[CentOS] md raid 10

m.roth at 5-cent.us m.roth at 5-cent.us
Wed Mar 7 13:08:45 EST 2012


Ross Walker wrote:
> On Mar 7, 2012, at 11:02 AM, Les Mikesell <lesmikesell at gmail.com> wrote:
>
>> On Wed, Mar 7, 2012 at 9:49 AM, William Warren
>> <hescominsoon at emmanuelcomputerconsulting.com> wrote:
>>> well ubuntu allows me to boot from MD RAID10...so there's something
>>> they are doing that allows that to boot.
>>
>> That ubuntu version has probably switched to grub2.  Good luck
>> debugging it when it breaks - it is very different.
>
> Plus it is very handy to have a /boot that is readable/mountable without
> LVM or MDRAID drivers loaded and configured.
>
> /boot is only 256-512MB partition that is read only during boot and
> updated only when there is a new kernel, so it ain't no big thing. Even
> when RH goes to grub2 I think I'll keep this setup by default.

Don't make it less than 512M - we're debating between 512M and 1G here.
Certainly, bleeding-edge fedora *needs* at least 256M *free* in /boot to
do an upgrade in place, so I have to assume that's coming in the next few
years for RHEL/CentOS.

        mark



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