On 14 Jun 2006, at 12:51, David McBride wrote:
> On Wed, 2006-06-14 at 09:59 +0100, Steve Traylen wrote:
>
>>> I haven't been following the entire thread, but would it not be
>>> possible
>>> to use an LVM[0] to partition the available physical space into
>>> partitions, one (or more) for each VO?
>>
>> The spaces don't nescesarily correspond to physical devices. The
>> size of
>> each space, a directory is specified at creation time though can
>> be expanded,
>> I expect they can be reduced as well occupency permitting.
>
> I'm not sure I understand; would it be correct for me to restate the
> above as:
>
> "The set of filesystem volumes that would be needed to support each VO
> do not necessarily map simply to the underlying physical volumes.
> Thus
> LVM may not help?"
>
> (Or have I completely misunderstood?)
>
> LVM provides a facility where individual physical volumes can be
> grouped
> into Volume Groups. Logical volumes can then be added to volume
> groups
> -- and later deleted or resized as necessary.
Just to note that you shouldn't xfs with LVM - on 32bit machines with
4k stacks it's a quick route to disaster.
g
--
Dr Graeme Stewart - http://wiki.gridpp.ac.uk/wiki/User:Graeme_stewart
GridPP DM Wiki - http://wiki.gridpp.ac.uk/wiki/Data_Management
|