Re: [PATCH] disk/mdraid1x: Fix >2TB RAID detection with BIOS

[Andrei Borzenkov <arvidjaar@gmail.com>]

18.11.2016 21:06, Robert LeBlanc пишет:
> On Fri, Nov 18, 2016 at 10:31 AM, Andrei Borzenkov <arvidjaar@gmail.com> wrote:
>> 18.11.2016 19:49, Robert LeBlanc пишет:
>>> Based on debug info, GRUB is requesting to read the end of the drive
>>> to read the mdadm 1.0 superblock and gets the following message:
>>>
>>> kern/disk.c:421: Read out of range: sector 0x27fffffc8 (attempt to
>>> read or write outside of disk 'hd0').
>>>
>>
>> Is MD RAID on whole disk or partition? What partition label - MBR or
>> GPT? Could you post fdisk -l from Linux (if your fdisk does not support
>> GPT, use "gdisk -l /dev/sdX")?
> 
> # gdisk -l /dev/sda
> GPT fdisk (gdisk) version 1.0.1
> 
> Partition table scan:
>  MBR: protective
>  BSD: not present
>  APM: not present
>  GPT: present
> 
> Found valid GPT with protective MBR; using GPT.
> Disk /dev/sda: 10737418240 sectors, 5.0 TiB
> Logical sector size: 512 bytes
> Disk identifier (GUID): 939F7AAD-AADD-481D-8896-DA0B4033C70C
> Partition table holds up to 128 entries
> First usable sector is 2048, last usable sector is 10737418206
> Partitions will be aligned on 2048-sector boundaries
> Total free space is 0 sectors (0 bytes)
> 
> Number  Start (sector)    End (sector)  Size       Code  Name
>   1            2048            4095   1024.0 KiB  EF02
>   2            4096     10737418206   5.0 TiB     FD00
> 
> partition # is a mdadm RAID 1 member partitioned as follows...
> 
> # sgdisk -l /dev/md123
> # parted /dev/md123 print free
> Model: Linux Software RAID Array (md)
> Disk /dev/md123: 5497GB
> Sector size (logical/physical): 512B/512B
> Partition Table: gpt
> Disk Flags:
> 
> Number  Start   End     Size    File system     Name  Flags
>        17.4kB  1049kB  1031kB  Free Space
> 1      1049kB  2097kB  1049kB                        bios_grub
> 2      2097kB  5371MB  5369MB  linux-swap(v1)
> 3      5371MB  6371MB  1000MB  ext2
> 4      6371MB  5497GB  5491GB  ext4
>        5497GB  5497GB  966kB   Free Space
> 
> /dev/sdb is partitioned identically to /dev/sda
> 

OK, could you please also show "ls -l" in grub CLI; if you cannot
capture serial console, attach screenshot(s). You may want to "set
pager=1" so output does not scroll off screen.