Linux LVM creation and expansion and reduction

LVM logical Volumes

2. LVM Logical Volume mechanism

   An LVM logical Volume (Logical volumes manager) is a logical division of multiple partitions or physical hard disks from which different logical partitions are divided, and logical partitions can be scaled up and down as needed

   The entire creation of the logical partitioning process was created in turn PV, VG, LV;

   PV is a partition or physical hard disk, and PE as the basic unit composition;

   VG a whole of one or more PV components

   LV is the partition from the VG volume group, which can be formatted to set up a file system;

3. LVM Creation and Management

   Because Linux supports LVM mechanism, it is inseparable from the creation and management of LVM, LVM management tools include PV, VG, LV, scan, create, delete, expand, display, reduce, and PE size settings;

   <TD style= "pad

   function	PV	vg	lv
   Span style= "font-family: ' The song Body '; Font-size:10pt;background-color: #FFFFFF;" > scan	pvscan	vgscan	lvscan
   Span style= "font-family: ' The song Body '; Font-size:10pt;background-color: #FFFFFF;" > create	pvcreate	vgcreate	lvcreate
   Span style= "font-family: ' The song Body '; Font-size:10pt;background-color: #FFFFFF;" > display	pvdisplay	vgdisplay	lvdisplay
   Span style= "font-family: ' The song Body '; Font-size:10pt;background-color: #FFFFFF;" > delete	pvremove	vgremove	lvremove
   Span style= "font-family: ' The song Body '; Font-size:10pt;background-color: #FFFFFF;" > extended	--	vgextend	lvextend
   Reduce	--	Vgreduce

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Linux LVM creation and expansion and reduction