RE: Re: Anaconda doesn't support raid10

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> -----Original Message-----
> From: centos-bounces@xxxxxxxxxx 
> [mailto:centos-bounces@xxxxxxxxxx] On Behalf Of Ruslan Sivak
> Sent: Friday, May 11, 2007 3:34 PM
> To: CentOS mailing list
> Subject: Re:  Re: Anaconda doesn't support raid10
> 
> Ross S. W. Walker wrote:
> > I think if you setup the 4 disk raid1 at boot grub gets installed
> > on each as part of the install process.
> >
> > You'd only need to do it yourself if you put a new disk to replace
> > a failed one, then just run grub-install on it.
> >
> > -Ross
> >
> >   
> Why is this exactly?  Does it have something to do with the 
> boot sector 
> or something? Doesn't the raid1 take care of mirroring everything on 
> that partition (with the exception of the boot sector of the drive?)

Exactly, grub is installed on sector 0, the boot sector, and that
sector isn't touched when a new drive is partitioned and thus not
part of the mirrored data.

You may also have to mark the /boot partitions on each drive as
bootable too, but grub may just ignore that flag... I can't remember.

-Ross

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