[RLUG] LVM and RAID

[Damon Jacobsen]

My new computer has (2) 300G and (2) 200G hard drives. As I see it , using LVM and RAID a good setup might be to partitioln and combine as follows:

hda
   1 200G
   2 99G
   3 1G
hdb
   1 200G
   2 99G
   3 1G
hdc
  1 200G
hdd
   1 200G

Then combine hda2, and hdb2 into a raid1. Then combine hdx2 into a raid 5.

Further I would use these arrays in LVM so that the raid1 is used for kernel level things and the raid5 for user and storage locations. I am not sure where some of these should end up however. I am sure /home should go on the raid5 and /boot and /etc on the raid1, but the others like /usr and /var, I am unsure where I should put them.

hdx3 would be used for swap partitions.

Any suggestions to this plan would be helpful.

Damon


----- Start Original Message -----
From: Sebastian Smith <ssmith at cse.unr.edu>
To: Damon Jacobsen <CodeDragon at runbox.com>
Subject: Re: [RLUG] LVM and RAID

> Damon,
> 
> I use LVM on top of SW RAID all the time.  It a very easy setup.  Here are
> two "howto" docs I use all the time:
> 
> http://www.gentoo.org/doc/en/gentoo-x86-tipsntricks.xml (the software RAID
> section)
> 
> http://www.gentoo.org/doc/en/lvm2.xml
> 
> Gentoo configuration of RAID and LVM2 maps 1:1 with all other Linux
> distros.
> 
> I'm currently running LVM2 on top of SW RAID 5 on 2 machines -- soon to be
> 4.  Performance is excellent... for the cost.
> 
> - Sebastian
> 
> 
> On Fri, 18 Nov 2005, Damon Jacobsen wrote:
> 
> > Is there a way to combine LVM usage with software raid? I would like to get the easy drive remapping of LVM with the added benefit of increased throughput and mirroring of raid. My Nvidia 4 chipset allows a mock raid system, but research shows that using linux raid utils is faster.
> > 
> > Thanks
> > Damon
> > 
> > _______________________________________________
> > RLUG mailing list
> > RLUG at rlug.org
> > http://lists.rlug.org/mailman/listinfo/rlug
> > 
> 
> 

----- End Original Message -----