Re: Multiple RAID or encrypted partitions
On Sat, 2006-09-09 at 10:27 +1000, Paul Dwerryhouse wrote:
> On Fri, Sep 08, 2006 at 10:37:14AM -0500, Owen Heisler wrote:
> > So, is it not possible to have multiple RAID5 partitions, or is this a
> > temporary limitation of debian-installer?
>
> I might have misinterpreted your question earlier as "creating multiple
> partitions within a single RAID5 array", which is why I suggested LVM.
>
> I don't see any reason why it shouldn't be possible to create multiple
> partitions /of/ RAID5, that might look something like this, for example
> (ignoring the grub/lilo boot problem for a moment):
>
> sda:
> sda1
> sda2
> sda3
>
> sdb:
> sdb1
> sdb2
> sdb3
>
> sdc:
> sdc1
> sdc2
> sdc3
>
> RAID5 (1): sda1 sdb1 sdc1
> RAID5 (2): sda2 sdb2 sdc2
> RAID5 (3): sda3 sdb3 sdc3
Yes, I had considered doing that. And I'm sorry to keep harping on the
same question, but I thought that RAID5 was capable of having multiple
partitions in one array; is it?
> I've done similar with RAID1 in the past. It seems very messy to me now,
> and I much prefer to just have the one partition and put LVM over the
> whole lot.
Because I have no experience with software RAID, encryption, or LVM, I
am a bit nervous about getting very many "layers" (/ on a logical volume
on an encrypted partition on RAID5 on three+ physical hard drives).
Redundancy doesn't do me any good if I can't figure out how to see my
data via a LiveCD.
> > And crypt?
>
> Don't know an awful lot about crypt, sorry. But from what I remember, it
> integrates with LVM very well.
Thanks again for your help. Now I need to throw all this into Qemu and
try it out...
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