How to create new XFS datastore

 

First delete all old partisions

Use fdisk -z /dev/sdb if that is the new disk.
You han also use sgdisk -z /dev/sdb

pvcreate /dev/sdb

WARNING: dos signature detected on /dev/sdb at offset 510. Wipe it? [y/n]: y

Wiping dos signature on /dev/sdb.

Physical volume "/dev/sdb" successfully created.

 vgcreate backup_vg /dev/sdb

 Volume group "backup_vg" successfully created

lvcreate -n backup_vol -l 100%FREE backup_vg

Logical volume "backup_vol" created.

mkfs.xfs -b size=4096 -m reflink=1,crc=1 /dev/backup_vg/backup_vol

meta-data=/dev/backup_vg/backup_vol isize=512    agcount=32, agsize=234414016 blks

               =    sectsz=4096  attr=2, projid32bit=1

               =    crc=1 finobt=1, sparse=1, rmapbt=0

               =    reflink=1

data        =    bsize=4096   blocks=7501248512, imaxpct=5

               =    sunit=64     swidth=512 blks

naming   =    version 2 bsize=4096   ascii-ci=0, ftype=1

log          =    internal log           bsize=4096   blocks=521728, version=2

               =    sectsz=4096  sunit=1 blks, lazy-count=1

realtime  =    none extsz=4096   blocks=0, rtextents=0

mkdir /veeam

vim /etc/fstab

insert this line

/dev/backup_vg/backup_vol       /veeam          xfs     defaults   0 0 

 lsblk

NAME                MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT

sda                        8:0    0  447G  0 disk

├─sda1                8:1    0    1G  0 part /boot/efi

├─sda2                8:2    0    2G  0 part /boot

└─sda3                8:3    0  443G  0 part

  ├─rhel-root        253:0    0   70G  0 lvm  /

  ├─rhel-swap      253:1    0    8G  0 lvm  [SWAP]

  ├─rhel-var           253:3    0   50G  0 lvm  /var

  └─rhel-home          253:4    0  315G  0 lvm  /home

sdb                      8:16   0   28T  0 disk

└─backup_vg-backup_vol 253:2    0   28T  0 lvm  /veeam