[CentOS] md raid 10

m.roth at 5-cent.us m.roth at 5-cent.us
Wed Mar 7 15:01:43 EST 2012


Markus Falb wrote:
> On 7.3.2012 19:08, m.roth at 5-cent.us wrote:
>> Ross Walker wrote:
>>> On Mar 7, 2012, at 11:02 AM, Les Mikesell
>>> <lesmikesell-Re5JQEeQqe8AvxtiuMwx3w at public.gmane.org> wrote:
>>>
>>>> On Wed, Mar 7, 2012 at 9:49 AM, William Warren
>>>> <hescominsoon-dGSttIWD7Blt2rXhg/qq1LELw3D7xbbmMrMQPFiV5cM at public.gmane.org>
>>>> 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.
>
> You may have noticed that redhat recommends 250M
> http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6/html/Installation_Guide/s2-diskpartrecommend-x86.html

Yeah, well, some of us have many servers more than 4 yrs old; so I'm
assuming that three, four years from now, with CentOS 8 or 9, it'll do the
same, and want maybe 800M. Plan for the future, y'know.

        mark



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