[CentOS] Booting Software RAID

[m.roth at 5-cent.us]

Paul Heinlein wrote:
> On Thu, 30 Jan 2014, Les Mikesell wrote:
>
>> I'm getting more and more inclined to make the whole systems
>> disposable/replaceable and using VMs for the smaller things instead
>> of micro-managing volume slices.
>
> +1
>
> Resource scarcity has changed dramatically over the past couple
> decades. HD space, for OS-installed files anyway, is about the least
> of anyone's worries these day.
>
> I only consider separate partitions for three directory trees:
>
> 1. /boot -- for compatibility with older BIOSes
> 2. /home -- for continuity across systems or upgrades
> 3. /srv  -- mostly human-maintained site data

Eight years ago, I wrote an article for SysAdmin, suggesting a straight
partition for /boot and root, and lvm for /home and /var, and /usr. These
days, I might say RAID 1 for /boot and /, and RAID or not for swap, and
another raid partition for everything else: home, other data
directories....

At work, we're going to not more than 500G for /, but I'm thinking a lot
less: I just rebuilt my own system at home, and gave / 150G, I think, and
I have /var there (though I'd put web stuff elsewhere than on /).

       mark