cloud-initramfs-growroot - 0.18.debian7 main

This package adds functionality to an initramfs built by initramfs-tools.
When installed, the initramfs will repartition a disk to make the
root volume consume all space that follows it.
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You most likely do not want this package unless you know what you are
doing. It is primarily interesting in a virtualized environment when
a disk can provisioned with a size larger than its original size.
In this case, with this package installed, you can automatically use
the new space without requiring a reboot to re-read the partition table.