CentOS - Nov 2007 - How to make fdisk recognize increased iSCSI LUN?

Hello,

  How to explain to fdisk that /dev/sda size changed? I increased LUN on
storage, reloaded iscsi, did echo 1 > /sys/<something>/rescan. And I
see in "dmesg" that kernel found new size of the LUN. But when I type
"fdisk /dev/sda" it still shows old size. On /dev/sda1 sits LVM PV and
I'd like to resize it instead of adding one more PV to volume group.

  CentOS 4.4 64bits.

  Thanks,

  Mindaugas

Mindaugas wrote:
> 
> 
>   Hello,
> 
>   How to explain to fdisk that /dev/sda size changed? I 
> increased LUN on storage, reloaded iscsi, did echo 1 > 
> /sys/<something>/rescan. And I see in "dmesg" that kernel 
> found new size of the LUN. But when I type "fdisk /dev/sda" 
> it still shows old size. On /dev/sda1 sits LVM PV and I'd 
> like to resize it instead of adding one more PV to volume group.
> 
I think it may be the MBR that still has the old size in it.

Try opening it in fdisk, save it, then re-open it.

-Ross

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On Nov 16, 2007 10:06 PM, Mindaugas <ml at kilimas.com>
wrote:
>
>   Hello,
>
>   How to explain to fdisk that /dev/sda size changed?
Try to send him an email fdisk at util-linux.org :-)
Please be polite :-)

or maybe try

# partprobe /dev/sda
>I increased LUN on storage, reloaded iscsi, did echo 1 >
/sys/<something>/rescan. And I see in "dmesg" that kernel found
new
size of the LUN. But when I type "fdisk /dev/sda" it still shows old
size. On /dev/sda1 sits LVM PV and I'd like to resize it instead of
adding one more PV to volume group.

I imagine sda1 is thee only partition on sda !

I know all LVM commands by hart and was not knowing pvresize !
What a crazy thing! A day it will be possible to move an entire
partition inside a disk, and doing this online !
Then LVM will become useless :-)
I thing a day a man will walk on the moon :-)



Regards

Alain

>
>   CentOS 4.4 64bits.
>
>   Thanks,
>
>   Mindaugas
> _______________________________________________
> CentOS mailing list
> CentOS at centos.org
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>


-- 
Alain Spineux
aspineux gmail com
May the sources be with you