[linux-lvm] Help: LVM on top of SW RAID0+1

[Steven Lembark]

-- Jon Bendtsen <jon+lvm at silicide.dk>

> "Ian E. Morgan" wrote:
>>
>> Current config:
>>
>> md1: raid0 of hda3, hdb3
>> md2: raid0 of hdc3, hdd3
>> md3: raid1 of md1, md2
>
> hmm. I tried various combinations of raid0 and raid1 ontop
> of each other. One combination had a REALLY REALLY severe
> performance penalty.

Why would you want to use raid0 with LVM? You can combine
the mirrors into a VG and distribute the space out using
LVM in the first place. You also have the option of using
striping for performance if works out with the software mirrors.



--
Steven Lembark                               2930 W. Palmer
Workhorse Computing                       Chicago, IL 60647
                                            +1 888 359 3508