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geom_uzip - GEOM based compressed disk images
To compile this driver into the kernel, place the following line in your
kernel configuration file:
Alternatively, to load the driver as a module at boot time, place the
following line in loader.conf(5):
The geom_uzip framework provides support for compressed read only disk
images. This allows significant storage savings at the expense of a
little CPU time on each read. Data written in the GEOM label area allows
geom_uzip to detect compressed images which have been created with
mkuzip(8) and presented to the kernel as a logical disk device via md(4).
geom_uzip creates a unique md#.uzip device for each image.
The geom_uzip device is subsequently used by the FreeBSD kernel to access
the disk images. The geom_uzip driver does not allow write operations to
the underlying disk image. To check which md(4) devices match a given
# geom uzip list
Geom name: md1.uzip
1. Name: md1.uzip
Mediasize: 22003712 (21M)
1. Name: md1
Mediasize: 9563648 (9.1M)
GEOM(4), md(4), geom(8), mkuzip(8)
The geom_uzip driver was written by Max Khon 〈fjoe@FreeBSD.org〉. This
manual page was written by Ceri Davies 〈ceri@FreeBSD.org〉.