[Info-vax] Disk size in the virtual world

[Volker Halle]

Am 24.02.2024 um 04:19 schrieb Arne Vajhøj:
> So I tried to increase the size of a virtual disk
> from 20 GB to 30 GB.
> 
> And I ended up with:
> 
> Total blocks            62914560
> Logical Volume Size     41943040
> 
> Which is really rather logical. The file system
> was created for 20 GB. But obviously not what I want.
> 
> I assume that backup + init + restore will fix it,
> but are there any easier way of doing it?
> 
> ODS-5 on VMS 9.2-2 on VMWare Player if it matters.
> 
> Arne
> 
> 
Arne,

after the appropriate preparation, an OpenVMS volume can be extended 
dynamically (it's called DVE = Dynamic Volume Expansion).

First check the volume expansion limit with

$ SHOW DEV/FUL DKAx:
...
Logical Volume Size nnn Expansion Size Limit nnn

If your desired new volume size is less than the Expansion Size Limit, 
you can simply extend the disk online with:

$ SET VOLUME/SIZE DKAx:

If the current Expansion Size Limit is too small, you need to increase 
it. This can ONLY be done while the disk is mounted privately:

$ SET VOLUME/LIMIT DKAx:

You can then re-mount the disk system-wide and actually extend it with 
SET VOLUME/SIZE DKAx:

Volker.

PS: copied from my answer in ITRC back from 2006 ;-)
https://community.hpe.com/t5/operating-system-openvms/expanding-extending-eva-volume-on-openvms/td-p/3823829