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.Dd November 28, 2007
.Dt DCFS 4FS
.Os
.Sh NAME
.Nm dcfs
.Nd Compression file system
.Sh SYNOPSIS
.In sys/filio.h
.In sys/fs/decomp.h
.Sh DESCRIPTION
The
.Nm
filesystem is a layered filesystem that you use to compress data when writing to
a file and decompress upon read.
The primary function of the
.Nm
filesystem is to compress individual files when constructing a boot archive and
when reading or booting from the archive.
.Sh INTERFACE STABILITY
.Sy Uncommitted
.Sh SEE ALSO
.Xr ufs 4FS ,
.Xr attributes 7 ,
.Xr boot 8 ,
.Xr bootadm 8 ,
.Xr fiocompress 8
.Sh NOTES
The
.Nm
compression/decompression file system works only with UFS.