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 1. lsblk 2.gdisk /dev/sdf => n => enter => enter => enter => enter => w  # for whole volume   gdisk /dev/sdg => n => enter => enter => enter => enter  => w  # for whole volume 4. lsblk 5. mdadm --create /dev/md0 --level=0 --raid-devices=2 /dev/sdf1 /dev/sdg1 6. mkfs -t xfs  /dev/md0  7. lsblk # lvm 5-1. pvcreate /dev/sdf1 6-1. pvcreate /dev/sdg1 7-1. vgcreate saspool /dev/sdf1 /dev/sdg1 8-1 vgdisplay     9-1. lvcreate --size 523.88TB --name lv02 saspool 10-1. lvscan 10-2 lvdisplay /dev/saspool/lv02 11.  mkfs -t xfs  /dev/saspool/lv02 12. mount /dev/saspool/lv02 /home_sas # remeber to add /etc/fstab 13.   df -h   14 lsblk  

1.type instruction, pvscan   # find VG tag name 2. type instruction, vgdisplay   # find vg uuid for vgchange    type instruction, vgrename {UUID} {tagname}   # because have same vg name 3.vgchange -ay --select vg_uuid={UUID} 4. type instruction, lvdisplay   #find lv name you want to mount 5. mkdir /media/old_home  # create a destination 6. mount /dev/centos/home /media/old_home Referneces https://serverfault.com/questions/904179/lvm-in-my-lun-to-mount

1. lvmdisplay to get lv path 2.  lvreduce -L -8G /dev/centos /dev/centos/sharedisk 3.  lvcreate -L 8G -n lvswap centos   # centos is VG Name 4.  mkswap /dev/centos/lvswap 5.  swapon -a