How to format and mount the new disk on Linux centos 7
Check the disk
[myuser@localhost ~]$ df -h
Filesystem Size Used Avail Use% Mounted on
devtmpfs 7.8G 0 7.8G 0% /dev
tmpfs 7.8G 0 7.8G 0% /dev/shm
tmpfs 7.8G 8.8M 7.8G 1% /run
tmpfs 7.8G 0 7.8G 0% /sys/fs/cgroup
/dev/mapper/centos-root 71G 1.2G 70G 2% /
/dev/sda1 1014M 149M 866M 15% /boot
/dev/mapper/centos-home 20G 33M 20G 1% /home
tmpfs 1.6G 0 1.6G 0% /run/user/1000
[myuser@localhost ~]$
[myuser@localhost ~]$ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
fd0 2:0 1 4K 0 disk
sda 8:0 0 100G 0 disk
├─sda1 8:1 0 1G 0 part /boot
└─sda2 8:2 0 98.9G 0 part
├─centos-root 253:0 0 71G 0 lvm /
├─centos-swap 253:1 0 7.9G 0 lvm [SWAP]
└─centos-home 253:2 0 20G 0 lvm /home
sdb 8:16 0 2T 0 disk
sr0 11:0 1 1024M 0 rom
[myuser@localhost ~]$
[myuser@localhost ~]$ cd /var/
[myuser@localhost var]$ ls
adm crash empty gopher lib lock mail nis preserve spool yp
cache db games kerberos local log nfsserver opt run tmp
[myuser@localhost var]$
Make nfs server directory
[myuser@localhost var]$ sudo mkdir nfsserver
[myuser@localhost var]$
[myuser@localhost var]$ ls
adm crash empty gopher lib lock mail nis preserve spool yp
cache db games kerberos local log nfsserver opt run tmp
[myuser@localhost var]$
Check the disk[myuser@localhost var]$ df -h
Filesystem Size Used Avail Use% Mounted on
devtmpfs 7.8G 0 7.8G 0% /dev
tmpfs 7.8G 0 7.8G 0% /dev/shm
tmpfs 7.8G 8.9M 7.8G 1% /run
tmpfs 7.8G 0 7.8G 0% /sys/fs/cgroup
/dev/mapper/centos-root 71G 1.2G 70G 2% /
/dev/sda1 1014M 149M 866M 15% /boot
/dev/mapper/centos-home 20G 33M 20G 1% /home
tmpfs 1.6G 0 1.6G 0% /run/user/1000
[myuser@localhost var]$
Check the disk with fdisk -l command
[myuser@localhost var]$ sudo fdisk -l
Disk /dev/sda: 107.4 GB, 107374182400 bytes, 209715200 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x000d135e
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 2099199 1048576 83 Linux
/dev/sda2 2099200 209469439 103685120 8e Linux LVM
Disk /dev/sdb: 2199.0 GB, 2199023255552 bytes, 4294967296 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/mapper/centos-root: 76.2 GB, 76235669504 bytes, 148897792 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/mapper/centos-swap: 8455 MB, 8455716864 bytes, 16515072 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/mapper/centos-home: 21.5 GB, 21474836480 bytes, 41943040 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Run fdisk command to /dev/sdb
[myuser@localhost var]$ sudo fdisk /dev/sdb
Welcome to fdisk (util-linux 2.23.2).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.
Device does not contain a recognized partition table
Building a new DOS disklabel with disk identifier 0x7867d703.
WARNING: The size of this disk is 2.2 TB (2199023255552 bytes).
DOS partition table format can not be used on drives for volumes
larger than (2199023255040 bytes) for 512-byte sectors. Use parted(1) and GUID
partition table format (GPT).
