Fri Dec 19 17:23:48 UTC 2008
John R Pierce <pierce at hogranch.com>

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.