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9a50df291a
Clean up and correct the details around --extents and --size. lvcreate/lvresize/lvreduce/lvextend all now display the extents option in usages. The Size and Number value variables for --size and --extents are now displayed without the [+|-] prefix for lvcreate.
20 lines
839 B
Plaintext
20 lines
839 B
Plaintext
lvreduce reduces the size of an LV. The freed logical extents are returned
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to the VG to be used by other LVs. A copy\-on\-write snapshot LV can also
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be reduced if less space is needed to hold COW blocks. Use
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\fBlvconvert\fP(8) to change the number of data images in a RAID or
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mirrored LV.
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Be careful when reducing an LV's size, because data in the reduced area is
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lost. Ensure that any file system on the LV is resized \fBbefore\fP
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running lvreduce so that the removed extents are not in use by the file
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system.
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Sizes will be rounded if necessary. For example, the LV size must be an
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exact number of extents, and the size of a striped segment must be a
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multiple of the number of stripes.
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In the usage section below, \fB--size\fP \fISize\fP can be replaced
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with \fB--extents\fP \fINumber\fP. See both descriptions
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the options section.
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