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Thanks to all for the responses. I had done soft Raid, I had done LVM a little, but never LVM on top of softRaid. <BR>
<BR>
I screwed up my courage to the sticking point last night, exported the Virtualbox appliances, and reinstalled 6.2. <BR>
<BR>
Of course, the first CD boot, to install, rattled for a while, then after a couple minutes it completely hung with the Centos logo on the screen. Great.<BR>
The 2nd time booting, using the text install, I didn't have the disk setup options. Super. <BR>
The third time I booted to the live CD, then picked "install to hard disk", and got the disk setup I've grown to know and.... be ok with. <BR>
<BR>
I averaged out the responses, put /boot on /dev/md0, and the only PV on /dev/md1, and split out root, home and u under that. All appears to be well. <BR>
<BR>
To answer your question, /u for me is typically my products, databases... all my company's stuff, which isn't mine personally. I attempt to segregate that from linux stuff in the standard directories. I attempt to avoid anything in /usr which isn't a part of Linux. Excepting /usr/local. So my priority in making backups is always /u first, then /home, then /usr/local, then / minus those three. <BR>
<BR>
It's my hope that if I were to blow away the linux boot or / data, by having a separate filesystem I'm more likely to be able to pop the drive into a newly built replacement chassis and mount /home and /u. The junk in /usr/local is stuff I COULD reload if I had to. The stuff in /home and /u exists nowhere else on the planet but my backups. <BR>
<BR>
Neal <BR>
<BR>
On Tue, 2012-03-20 at 05:21 -0400, Leam Hall wrote:
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<PRE>
On 03/19/2012 10:35 PM, Neal Rhodes wrote:
> I'm getting ready for the 3rd time installing Centos 6.2 on new server
> for home. We usually figure we get to install at least twice on a new
> OS and hardware.
>
> This time the re-install is to get the drive partitioning and soft RAID
> right. I didn't have the 2nd drive for the 2nd install.
>
> Normally our prior Fedora servers have been
>
> /dev/md1 on / type ext3 (rw)
> /dev/md0 on /boot type ext3 (rw)
> /dev/md2 on /u type ext3 (rw)
>
>
> This time around I was thinking on using LVM, I guess to just get more
> experience with LVM. However, since you wouldn't want to risk
> resizing /boot or root filesystem, I see no point in them being in
> LVM.
>
> Primary drive is 1.5TB, of which 220GB is occupied by Windows7 boot,
> which I'd prefer to not disturb.
> 2nd drive is 1TB.
>
> So, I'm thinking of a layout like this:
>
> /dev/md0 on /boot type ext3 (rw) (whatever boot takes)
> /dev/md1 on / type ext3 (rw) (about 50GB)
> /dev/md2 on VolumeGroup00 (about 1TB)
> And logical volumes for /home and /u, which can be
> resized as needed between /home and /u
> /dev/sda? on /u2 (remaining 300GB,
> not Raid 1, just on the one bigger drive)
>
>
> Is that going to work? Other thoughts?
>
> Neal Rhodes
> MNOP Ltd
Morning Neil!
If you're looking to learn, then life becomes a lot more fun! Some
things to consider might be adding a swap space partition and separating
/var, /usr, and /home from root (which you have done partly). Swap is a
separate partition at the BIOS level though you can add swap volumes
later under LVM. However, I prefer a swap partition because if the
machine needs to swap then adding overhead for LVM seems against the grain.
With /home separate you can just tar it up for archive, move it off the
machine, and then restore it back once you rebuild. I've been doing this
for years and still have files from 10 years ago even though a few of my
machines have crashed.
Moving /var and /usr off root helps because they tend to grow a lot.
That lets you move things around easier though it's a bit trickier than
/home.
What are you using /u for?
Leam
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