[CentOS] CentOS 6.2 software raid 10 with LVM - Need help with degraded drive and only one MBR

Jonathan Vomacka juvix88 at gmail.com
Sat Mar 3 00:48:01 EST 2012



On 3/2/2012 3:38 PM, Tru Huynh wrote:
> On Fri, Mar 02, 2012 at 09:03:44AM -0500, Jonathan Vomacka wrote:
>> CentOS Community,
>>
>> I have a dedicated server with 4 hard drives in a RAID 10 software
>> configuration running LVM. My OS is CentOS 6.2. Earlier today, I
>> rebooted my system and my system did not come back online. I opened a
>> ticket with my datacenter who informed me that one of my hard drives is
>> no longer recognized by the bios and has failed. I was told that an OS
>> reinstall was needed.
>
> how was your disks partitions? and how was the lvm setup?
> was /boot made of a mdadm raid1 array?
>
> there is a dracut issue on raid1 array (fixed by now, if you updated
> to the latest dracut release and rebuild your initramfs):
> http://bugs.centos.org/view.php?id=5400
>
> Btw the anaconda installer does install grub on the MBR of both raid1 members.
> No idea if it does so for lvm over raid10 array.
>
> Tru
>
>
>
>
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Tru,

This was a raid 10, would the same apply? If I do a fresh reinstall how 
can I guarantee that the MBR is across all drives?


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