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From: Jes Sorensen <Jes.Sorensen@redhat.com>
To: Stefan Priebe - Profihost AG <s.priebe@profihost.ag>
Cc: linux-raid@vger.kernel.org
Subject: Re: grub2/grub-pc install not possible on mdadm
Date: Thu, 01 Mar 2012 11:38:22 +0100	[thread overview]
Message-ID: <4F4F519E.7040206@redhat.com> (raw)
In-Reply-To: <4F4F4EB3.6030909@profihost.ag>

On 03/01/12 11:25, Stefan Priebe - Profihost AG wrote:
>> > I am not sure whether this is the reason, but you have disks with gpt
>> > partition tables, while it looks like you are still using grub1? I
>> > didn't think grub1 was able to handle gpt.
> ~# grub-setup -V
> grub-setup (GRUB) 1.99-14

Not grub1 then .....

Looking at your original mail again - you are running a raid with
metadata 1.2, which means your BIOS will not know how to read the disks
as a raid device.

You should be able to install grub into the MBR of /dev/sda or /dev/sdb.
I believe that is possible with 1.2 metadata. 1.1 was totally broken for
this if I remember correctly.

That said, if your system is EFI based, I suspect you will need to have
the bios_grub partition on the physical drives so the BIOS can read it.
It's not going to do much good having it on the raid partition if the
BIOS isn't able to read those.

BIOS and partition tables isn't exactly my area of expertise, so I could
be wrong on some of this.

Cheers,
Jes

  reply	other threads:[~2012-03-01 10:38 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-02-28  9:10 grub2/grub-pc install not possible on mdadm Stefan Priebe - Profihost AG
2012-03-01 10:10 ` Jes Sorensen
2012-03-01 10:25   ` Stefan Priebe - Profihost AG
2012-03-01 10:38     ` Jes Sorensen [this message]
2012-03-02  8:44       ` Stefan Priebe - Profihost AG
2012-03-02  9:06         ` Lars Täuber
2012-03-02  9:11           ` Stefan Priebe - Profihost AG
2012-03-02  9:24             ` John Robinson
2012-03-02  9:33               ` Stefan Priebe - Profihost AG
2012-03-02 11:14                 ` John Robinson
2012-03-02 13:15                   ` Stefan Priebe - Profihost AG
2012-03-02 13:45                     ` John Robinson
2012-03-02 15:32                     ` Lars Täuber
2012-03-05  7:50                       ` Stefan Priebe - Profihost AG
2012-03-05  9:38                         ` John Robinson
2012-03-05 10:14                           ` Lars Täuber
2012-03-05 11:31                             ` John Robinson
2012-03-05 11:38                               ` Lars Täuber
2012-03-05 12:34                                 ` John Robinson
2012-03-02  9:14           ` Lars Täuber
2012-03-02  9:15           ` Lars Täuber
2012-03-02 10:56         ` Jes Sorensen

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