difference between ExtX and UFS

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dcfs

dcfs(7FS)							   File Systems 							 dcfs(7FS)

NAME

       dcfs - Compression file system

SYNOPSIS

       #include <sys/filio.h>
       #include <sys/fs/decomp.h>

DESCRIPTION

       The  dcfs  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 dcfs filesystem is to compress individual files when constructing a boot archive and when reading or booting from  the  ar-
       chive.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------------------------------------+
       |ATTRIBUTE TYPE		      ATTRIBUTE VALUE		   |
       |Interface Stability	      Uncommitted		   |
       +-----------------------------------------------------------+

SEE ALSO

       boot(1M), bootadm(1M), fiocompress(1M), attributes(5), ufs(7FS)

NOTES

       The dcfs compression/decompression file system works only with UFS.

SunOS 5.11							    28 Nov 2007 							 dcfs(7FS)

Filesystems, Disks and Memory