[WBEL-users] Grub and raid - Solved

[Josep M.]

Hi

Read this,is the two first commands for make both disks bootables.

http://www.dur.ac.uk/a.d.stribblehill/mirrored_grub.html

Josep


> Doesn't anyone know how to recover from a failed master using software
> RAID?
>
>
>
>
>   ----- Original Message -----
>   From: Thrift Internet Service
>   To: Simone ; whitebox-users@beau.org
>   Sent: Friday, April 09, 2004 12:49 PM
>   Subject: Re: [WBEL-users] Grub and raid - Solved
>
>
>   I tried Fredrick Denny's recipe. I was able to recover from a failed
> slave drive and duplicate a new slave without a problem, but I can't
> seem to get the slave to be bootable after a failed master.
>
>   I moved the cable so the slave drive is now the master (/hde). I boot
> with the install CD and go into 'linux rescue'. At the command prompt I
> confirm that the drive is there with 'fdisk -l' and everything looks
> fine. Then I try to mount:
>
>   mount /dev/hde1 /mnt/fred
>
>   mount: Mounting /dev/hde1 on /mnt/fred failed: No such file or
> directory.
>
>   Of course there is no point in going any further. What happened when you
> simulated a master failure?
>
>
>
>     ----- Original Message -----
>     From: Simone
>     To: whitebox-users@beau.org
>     Sent: Wednesday, April 07, 2004 12:54 PM
>     Subject: Re: [WBEL-users] Grub and raid - Solved
>
>
>     Hi list,
>     Thanks to  Frederick Denny document I figured it out.
>     To anyone it could interest, this works:
> http://www.freddenny.com/UNIX/linuxRAID.html
>
>     Thanks anyway to anyone who paid attention to my message.
>     Simone
>
>
>       ----- Original Message -----
>       From: Simone
>       To: whitebox-users@beau.org
>       Sent: Wednesday, April 07, 2004 9:04 PM
>       Subject: [WBEL-users] Grub and raid
>
>
>       Hi, as usual, having a question....
>       Say I have a raid 1, disks A and B in mirroring, Say A dies, and I
> replace it with C. How can I make grub write the MBR to C so that in
> case B also dies I can still boot from C?
>       Know it's a simple question, but I tried grub-install /dev/hdc or
> /dev/md0 (where the boot partition is) and I just get errors. I am
> now trying to move to lilo, but I am scared to write the MBR of the
> last good disk I have.
>
>       Help really appreciated, it looks like I'll be working all night
> :-(
>
>       Thanks,
>       Simone
>
>
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