lvm2/man/lvconvert.8_end

.
.SH NOTES
.
This previous command syntax would perform two different operations:
.br
\fBlvconvert --thinpool\fP \fILV1\fP \fB--poolmetadata\fP \fILV2\fP
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If LV1 was not a thin pool, the command would convert LV1 to
a thin pool, optionally using a specified LV for metadata.
But, if LV1 was already a thin pool, the command would swap
the current metadata LV with LV2 (for repair purposes.)
.P
In the same way, this previous command syntax would perform two different
operations:
.br
\fBlvconvert --cachepool\fP \fILV1\fP \fB--poolmetadata\fP \fILV2\fP
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If LV1 was not a cache pool, the command would convert LV1 to
a cache pool, optionally using a specified LV for metadata.
But, if LV1 was already a cache pool, the command would swap
the current metadata LV with LV2 (for repair purposes.)
.
.SH EXAMPLES
.
Convert a linear LV to a two-way mirror LV.
.br
.B lvconvert --type mirror --mirrors 1 vg/lvol1
.P
Convert a linear LV to a two-way RAID1 LV.
.br
.B lvconvert --type raid1 --mirrors 1 vg/lvol1
.P
Convert a mirror LV to use an in-memory log.
.br
.B lvconvert --mirrorlog core vg/lvol1
.P
Convert a mirror LV to use a disk log.
.br
.B lvconvert --mirrorlog disk vg/lvol1
.P
Convert a mirror or raid1 LV to a linear LV.
.br
.B lvconvert --type linear vg/lvol1
.P
Convert a mirror LV to a raid1 LV with the same number of images.
.br
.B lvconvert --type raid1 vg/lvol1
.P
Convert a linear LV to a two-way mirror LV, allocating new extents from specific
PV ranges.
.br
.B lvconvert --mirrors 1 vg/lvol1 /dev/sda:0-15 /dev/sdb:0-15
.P
Convert a mirror LV to a linear LV, freeing physical extents from a specific PV.
.br
.B lvconvert --type linear vg/lvol1 /dev/sda
.P
Split one image from a mirror or raid1 LV, making it a new LV.
.br
.B lvconvert --splitmirrors 1 --name lv_split vg/lvol1
.P
Split one image from a raid1 LV, and track changes made to the raid1 LV
while the split image remains detached.
.br
.B lvconvert --splitmirrors 1 --trackchanges vg/lvol1
.P
Merge an image (that was previously created with --splitmirrors and
--trackchanges) back into the original raid1 LV.
.br
.B lvconvert --mergemirrors vg/lvol1_rimage_1
.P
Replace PV /dev/sdb1 with PV /dev/sdf1 in a raid1/4/5/6/10 LV.
.br
.B lvconvert --replace /dev/sdb1 vg/lvol1 /dev/sdf1
.P
Replace 3 PVs /dev/sd[b-d]1 with PVs /dev/sd[f-h]1 in a raid1 LV.
.br
.B lvconvert --replace /dev/sdb1 --replace /dev/sdc1 --replace /dev/sdd1
.RS
.B vg/lvol1 /dev/sd[fgh]1
.RE
.P
Replace the maximum of 2 PVs /dev/sd[bc]1 with PVs /dev/sd[gh]1 in a raid6 LV.
.br
.B lvconvert --replace /dev/sdb1 --replace /dev/sdc1 vg/lvol1 /dev/sd[gh]1
.P
Convert an LV into a thin LV in the specified thin pool.  The existing LV
is used as an external read-only origin for the new thin LV.
.br
.B lvconvert --type thin --thinpool vg/tpool1 vg/lvol1
.P
Convert an LV into a thin LV in the specified thin pool.  The existing LV
is used as an external read-only origin for the new thin LV, and is
renamed "external".
.br
.B lvconvert --type thin --thinpool vg/tpool1
.RS
.B --originname external vg/lvol1
.RE
.P
Convert an LV to a cache pool LV using another specified LV for cache pool
metadata.
.br
.B lvconvert --type cache-pool --poolmetadata vg/poolmeta1 vg/lvol1
.P
Convert an LV to a cache LV using the specified cache pool and chunk size.
.br
.B lvconvert --type cache --cachepool vg/cpool1 -c 128 vg/lvol1
.P
Detach and keep the cache pool from a cache LV.
.br
.B lvconvert --splitcache vg/lvol1
.P
Detach and remove the cache pool from a cache LV.
.br
.B lvconvert --uncache vg/lvol1