[linux-lvm] rescanning a physical volume

Heinz J . Mauelshagen mauelshagen at sistina.com
Tue Jul 15 16:08:01 UTC 2003

On Tue, Jul 15, 2003 at 12:16:30PM +1000, daniel.holt at centrelink.gov.au wrote:
> Hi,
> we are messing around with LVM and dynamically increasing SAN disk 
> capacity.

There's none in LVM1.
LVM2 will have support for physical volume resizing soon.

Heinz    -- The LVM Guy --

> We are trying to get to a point where we can increase capacity to the host 
> dynamically on demand without interruption to the host. This is one of the 
> major advantages of a storage area network, we can increase the size of a 
> LUN on the fly, then we just need the host to pick it up. The reiser FS 
> can successfully increase itself over the new volume, we are just trying 
> to get LVM to pickup the new size of the physical volume.
> Is there a command to re-scan the size of a physical device and update the 
> physical volume under LVM. We can't seem to find one.
> any suggestions are very appreciated.
> Daniel Holt
> SAN Tuning & Storage Administrator
> PH: (02) 6219 8047
> MOB: 0414 99 22 63
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Heinz Mauelshagen                                 Sistina Software Inc.
Senior Consultant/Developer                       Am Sonnenhang 11
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Mauelshagen at Sistina.com                           +49 2626 141200
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