Command (m for help): p
Disk /dev/sdb: 2199.0 GB, 2199023255552 bytes, 4294967296 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x7867d703
Device Boot Start End Blocks Id System
Create new partition disk
Command (m for help): n
Partition type:
p primary (0 primary, 0 extended, 4 free)
e extended
Select (default p):
Using default response p
Partition number (1-4, default 1):
First sector (2048-4294967295, default 2048):
Using default value 2048
Last sector, +sectors or +size{K,M,G} (2048-4294967294, default 4294967294):
Using default value 4294967294
Partition 1 of type Linux and of size 2 TiB is set
Command (m for help): m
Command action
a toggle a bootable flag
b edit bsd disklabel
c toggle the dos compatibility flag
d delete a partition
g create a new empty GPT partition table
G create an IRIX (SGI) partition table
l list known partition types
m print this menu
n add a new partition
o create a new empty DOS partition table
p print the partition table
q quit without saving changes
s create a new empty Sun disklabel
t change a partition's system id
u change display/entry units
v verify the partition table
w write table to disk and exit
x extra functionality (experts only)
Command (m for help): t
Selected partition 1
Hex code (type L to list all codes): L
0 Empty 24 NEC DOS 81 Minix / old Lin bf Solaris
1 FAT12 27 Hidden NTFS Win 82 Linux swap / So c1 DRDOS/sec (FAT-
2 XENIX root 39 Plan 9 83 Linux c4 DRDOS/sec (FAT-
3 XENIX usr 3c PartitionMagic 84 OS/2 hidden C: c6 DRDOS/sec (FAT-
4 FAT16 <32M 40 Venix 80286 85 Linux extended c7 Syrinx
5 Extended 41 PPC PReP Boot 86 NTFS volume set da Non-FS data
6 FAT16 42 SFS 87 NTFS volume set db CP/M / CTOS / .
7 HPFS/NTFS/exFAT 4d QNX4.x 88 Linux plaintext de Dell Utility
8 AIX 4e QNX4.x 2nd part 8e Linux LVM df BootIt
9 AIX bootable 4f QNX4.x 3rd part 93 Amoeba e1 DOS access
a OS/2 Boot Manag 50 OnTrack DM 94 Amoeba BBT e3 DOS R/O
b W95 FAT32 51 OnTrack DM6 Aux 9f BSD/OS e4 SpeedStor
c W95 FAT32 (LBA) 52 CP/M a0 IBM Thinkpad hi eb BeOS fs
e W95 FAT16 (LBA) 53 OnTrack DM6 Aux a5 FreeBSD ee GPT
f W95 Ext'd (LBA) 54 OnTrackDM6 a6 OpenBSD ef EFI (FAT-12/16/
10 OPUS 55 EZ-Drive a7 NeXTSTEP f0 Linux/PA-RISC b
11 Hidden FAT12 56 Golden Bow a8 Darwin UFS f1 SpeedStor
12 Compaq diagnost 5c Priam Edisk a9 NetBSD f4 SpeedStor
14 Hidden FAT16 <3 61 SpeedStor ab Darwin boot f2 DOS secondary
16 Hidden FAT16 63 GNU HURD or Sys af HFS / HFS+ fb VMware VMFS
17 Hidden HPFS/NTF 64 Novell Netware b7 BSDI fs fc VMware VMKCORE
18 AST SmartSleep 65 Novell Netware b8 BSDI swap fd Linux raid auto
1b Hidden W95 FAT3 70 DiskSecure Mult bb Boot Wizard hid fe LANstep
1c Hidden W95 FAT3 75 PC/IX be Solaris boot ff BBT
1e Hidden W95 FAT1 80 Old Minix
Hex code (type L to list all codes): 8e
Changed type of partition 'Linux' to 'Linux LVM'
Command (m for help): p
Disk /dev/sdb: 2199.0 GB, 2199023255552 bytes, 4294967296 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x7867d703
Device Boot Start End Blocks Id System
/dev/sdb1 2048 4294967294 2147482623+ 8e Linux LVM
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
Check the disk
[myuser@localhost var]$
[myuser@localhost var]$ df -h
Filesystem Size Used Avail Use% Mounted on
devtmpfs 7.8G 0 7.8G 0% /dev
tmpfs 7.8G 0 7.8G 0% /dev/shm
tmpfs 7.8G 8.9M 7.8G 1% /run
tmpfs 7.8G 0 7.8G 0% /sys/fs/cgroup
/dev/mapper/centos-root 71G 1.2G 70G 2% /
/dev/sda1 1014M 149M 866M 15% /boot
/dev/mapper/centos-home 20G 33M 20G 1% /home
tmpfs 1.6G 0 1.6G 0% /run/user/1000
[myuser@localhost var]$
[myuser@localhost var]$ sudo pvs
[sudo] password for myuser:
PV VG Fmt Attr PSize PFree
/dev/sda2 centos lvm2 a-- <98.88g 4.00m
[myuser@localhost var]$ sudo lvs
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
home centos -wi-ao---- 20.00g
root centos -wi-ao---- 71.00g
swap centos -wi-ao---- <7.88g
[myuser@localhost var]$
Create physical volume and volume group
[myuser@localhost var]$ sudo pvcreate /dev/sdb1
Physical volume "/dev/sdb1" successfully created.
