[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: grub.cfg for RAID devices

From: Pascal Hambourg
Subject: Re: grub.cfg for RAID devices
Date: Wed, 15 Sep 2021 12:13:29 +0200
User-agent: Mozilla/5.0 (X11; Linux i686; rv:78.0) Gecko/20100101 Thunderbird/78.14.0

Le 15/09/2021 à 11:48, Stéphane Delaunay a écrit :

on Tuesday, September 14th, 2021 at 9:39 PM, Pascal Hambourg 
<> wrote:
Is there a /grub/grub.cfg file in the boot RAID array ?

There indeed isn't one. I had opted-out of installing a bootloader, because 
GRUB was already there and I don't know how to mirror it onto the second drive 

The /boot-partition currently only contains the kernel/init files.

You should consider using one. If I understand correctly the grub.cfg file on flash, it looks for this kind of file. Also, a proper grub.cfg contains the list of installed kernels and extra kernel parameters.

When you are in the system, you just need to install the package grub2-common and run update-grub to generate a proper grub.cfg. It will be automatically updated after each kernel upgrade.

What I meant was that I couldn't access the RAID partition by reading any 
(ahciX,msdosX) partition, because it would give that error. However, this does 
not seem to be important and is probably just normal behavior, because they 
were formatted in that way.

Yes, it is expected behaviour with the default RAID superblock v1.2 which is located at the beginning of the RAID member device, creating an offset for data. RAID 1 members can be used as plain devices only if they have a RAID superblock 0.9 or 1.0 which is located at the end.

Unfortunately, even after adding "insmod mdraid1x" to the config I had, the 
default boot option would not find the md-devices,

IIUC this is because of the missing grub.cfg in the boot filesystem.

reply via email to

[Prev in Thread] Current Thread [Next in Thread]