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zfs(8): fix dedup omission during mdoc overhaul 

The property description has been updated with new algorithms as well.

Reviewed-by: Matt Ahrens <matt@delphix.com>
Reviewed-by: Richard Elling <Richard.Elling@RichardElling.com>
Reviewed-by: loli10K <ezomori.nozomu@gmail.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Signed-off-by: DHE <git@dehacked.net>
Closes #7377
This commit is contained in:
DeHackEd 2018-04-10 20:19:01 -04:00 committed by Brian Behlendorf
parent edc1e713c2
commit dfb1ad027f
1 changed files with 30 additions and 0 deletions
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30
man/man8/zfs.8
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@ -1330,6 +1330,36 @@ and
.Sy nodev
mount options.
.It Xo
.Sy dedup Ns = Ns Sy off Ns | Ns Sy on Ns | Ns Sy verify Ns | Ns
.Sy sha256[,verify] Ns | Ns Sy sha512[,verify] Ns | Ns Sy skein[,verify] Ns | Ns
.Sy edonr,verify
.Xc
Configures deduplication for a dataset. The default value is
.Sy off .
The default deduplication checksum is
.Sy sha256
(this may change in the future). When
.Sy dedup
is enabled, the checksum defined here overrides the
.Sy checksum
property. Setting the value to
.Sy verify
has the same effect as the setting
.Sy sha256,verify.
.Pp
If set to
.Sy verify ,
ZFS will do a byte-to-byte comparsion in case of two blocks having the same
signature to make sure the block contents are identical. Specifying
.Sy verify
is mandatory for the
.Sy edonr
algorithm.
.Pp
Unless necessary, deduplication should NOT be enabled on a system. See
.Sx Deduplication
above.
.It Xo
.Sy dnodesize Ns = Ns Sy legacy Ns | Ns Sy auto Ns | Ns Sy 1k Ns | Ns
.Sy 2k Ns | Ns Sy 4k Ns | Ns Sy 8k Ns | Ns Sy 16k
.Xc