From: Mick <michaelkintzios@gmail.com>
To: gentoo-user@lists.gentoo.org
Subject: Re: [gentoo-user] Re: [O/T] RAID help - now won't boot
Date: Sun, 20 Oct 2013 14:13:32 +0100 [thread overview]
Message-ID: <201310201413.59198.michaelkintzios@gmail.com> (raw)
In-Reply-To: <5263D33E.2050509@hadt.biz>
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On Sunday 20 Oct 2013 13:57:34 Michael Hampicke wrote:
> Am 20.10.2013 11:54, schrieb Mick:
> > Any ideas why the Ubuntu installation won't boot?
>
> My guess would be, you cannot boot, because if you install grub in
> /dev/md0.
>
> Upon boot the bios cannot find stage1 of the bootloader, which normally
> lies in the MBR (which also houses the partition table).
I see ... so installing the MBR code in the /dev/md0 block device is further
down the disk than where BIOS is looking for it and that's why it errors out?
Meanwhile, there is no MBR or partition table on /dev/sda or /dev/sdb for BIOS
to jump to. Hmm ...
It seems to me then that I *have* to create normal partitions on /dev/sda &
/dev/sdb, or I would need a different boot drive. Is there another way to
overcome this problem.
> Is a setup as you wish - sda and sdb as raid1, and partitions only on
> md0 - bootable in general?
Yes, in this case. It makes easy to set a faulty drive in failed state and
remove it from RAID in a single step, rather than the alternative which would
involve removing multiple /dev/mdX, one for each partition. I could I guess
install LVM on top of RAID, but this adds complexity for a functionality
(increasing LV sizes) which will not be used in this implementation.
Any suggestions welcome.
--
Regards,
Mick
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next prev parent reply other threads:[~2013-10-20 13:14 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-15 7:34 [gentoo-user] RAID help Mick
2013-10-15 19:28 ` Paul Hartman
2013-10-15 21:42 ` Mick
2013-10-16 18:10 ` [gentoo-user] " Nicolas Sebrecht
2013-10-16 20:14 ` Nicolas Sebrecht
2013-10-17 5:33 ` Mick
2013-10-20 9:54 ` [gentoo-user] Re: [O/T] RAID help - now won't boot Mick
2013-10-20 12:57 ` Michael Hampicke
2013-10-20 13:13 ` Mick [this message]
2013-10-20 13:31 ` Michael Hampicke
2013-10-20 14:31 ` joost
2013-10-21 5:33 ` Mick
2013-10-21 5:59 ` J. Roeleveld
2013-10-21 8:24 ` Nicolas Sebrecht
2013-10-21 8:55 ` J. Roeleveld
2013-10-21 21:42 ` Mick
2013-10-22 7:10 ` Nicolas Sebrecht
2013-10-24 18:53 ` Mick
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