Re: Rereading disk geometry without reboot

[Miquel van Smoorenburg]

In article <20041207172812.GD11423@xxxxxxxxxxxxxxxxxxxxxxxxx>,
Robin Holt  <holt@xxxxxxx> wrote:
>On Mon, Dec 06, 2004 at 02:23:56PM -0600, Andy wrote:
>> I am using linux kernel 2.6.9 on a san.  I have file systems on
>> non-partitioned disks.  I can resize the disk on the SAN, reboot and grow
>> the XFS file system those disks.  What I would like to avoid rebooting or
>> even unmounting the filesystem if possible.
>> 
>> Is there any way to get the kernel to re-read the disk geometry and change
>> the information it holds without rebooting or reloading the module (which is
>> as bad as a reboot in my case)?
>
>Does anybody know if lvm can do this?

Yes, with LVM and XFS you can grow a logical volume and resize XFS
to fit without taking the filesytem offline.

Mike.

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