diff options
| author | Richard Laager <[email protected]> | 2012-04-10 20:03:26 -0500 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2012-04-11 10:42:02 -0700 |
| commit | f4605f07a2901566c9d4ae84e7c17e3ba827ce8a (patch) | |
| tree | 814acdc7293d104862864ab9c10bfd3d5bcf9fbe | |
| parent | f0fd83be65152a218c7daa1d006b53fb4b79bdce (diff) | |
Document the zle compression algorithm
Signed-off-by: Richard Laager <[email protected]>
Signed-off-by: Brian Behlendorf <[email protected]>
| -rw-r--r-- | man/man8/zfs.8 | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/man/man8/zfs.8 b/man/man8/zfs.8 index 26dc6cadc..d2372695d 100644 --- a/man/man8/zfs.8 +++ b/man/man8/zfs.8 @@ -660,11 +660,15 @@ Changing this property affects only newly-written data. .ne 2 .mk .na -\fB\fBcompression\fR=\fBon\fR | \fBoff\fR | \fBlzjb\fR | \fBgzip\fR | \fBgzip-\fR\fIN\fR\fR +\fBcompression\fR=\fBon\fR | \fBoff\fR | \fBlzjb\fR | \fBgzip\fR | \fBgzip-\fR\fIN\fR | \fBzle\fR .ad .sp .6 .RS 4n -Controls the compression algorithm used for this dataset. The \fBlzjb\fR compression algorithm is optimized for performance while providing decent data compression. Setting compression to \fBon\fR uses the \fBlzjb\fR compression algorithm. The \fBgzip\fR compression algorithm uses the same compression as the \fBgzip\fR(1) command. You can specify the \fBgzip\fR level by using the value \fBgzip-\fR\fIN\fR where \fIN\fR is an integer from 1 (fastest) to 9 (best compression ratio). Currently, \fBgzip\fR is equivalent to \fBgzip-6\fR (which is also the default for \fBgzip\fR(1)). +Controls the compression algorithm used for this dataset. The \fBlzjb\fR compression algorithm is optimized for performance while providing decent data compression. Setting compression to \fBon\fR uses the \fBlzjb\fR compression algorithm. +.sp +The \fBgzip\fR compression algorithm uses the same compression as the \fBgzip\fR(1) command. You can specify the \fBgzip\fR level by using the value \fBgzip-\fR\fIN\fR where \fIN\fR is an integer from 1 (fastest) to 9 (best compression ratio). Currently, \fBgzip\fR is equivalent to \fBgzip-6\fR (which is also the default for \fBgzip\fR(1)). +.sp +The \fBzle\fR (zero-length encoding) compression algorithm is a fast and simple algorithm to eliminate runs of zeroes. .sp This property can also be referred to by its shortened column name \fBcompress\fR. Changing this property affects only newly-written data. .RE |