[CentOS] raid 1 question

Thu Mar 7 23:52:30 UTC 2013
Les Mikesell <lesmikesell at gmail.com>

On Thu, Mar 7, 2013 at 5:40 PM, John R Pierce <pierce at hogranch.com> wrote:
> On 3/7/2013 3:35 PM, Gerry Reno wrote:
>> Dave,  I've been using software raid with every type of RedHat distro RH/CentOS/Fedora for over 10 years without any
>> serious difficulties.  I don't quite understand the logic in all these negative statements about software raid on that
>> wiki page.  The worst I get into is I have to boot from a bootdisk if the MBR gets corrupted for any reason.  No big
>> deal.  Just rerun grub.
>
> have you been putting /boot on a mdraid?  that's what the article is
> recommending against.

I've put /boot on md  raid1 on a lot of machines (always drives small
enough to be MBR based) and never had any problem with the partition
looking enough like a native one for grub to boot it.  The worst thing
I've seen about it is that some machines change their idea of bios
disk 0 and 1 when the first one fails, so your grub setup might be
wrong even after you do it on the 2nd disk - and that would be the
same with/without raid.   As long as you are prepared to boot from a
rescue disk you can fix it easily anyway.

-- 
  Les Mikesell
    lesmikesell at gmail.com