On Fri, Aug 28, 2009 at 7:03 AM, Götz Reinicke -
IT-Koordinator<goetz.reinicke@xxxxxxxxxxxxxxx> wrote:
> Hi,
>
> I'm trying to set up an iscsi 12.5 TB storage for some data backup.
>
> Doing so, I had some difficulties to find the right tool, maybe it's
> also a question of the system settings...
>
> The server is a 32Bit CentOS 5.3 with the recent updates. Ths iscsi
> connection can be establised.
>
> fdisk and parted fail to create any information on the device or fail
> completely.
>
> using the lvm tools (pvcreate, vgcreate, lvcreate), I could finaly
> create a logical volume:
>
> lvdisplay /dev/VolGroup02/lvol0
> --- Logical volume ---
> LV Name /dev/VolGroup02/lvol0
> VG Name VolGroup02
> LV UUID h7T6tD-JZw2-UEdb-q1ml-BDqp-9E0u-mAop6x
> LV Write Access read/write
> LV Status available
> # open 0
> LV Size 12,73 TB
> Current LE 3337487
> Segments 1
> Allocation inherit
> Read ahead sectors auto
> - currently set to 256
> Block device 253:4
>
>
> But, I can't create a filesystem on it:
>
> mkfs.ext3 -m 2 -j -O dir_index -v -b 4096 -L iscsi2lvol0
> /dev/mapper/VolGroup02-lvol0
You have to smack mkfs around a bit to get it to work.
The incantations are listed here, along with the various limitations.
The long and short of it is that you have to use -F to tell mkfs that
you're really, REALLY sure.
http://www.bofh-hunter.com/2008/02/11/large-filesystem-creation/
--
During times of universal deceit, telling the truth becomes a revolutionary act.
George Orwell
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