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man: enhance lvconvert
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@ -89,7 +89,7 @@ avoid the direct use of hidden LVs.
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VG/StripedLV
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.br
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\[bu]
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Merge StripedLV into an LV when it is a previously split mirror.
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Merge StripedLV into an LV when it is a previously split mirror
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.br
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\[bu]
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See --splitmirror.
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@ -167,14 +167,14 @@ Number
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VG/RaidLV
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.br
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\[bu]
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Change the number of images in RaidLV.
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Change the number of images in a raid1 RaidLV.
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.B lvconvert \-\-splitmirrors
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Number
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VG/RaidLV
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.br
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\[bu]
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Split images from RaidLV and use them to create a new LV.
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Split images from raid1 RaidLV and use them to create a new LV.
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.br
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\[bu]
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Also specify \-\-name for new LV, or use \-\-trackchanges.
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@ -197,10 +197,13 @@ Replace failed PVs in RaidLV.
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.B lvconvert \-\-replace
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PV
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.B [\-\-replace
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PV
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.B ...]
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VG/RaidLV
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.br
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\[bu]
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Replace a specific PV in a raid* LV with another PV.
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Replace specific PV(s) in a raid* LV with another PV.
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.br
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\[bu]
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The replacement PV can be optionally specified, see below.
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@ -708,7 +711,15 @@ still available in "<pool>_meta<n>" LV.
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.br
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Remove the specified device (\fIPhysicalVolume\fP) and replace it with one
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that is available in the VG, or from a specific list of PVs specified on
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the command line following the LV name.
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the command line following the LV name. This option may be repeated multiple
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times depending on the RaidLV type. Maxima for raid1 are N-1 mirrors,
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for raid4/5 1 stripe, for raid6 2 stripes and for raid10 it is the number
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of stripes, i.e. one mirror in each mirror group. It is recommended to keep
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resilience whilst replacing PVs whenever possible, i.e. only replace a maximum
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of N-2 mirrors in a raid1 LV and 1 stripe in a raid6 LV at a time;
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this is not possible with raid4/5/10 LVs, because any single replaced PV
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will render the RaidLV non-resilient against another PV failure during replacement.
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.br
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(This option only applies to \fBraid*\fP LV types.)
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.
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.HP
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@ -863,7 +874,6 @@ Convert a mirror LV to a raid1 LV with the same number of images:
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./" Split and merge a COW snapshot:
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./" TODO
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Convert a linear LV to a two-way mirror LV, allocating new extents from specific
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PV ranges:
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.br
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@ -888,10 +898,21 @@ Merge an image (that was previously created with \-\-splitmirrors and
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.B lvconvert \-\-merge vg/lvol1_rimage_1
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./" FIXME: use merge-mirror
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Replace PV /dev/sdb1 with PV /dev/sdf1 in a raid1 LV:
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Replace PV /dev/sdb1 with PV /dev/sdf1 in a raid1/4/5/6/10 LV:
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.br
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.B lvconvert \-\-replace /dev/sdb1 vg/lvol1 /dev/sdf1
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Replace 3 PVs /dev/sd[b-d]1 with PVs /dev/sd[f-h]1 in a raid1 LV:
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.br
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.B lvconvert \-\-replace /dev/sdb1 \-\-replace /dev/sdc1 \-\-replace /dev/sdd1
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.RS
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.B vg/lvol1 /dev/sd[fgh]1
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.RE
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Replace the maximum of 2 PVs /dev/sd[bc]1 with PVs /dev/sd[gh]1 in a raid6 LV:
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.br
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.B lvconvert \-\-replace /dev/sdb1 \-\-replace /dev/sdc1 vg/lvol1 /dev/sd[gh]1
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Convert an LV into a thin LV in the specified thin pool. The existing LV
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is used as an external read\-only origin for the new thin LV.
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.br
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