Linux two disk mount pointing to a folder LVM Disk Management (III)

Note: The operation of any disk may damage the data inside, please back up the data in advance, remember! Remember! Remember!

0X00:LVM Common Command control.

some basic operations for the LVM underlying PV  

For the underlying PV, the commands for the operation are shown in the following table:

Command	explain
Pvchange	Controls whether the specified PV can assign new space permissions
Pvck	Check the consistency of the LVM metadata for PV
Pvcreate	Convert the specified disk or partition to PV
Pvdisplay	View the current PV situation of the system in detail
Pvmove	Move a PV data inside the same VG volume group into another PV
Pvremove	Remove PV tags, i.e. remove PV
PVs	Briefly view the current PV situation of the system
Pvresize	When the PV corresponding device partition (such as MD soft RAID) is expanded, the command can be used to enlarge the PV
Pvscan	Scan all device files with PV tags

some basic operations for LVM mid-level VG
For the middle-level VG, the command for the operation is shown in the following table

Command	Command Explanation
Vgcfgbackup	Backup VG Profile (default/etc/lvm/backup, also freely specified)
Vgcfgrestore	The VG metadata is recovered from the backed up VG description file
Vgck	Check VG
Vgchange	Modify the properties of a particular VG, including whether it is active, uuid number, ...
Vgconvert	Modify the VG metadata format, for example, change from LVM1 to LVM2
Vgcreate	Create a VG Volume group
VGs	Briefly view the system VG Volume group situation
Vgdisplay	View the usage of the System VG Volume group in detail
Vgexport	Change a specific VG to an unknown state for migrating volume groups to other systems
Vgimport	Change a specific VG volume group in an unknown state to a normal state for migrating volume groups to other systems
Vgextend	Adding PV to a specific VG
Vgimportclone	Used to import duplicate volume groups (for example, a snapshot of a volume group) and modify their UUID
Vgmerge	Merging multiple volume groups under specific conditions
Vgmknodes	Re-create Volume group device directory and Logical volume special files
Vgreduce	Remove unused PV from a specific VG
Vgremove	Remove a specific VG
Vgrename	Renames the name of the specified VG
Vgsplit	Moves the specified PV from one VG to another
Vgscan	The VG of the scanning system

some basic operations for the upper LV of LVM 
for the upper LV, the Operations command is shown in the following table:

Command	Command Explanation
Lvchange	Modifies some properties of the specified LV, including whether it is active, read-only ...
Lvconvert	Converts the properties of a specified LV, from linear to mirror or snapshot
Lvcreate	Create LV
Lvs	Briefly view the LV situation within the system
Lvdisplay	View the LV situation in detail in the system
Lvextend	Expands the capacity size of the specified LV
Lvm	A shell tool for managing LVM
Lvmconf	LVM configuration modifier
Lvmconfig	Tools for viewing LVM configuration
Lvmdiskscan	Scan all LVM2 visible devices
Lvmdump	Create a dump file of LVM for diagnosing
Lvmetad	Daemon for caching LVM meta data
Lvmpolld	The polling daemon for LVM operations commands
Lvreduce	Indent the specified LV
Lvremove	Deletes the specified LV
Lvrename	Renames the specified LV
Lvresize	Adjusts the size of the specified LV, which can be expanded or scaled
Lvscan	LV of the scanning system

Reference article:

Http://www.linuxidc.com/Linux/2017-05/143774.htm

This article is from the "Enlightened Grocery store" blog, please be sure to keep this source http://wutou.blog.51cto.com/615096/1980918

Linux two disk mount pointing to a folder LVM Disk Management (III)