Re: ext4 filesystem not recognised on new LVM volume

[John Lane]

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.
>>