Manual Reference Pages - GEOM_UNCOMPRESS (4)
- GEOM based compressed disk images
To compile this driver into the kernel, place the following line in your
kernel configuration file:
.Cd options GEOM_UNCOMPRESS
Alternatively, to load the driver as a module at boot time, place the
following line in
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
to detect compressed images which have been created with
and presented to the kernel as a logical disk device via
creates a unique
device for each image.
device is subsequently used by the
kernel to access the disk images.
driver does not allow write operations to the underlying disk image.
To check which
devices match a given
# geom uncompress list
Geom name: md0.uncompress
1. Name: md0.uncompress
Mediasize: 52428800 (50M)
1. Name: md0
Mediasize: 20864000 (20M)
driver was written by
.An Maxim Sobolev Aq sobomax@FreeBSD.org
.An Aleksandr Rybalko Aq ray@FreeBSD.org .
This manual page was written by
.An Luiz Otavio O Souza Aq loos@FreeBSD.org .
Visit the GSP FreeBSD Man Page Interface.
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