[CentOS] Problems with 2.3TB disk

Peter Kjellström cap at nsc.liu.se
Sat Sep 30 09:38:49 UTC 2006


A few relevant comments (inline below)

On Saturday 30 September 2006 07:10, Shawn Everett wrote:
> Hi Guys,
>
> I have a server running CentOS 4.2 with a 2.6.9-22EL-smp kernel.

Why not run a fully updated centos-4?

> The system contains a 2.3 TB RAID 5 array.  There is a 20GB root partition
> with the remainder of the drive configured one large LVM volume. (/u0)
> ...
> I cannot do any of the following to the backup file: Use cat, dd or cp to
> copy the file.  The first part of the file aproximately 24MB will copy and
> then I get the error message: Input/output error

Booting from it implies that you have a "normal" partition table on the 2.3T 
device, this does not work (dos style MBRs only works with <2T). Most people 
boot from a small and independent device and uses gpt (see parted) on the big 
device or no table at all (lvm directly on the device).

Good luck,
 Peter

> Checking dmesg shows:
> dm-0: rw=0, want=31933816664, limit=4838391808
> attempt to access beyond end of device
> dm-0: rw=0, want=32472792952, limit=4838391808
> attempt to access beyond end of device
> dm-0: rw=0, want=33011769240, limit=4838391808
> attempt to access beyond end of device
> dm-0: rw=0, want=33550745528, limit=4838391808
> attempt to access beyond end of device
> dm-0: rw=0, want=34089721816, limit=4838391808
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