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On Wed, 6 Mar 2013, Lei Zhang wrote:

> On Tue, Mar 5, 2013 at 10:04 PM, Scott Moser <smoser at ubuntu.com> wrote:
>
> > cloud-init > 0.7 (cloud-init invokes resize2fs)
>
>
> How this is possible to just call `resize2fs` to re-partition. As I know,
> this tool will not modify the partition information. Right?

in current world, cloud-initramfs-growroot grows the partition table from
the initramfs before / is in use, so the kernel can then re-read the
partition table.

then, cloud-init invokes resize2fs.


In future world (really close in ubuntu images for raring), cloud-init
invokes growpart (or parted) and then resize2fs.  3.8 kernel can be told
about the grown partition and growpart and parted (patches submitted) know
how to do that.