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Re: ext4 filesystem not recognised on new LVM volume

From: John Lane
Subject: Re: ext4 filesystem not recognised on new LVM volume
Date: Wed, 17 Dec 2014 15:42:02 +0000
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.1.2

On 17/12/14 15:03, Andrei Borzenkov wrote:
> On Wed, Dec 17, 2014 at 5:41 PM, John Lane <address@hidden> wrote:
>> On 15/12/14 13:28, Andrei Borzenkov wrote:
>>> On Mon, Dec 15, 2014 at 3:51 PM, John Lane <address@hidden> wrote:
>>>> On 15/12/14 12:27, John Lane wrote:
>>>>> I'm going to wipe the disk and start over and see if I can reproduce it.
>>>> Ok, I believe this is a 2TiB issue.
>>>> I just wiped the disk, created a new PV on it and created 3 LVs on the PV.
>>>> LV1 5GiB ext4
>>>> LV2 2TiB ext4
>>>> LV3 5GiB ext4
>>>> Grub can read LV1 and LV2 but not LV3.
>>> And if you create physical partitions of the same size?
>> Sorry for delay in responding but I needed to use the disk as a transit
>> drive.
>> Anyway, I just created a new GPT with partition 1=5G, 2=2T and 3=5G.
>> I wrote new ext4 filesystems to each of them.
>> grub can read partitions 1 and 2 but not partition 3.
> I suspect it hits BIOS 2TB limit. If you have AHCI compatible
> controller, you could try command "nativedisk" which attempts to
> switch from BIOS to native AHCI. No guarantee that it will work; but
> if it will, it should lift 2TB limit. Better try with git master.
that works. I never knew about "nativedisk".

grub> ls (ata0,3)/

Also works with LVM.
>> I am doing
>> grub> ls (hd1,1)/
>> etc.

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