diff options
Diffstat (limited to 'man/man8')
| -rw-r--r-- | man/man8/zfsprops.8 | 36 |
1 files changed, 35 insertions, 1 deletions
diff --git a/man/man8/zfsprops.8 b/man/man8/zfsprops.8 index 1fcb07c6f..11ec29832 100644 --- a/man/man8/zfsprops.8 +++ b/man/man8/zfsprops.8 @@ -36,6 +36,7 @@ .\" Copyright 2019 Richard Laager. All rights reserved. .\" Copyright 2018 Nexenta Systems, Inc. .\" Copyright 2019 Joyent, Inc. +.\" Copyright (c) 2019, Kjeld Schouten-Lebbing .\" .Dd January 30, 2020 .Dt ZFSPROPS 8 @@ -773,7 +774,8 @@ for more information on these algorithms. Changing this property affects only newly-written data. .It Xo .Sy compression Ns = Ns Sy on Ns | Ns Sy off Ns | Ns Sy gzip Ns | Ns -.Sy gzip- Ns Em N Ns | Ns Sy lz4 Ns | Ns Sy lzjb Ns | Ns Sy zle +.Sy gzip- Ns Em N Ns | Ns Sy lz4 Ns | Ns Sy lzjb Ns | Ns Sy zle Ns | Ns Sy zstd Ns | Ns +.Sy zstd- Ns Em N Ns | Ns Sy zstd-fast Ns | Ns Sy zstd-fast- Ns Em N .Xc Controls the compression algorithm used for this dataset. .Pp @@ -841,6 +843,38 @@ is equivalent to .Pc . .Pp The +.Sy zstd +compression algorithm provides both high compression ratios and good +performance. You can specify the +.Sy zstd +level by using the value +.Sy zstd- Ns Em N , +where +.Em N +is an integer from 1 +.Pq fastest +to 19 +.Pq best compression ratio . +.Sy zstd +is equivalent to +.Sy zstd-3 . +.Pp +Faster speeds at the cost of the compression ratio can be requested by +setting a negative +.Sy zstd +level. This is done using +.Sy zstd-fast- Ns Em N , +where +.Em N +is an integer in [1-9,10,20,30,...,100,500,1000] which maps to a negative +.Sy zstd +level. The lower the level the faster the compression - 1000 provides +the fastest compression and lowest compression ratio. +.Sy zstd-fast +is equivalent to +.Sy zstd-fast-1 . +.Pp +The .Sy zle compression algorithm compresses runs of zeros. .Pp |