How do I pvcreate and vgcreate the primary 480G SSD in CentOS 7 x64?This is the command I would like to run in SSH: vgcreate new_vol_group /dev/sda2But I get this error: Can't open /dev/sda2 exclusively.  Mounted filesystem?I'm trying to add and create LVM based storage to Virtualizor and am not having much luck. A moment ago, I successfully vgcreate vg1 /dev/sdb1 /dev/sdc1 but now have problems trying to create vg for the primary SSD drive.Virtualizor support said:Your /dev/sda2 partition is mounted on '/' so its not posssible to use it for panel as storage.To add a storage, please create a empty volume group and provide a name of volume group while adding a storage and enable primary storage option then it will be default storage for your panel  Note - please dont create lv just empty volume group.I thought these might be helpful:[root@localhost ~]# lsblkNAME                                    MAJ:MIN RM   SIZE RO TYPE MOUNTPOINTsda                                       8:0    0 447.1G  0 disksda1                                    8:1    0   512M  0 part /bootsda2                                    8:2    0   439G  0 part /sda3                                    8:3    0   7.6G  0 part [SWAP]sdb                                       8:16   0 931.5G  0 disksdb1                                    8:17   0 931.5G  0 part  vg1-vsv1001--0pfq--bd2p7e5b9p0jendi 253:0    0     5G  0 lvmsdc                                       8:32   0 931.5G  0 disksdc1                                    8:33   0 931.5G  0 part[root@localhost ~]# df -hFilesystem      Size  Used Avail Use% Mounted on/dev/sda2       432G  6.1G  405G   2% /devtmpfs         16G     0   16G   0% /devtmpfs            16G     0   16G   0% /dev/shmtmpfs            16G   25M   16G   1% /runtmpfs            16G     0   16G   0% /sys/fs/cgroup/dev/sda1       488M  167M  286M  37% /boottmpfs           3.2G     0  3.2G   0% /run/user/0
create LVM VG for /dev/sda2 root
centos;partition;virtual machine;lvm;fdisk