Newbie question on adding RAID capacity

[Philip Prindeville]

Mike McGrath wrote:

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>>-----Original Message-----
>>From: fedora-list-bounces at redhat.com 
>>[mailto:fedora-list-bounces at redhat.com] On Behalf Of Philip 
>>Prindeville
>>Sent: Thursday, July 28, 2005 4:06 PM
>>To: For users of Fedora Core releases
>>Subject: Newbie question on adding RAID capacity
>>
>>I initially did a fairly stock install onto a K8M800 type 
>>motherboard (AMD 64 XP 2800+ processor, 8237R/K8M800 type 
>>chipset) with the SATA raid capability.  I'll soon be adding 
>>another drive as soon as I can receive it (it's one of those 
>>Maxtor Diamondmax drives that have been going like hotcakes).
>>
>>My question is...  Do I need to do anything in particular to "widen"
>>the raid stripe and add the drive to the volume?  Will the 
>>filesystem be "re-interleaved" across two drives?  Or do I 
>>have to do something painful like save to DVD, add the new 
>>drive, create new filesystems, and then restore from DVD?
>>
>>Thanks,
>>
>>-Philip
>>
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>I'm not 100% sure about what raid you have setup, I would assume
>software raid?  Either way its not going to be pretty, perhaps you
>should look into LVM?  It would have made this sort of thing very easy.
>Either way if what you have is important to you, back it up before you
>do anything.
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>	-Mike
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It's the hardware RAID that comes with the 8237's capabilities... (and the
configuration seems to be at least partly in BIOS setup).

I'm using LVM, since it's part of the standard setup.  I wasn't sure, 
though,
if LVM waits until the first physical volume is filled up before 
creating new
files on the second one, or if it automatically interlaces, or what...

-Philip