[linux-lvm] md: personality for level 1 is not loaded

[linux-lvm] md: personality for level 1 is not loaded

[MegaBrutal]

Hi all,

I have an inconvenient boot-time phenomenon which prevents me from
booting a RAID1 mirrored root volume.

Reported it on Launchpad:
https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/1509717

It's most probably distro-specific, but I wonder if you have some comments.

Thanks if you check it out!


Best regards,
MegaBrutal

Re: [linux-lvm] md: personality for level 1 is not loaded

[Heinz Mauelshagen]

Hi,

this is likely caused by a missing raid1 module in the initramfs,
as now commented on the referenced bz as well.

Your Ubuntu kernel package needs fixing itr.

- lvmguy

On 10/25/2015 01:05 AM, MegaBrutal wrote:
> Hi all,
>
> I have an inconvenient boot-time phenomenon which prevents me from
> booting a RAID1 mirrored root volume.
>
> Reported it on Launchpad:
> https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/1509717
>
> It's most probably distro-specific, but I wonder if you have some comments.
>
> Thanks if you check it out!
>
>
> Best regards,
> MegaBrutal
>
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@redhat.com
> https://www.redhat.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/

Re: [linux-lvm] md: personality for level 1 is not loaded

[James Hawtin]

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I find it is important with md to make sure your /boot or / if you do not have one uses metadata version 0.90 which sticks the metadata at the end of the disk, not the beginning. Grub does not really understand metadisk however a mirrored fs with metadata at the end can be read read only like a normal fs, and that is how it works.

James

On 30 October 2015 12:59:47 GMT+00:00, Heinz Mauelshagen <heinzm@redhat.com> wrote:
>
>Hi,
>
>this is likely caused by a missing raid1 module in the initramfs,
>as now commented on the referenced bz as well.
>
>Your Ubuntu kernel package needs fixing itr.
>
>- lvmguy
>
>On 10/25/2015 01:05 AM, MegaBrutal wrote:
>> Hi all,
>>
>> I have an inconvenient boot-time phenomenon which prevents me from
>> booting a RAID1 mirrored root volume.
>>
>> Reported it on Launchpad:
>>
>https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/1509717
>>
>> It's most probably distro-specific, but I wonder if you have some
>comments.
>>
>> Thanks if you check it out!
>>
>>
>> Best regards,
>> MegaBrutal
>>
>> _______________________________________________
>> linux-lvm mailing list
>> linux-lvm@redhat.com
>> https://www.redhat.com/mailman/listinfo/linux-lvm
>> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
>
>_______________________________________________
>linux-lvm mailing list
>linux-lvm@redhat.com
>https://www.redhat.com/mailman/listinfo/linux-lvm
>read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/

-- 
Sent from my Android device with K-9 Mail. Please excuse my brevity.

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Re: [linux-lvm] md: personality for level 1 is not loaded

[Dragan Milivojević]

On Fri, Oct 30, 2015 at 2:23 PM, James Hawtin <oolon@ankh.org> wrote:
> I find it is important with md to make sure your /boot or / if you do not
> have one uses metadata version 0.90 which sticks the metadata at the end of
> the disk, not the beginning. Grub does not really understand metadisk
> however a mirrored fs with metadata at the end can be read read only like a
> normal fs, and that is how it works.

grub2 fully supports raid so grub should not be an issue, 0.9 metadata
is quite ancient
and should not be used. Metadata 1.0 (1.0 not 1) should be used with
boot loaders
that do not understand raid (EFI ESP is a good use case for 1.0 metadata).

Dragan