[CentOS] RAID?

Am 25.06.2012 21:51, schrieb John R Pierce:
> On 06/25/12 12:14 PM, Luke S. Crawford wrote:
>> Also, nobody uses it.  If you hit a problem, you are completely on your
>> own.   I thought it would be more simple to have only one abstraction
>> layer;  Nope.     Use md and lvm on top of the md.
> 
> they really should be better integrated, like the way LVM and JFS are 
> integrated on AIX.
> 
>      # chfs -a size=+2G /var
> 
> adds 2GB to /var, online, automatically.  grows the logical volume and 
> resizes the file system, all at once.

Don't know where software RAID comes into play on AIX, but what is the
difference of that command above to this one on CentOS 6?

      # lvresize -L+2G -r VG_sys/LV_var

Alexander