[Gllug] I/O messages for non existant device?

[j.roberts]

On 15/12/10 12:44, Oliver Howe wrote:

> Disk /dev/sda: 299.4 GB, 299439751168 bytes
> 255 heads, 63 sectors/track, 36404 cylinders
> Units = cylinders of 16065 * 512 = 8225280 bytes
>     Device Boot      Start         End      Blocks   Id  System
> /dev/sda1   *           1          32      257008+  83  Linux
> /dev/sda2              33        1307    10241437+  83  Linux
> /dev/sda3            1308        1829     4192965   82  Linux swap / Solaris
> /dev/sda4            1830       36404   277723687+   5  Extended
> /dev/sda5            1830       36404   277723656   83  Linux
> WARNING: GPT (GUID Partition Table) detected on '/dev/sdb'! The util
> fdisk doesn 't support GPT. Use GNU Parted.
>
> WARNING: The size of this disk is 13.0 TB (12995660873728 bytes).
> DOS partition table format can not be used on drives for volumes
> larger than 2.2 TB (2199023255040 bytes). Use parted(1) and GUID
> partition table format (GPT).
>
> Disk /dev/sdb: 12995.6 GB, 12995660873728 bytes
> 255 heads, 63 sectors/track, 1579965 cylinders
> Units = cylinders of 16065 * 512 = 8225280 bytes
>     Device Boot      Start         End      Blocks   Id  System
> /dev/sdb1               1      267350  2147483647+  ee  EFI GPT
> Disk /dev/sdc: 20 MB, 20971520 bytes
> 64 heads, 32 sectors/track, 20 cylinders
> Units = cylinders of 2048 * 512 = 1048576 bytes
>     Device Boot      Start         End      Blocks   Id  System
> Disk /dev/sde: 20 MB, 20971520 bytes
> 64 heads, 32 sectors/track, 20 cylinders
> Units = cylinders of 2048 * 512 = 1048576 bytes
>     Device Boot      Start         End      Blocks   Id  System

I don't know enough about your system to be much help. However it looks 
like (probably) the array is presenting sdb, sdc, (sdd) and sde, with 
some failure mode in sdc and sdd (sdd fatal I/O error - it is not even 
listed).

If it was me I'd be getting onto my array supplier support team RSN to 
disentangle what is happening. What these 20MB blocks of the system are 
doing is not clear to me but I would worry about it a lot until I knew.

MeJ

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