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My first thought was to do a singled fixed disk and never resize that disk
at all. If you need space, you have to use a volume service.

Ultimately, I don't think this the right approach either, but it solves the
initial use case of needing more storage space.



On Fri, Sep 2, 2011 at 11:34 AM, Chris Behrens
<chris.behrens at rackspace.com>wrote:

>
> On Sep 2, 2011, at 8:07 AM, Paul Voccio wrote:
>
> > On Fri, Sep 2, 2011 at 8:01 AM, Soren Hansen <soren at linux2go.dk> wrote:
> > [...]
> > The potential for filesystem bugs that could bring the host down gives
> > me the heebie jeebies. I really, really don't want to mount people's
> > filesystems.
> >
> >
> > Can you explain a bit more here? I would like to understand your
> concerns. I would advocate mounting in a utility VM if you mean to protect
> from mounting instance with malicious data. We may have to do this to expand
> partitions or resize down for Windows.
>
> Mounting someone's filesystem should not be necessary if we have certain
> restrictions on the management.  I.e., we could say we will only resize the
> last filesystem in the partition table.  That would avoid needing to know
> the filesystem layout in the image (looking at /etc/fstab or updating it).
>  Not sure that's a desired restriction, however.
>
> That said, we'd still need to attach the VM disk somewhere and run fs
> resize utils... and it might still be best to do this in a utility VM.
>
> - Chris
>
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