In the Linux system, remove LV, VG, pv__linux

View Volume group related information

[Root@localhost/]# Vgscan Reading All physical volumes.     This could take a while ... Found Volume Group "VolGroup00" using metadata type LVM2

View the PV, LV information contained in the volume group VolGroup00.

[root@localhost /]# vgdisplay -v volgroup00       Using  Volume group (s)  on command line       finding volume  group  "VolGroup00"      --- Volume group ---      VG Name                volgroup00     System ID                   Format                 lvm2     Metadata Areas         1     Metadata Sequence No  2      vg access             read/write      vg status             resizable      MAX LV                 0     Cur LV                 1     Open LV                0     Max PV                 0      Cur PV                 1     Act PV                 1     VG Size                1.01 gib     PE Size                8.00 MiB     total pe               129      alloc pe / size       100 / 800.00 mib      free  pe / size       29 /  232.00 MiB     VG UUID                Cug510-pQb6-RELO-lb1K-zjbt-3f62-jQLoQp            --- Logical volume ---     LV Path                 /dev/volgroup00/iscsi00     &Nbsp;lv name                 iscsi00     VG Name                 VolGroup00     LV UUID                 te78d6-5kjf-0hoh-4jrx-olhi-ehyr-xhmmmq      lv write access        read/write      LV Creation host, time localhost.iscsi, 2017-01-19  14:25:40 +0800     LV Status               available     # open                  0     lv size                 800.00 mib      current le             100     Segments                1     Allocation              inherit     Read ahead sectors     auto      - currently set to     256      block device           253:0            --- Physical volumes ---     PV  name               /dev/sda7           PV UUID                OWz0uw-gTR1-WylF-z6HW-cgpe-LLd9-2W8Q9g     PV Status              allocatable     to Editor/etc/ Fstab, delete the corresponding mount information tal pe / free pe    129 / 29  

unload a logical volume on a volume group LV

To uninstall all logical volume LV of the corresponding volume group VG. From the above information can be seen corresponding volume group VolGroup00 only/dev/volgroup00/iscsi00 this logical volume LV

[Root@localhost/]# umount/dev/volgroup00/iscsi00

If you are using a process to use a file that corresponds to a logical volume, you must force the Unload hook (#df-th view). Delete Logical Volume LV [Root@localhost/]# lvremove/dev/volgroup00/iscsi00 do your really want to remove active logical volume? [y/n]: Y Logical Volume "iscsi00" successfully removed [root@localhost/]#

If the deletion prompts an error, check the process that is currently using the logical volume, and then close the process or service.

Verify that the LV is deleted [Root@localhost/]# Lvdisplay | grep "dev/volgroup00/iscsi00" Deletes volume group VG [root@localhost/]# vgremove VolGroup00 Volume Group "VolGroup00" suc Cessfully removed [root@localhost/]#

If you delete a volume group VG in a secure manner, you must close it using vgchange-a n VolGroup00, and then delete it.
[Root@localhost/]# vgchange-a n VolGroup00 0 Logical Volume (s) in volume group ' VolGroup00 ' now active [root@local Host/]# vgremove VolGroup00 Volume Group "VolGroup00" successfully removed [root@localhost/]#

Verify that the volume group (VG) deletes [root@localhost /]# vgscan      Reading all  physical volumes.  this may take a while...     No  volume groups found   [root@localhost /]#    Delete Physical volume PV [ root@localhost /]# pvremove /dev/sda7