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cache: man updates

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Better man for cachepolicy and cachesettings.
This commit is contained in:
Zdenek Kabelac 2015-07-20 11:55:43 +02:00
parent feb8e9a790
commit 6cde12a013
2 changed files with 31 additions and 10 deletions
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17
man/lvconvert.8.in
View File

@ -162,6 +162,10 @@ lvconvert \(em convert a logical volume from linear to mirror or snapshot
.IR ChunkSize [ bBsSkKmMgG ]]
.RB [ \-\-cachemode
.RI { writeback | writethrough }]
.RB [ \-\-cachepolicy
.IR policy ]
.RB [ \-\-cachesettings
.IR key=value ]
.RB [ \-\-poolmetadata
.IR CachePoolMetadataLogicalVolume { Name | Path }
|
@ -222,10 +226,21 @@ Converts logical volume to a cached LV with the use of cache pool
specified with \fB\-\-cachepool\fP.
For more information on cache pool LVs and cache LVs, see \fBlvmcache\fP(7).
.TP
.B \-\-cachepolicy \fIpolicy
Only applicable to cached LVs; see also \fBlvmcache(7)\fP. Sets
the cache policy. \fImq\fP is the basic policy name. \fIsqm\fP is more advanced
version available in newer kernels.
.TP
.BR \-\-cachepool " " \fICachePoolLV
This argument is necessary when converting a logical volume to a cache LV.
For more information on cache pool LVs and cache LVs, see \fBlvmcache\fP(7).
.TP
.BR \-\-cachesettings " " \fIkey=value
Only applicable to cached LVs; see also \fBlvmcache(7)\fP. Sets
the cache tunable settings. In most use-cases, default values should be adequate.
Special string value \fIdefault\fP switches setting back to its default kernel value
and removes it from the list of settings stored in lvm2 metadata.
.TP
.BR \-m ", " \-\-mirrors " " \fIMirrors
Specifies the degree of the mirror you wish to create.
For example, "\fB\-m 1\fP" would convert the original logical
@ -496,7 +511,7 @@ See \fBlvmthin\fP(7) for more info about thin provisioning support.
Uncaches \fICacheLogicalVolume\fP.
Before the volume becomes uncached, cache is flushed.
Unlike with \fB\-\-splitcache\fP the cache pool volume is removed.
This option could seen as an inverse of \fB\-\-cache\fP.
This option could be seen as an inverse of \fB\-\-cache\fP.
.SH Examples
Converts the linear logical volume "vg00/lvol1" to a two-way mirror

24
man/lvcreate.8.in
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@ -13,13 +13,13 @@ lvcreate \- create a logical volume in an existing volume group
.RI { y | n }]
.RB [ \-H | \-\-cache ]
.RB [ \-\-cachemode
.RI { writeback | writethrough }]
.RI { passthrough | writeback | writethrough }]
.RB [ \-\-cachepolicy
.IR policy ]
.RB [ \-\-cachesettings
.IR key=value ]
.RB [ \-\-cachepool
.IR CachePoolLogicalVolume { Name | Path }
.RB [ \-\-cachesettings
.IR key=value ]
.RB [ \-c | \-\-chunksize
.IR ChunkSize [ bBsSkKmMgG ]]
.RB [ \-\-commandprofile
@ -188,7 +188,7 @@ See \fBlvmcache\fP(7) for more info about caching support.
Note that the cache segment type requires a dm-cache kernel module version
1.3.0 or greater.
.TP
.IR \fB\-\-cachemode " {" writeback | writethrough }
.IR \fB\-\-cachemode " {" passthrough | writeback | writethrough }
Specifying a cache mode determines when the writes to a cache LV
are considered complete. When \fIwriteback\fP is specified, a write is
considered complete as soon as it is stored in the cache pool LV.
@ -198,10 +198,21 @@ While \fIwritethrough\fP may be slower for writes, it is more
resilient if something should happen to a device associated with the
cache pool LV.
.TP
.B \-\-cachepolicy \fIpolicy
Only applicable to cached LVs; see also \fBlvmcache(7)\fP. Sets
the cache policy. \fImq\fP is the basic policy name. \fIsqm\fP is more advanced
version available in newer kernels.
.TP
.IR \fB\-\-cachepool " " CachePoolLogicalVolume { Name | Path }
Specifies the name of cache pool volume name. The other way to specify pool name
is to append name to Volume group name argument.
.TP
.BR \-\-cachesettings " " \fIkey=value
Only applicable to cached LVs; see also \fBlvmcache(7)\fP. Sets
the cache tunable settings. In most use-cases, default values should be adequate.
Special string value \fIdefault\fP switches setting back to its default kernel value
and removes it from the list of settings stored in lvm2 metadata.
.TP
.BR \-c ", " \-\-chunksize " " \fIChunkSize [ \fIbBsSkKmMgG ]
Gives the size of chunk for snapshot, cache pool and thin pool logical volumes.
Default unit is in kilobytes.
@ -251,11 +262,6 @@ Ignore the flag to skip Logical Volumes during activation.
Use \fB\-\-setactivationskip\fP option to set or reset
activation skipping flag persistently for logical volume.
.TP
.BR \-\-cachepolicy " " policy ", " \-\-cachesettings " " key=value
Only applicable to cached LVs; see also \fBlvmcache(7)\fP. Sets
the cache policy and its associated tunable settings. In most use-cases,
default values should be adequate.
.TP
.B \-\-ignoremonitoring
Make no attempt to interact with dmeventd unless \fB\-\-monitor\fP
is specified.