[myuser@localhost var]$
[myuser@localhost var]$ sudo vgcreate nfsdata /dev/sdb1
Volume group "nfsdata" successfully created
[myuser@localhost var]$
Check the physical volume, volume group and logical volume
[myuser@localhost var]$ sudo pvs
PV VG Fmt Attr PSize PFree
/dev/sda2 centos lvm2 a-- <98.88g 4.00m
/dev/sdb1 nfsdata lvm2 a-- <2.00t <2.00t
[myuser@localhost var]$ sudo vgs
VG #PV #LV #SN Attr VSize VFree
centos 1 3 0 wz--n- <98.88g 4.00m
nfsdata 1 0 0 wz--n- <2.00t <2.00t
[myuser@localhost var]$ sudo lvs
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
home centos -wi-ao---- 20.00g
root centos -wi-ao---- 71.00g
swap centos -wi-ao---- <7.88g
[myuser@localhost var]$
[myuser@localhost var]$ sudo lvcreate -n nfsdata --size 2000G nfsdata
Logical volume "nfsdata" created.
[myuser@localhost var]$
Check the disk partition
[myuser@localhost var]$ sudo fdisk -l
Disk /dev/sda: 107.4 GB, 107374182400 bytes, 209715200 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x000d135e
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 2099199 1048576 83 Linux
/dev/sda2 2099200 209469439 103685120 8e Linux LVM
Disk /dev/sdb: 2199.0 GB, 2199023255552 bytes, 4294967296 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x7867d703
Device Boot Start End Blocks Id System
/dev/sdb1 2048 4294967294 2147482623+ 8e Linux LVM
Disk /dev/mapper/centos-root: 76.2 GB, 76235669504 bytes, 148897792 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/mapper/centos-swap: 8455 MB, 8455716864 bytes, 16515072 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/mapper/centos-home: 21.5 GB, 21474836480 bytes, 41943040 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Check the disks size
[myuser@localhost var]$ df -h
Filesystem Size Used Avail Use% Mounted on
devtmpfs 7.8G 0 7.8G 0% /dev
tmpfs 7.8G 0 7.8G 0% /dev/shm
tmpfs 7.8G 8.9M 7.8G 1% /run
tmpfs 7.8G 0 7.8G 0% /sys/fs/cgroup
/dev/mapper/centos-root 71G 1.2G 70G 2% /
/dev/sda1 1014M 149M 866M 15% /boot
/dev/mapper/centos-home 20G 33M 20G 1% /home
tmpfs 1.6G 0 1.6G 0% /run/user/1000
[myuser@localhost var]$
[myuser@localhost var]$ sudo lvs
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
home centos -wi-ao---- 20.00g
root centos -wi-ao---- 71.00g
swap centos -wi-ao---- <7.88g
nfsdata nfsdata -wi-a----- 1.95t
[myuser@localhost var]$
[myuser@localhost var]$ sudo mkfs.ext4 /dev/nfsdata/nfsdata
mke2fs 1.42.9 (28-Dec-2013)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
131072000 inodes, 524288000 blocks
26214400 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=2671771648
16000 block groups
32768 blocks per group, 32768 fragments per group
8192 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968,
102400000, 214990848, 512000000
Allocating group tables: done
Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done
[myuser@localhost var]$
[myuser@localhost var]$ df -h
Filesystem Size Used Avail Use% Mounted on
devtmpfs 7.8G 0 7.8G 0% /dev
tmpfs 7.8G 0 7.8G 0% /dev/shm
tmpfs 7.8G 8.9M 7.8G 1% /run
tmpfs 7.8G 0 7.8G 0% /sys/fs/cgroup
/dev/mapper/centos-root 71G 1.2G 70G 2% /
/dev/sda1 1014M 149M 866M 15% /boot
/dev/mapper/centos-home 20G 33M 20G 1% /home
tmpfs 1.6G 0 1.6G 0% /run/user/1000
[myuser@localhost var]$
[myuser@localhost var]$ sudo mount /dev/mapper/nfsdata-nfsdata /var/nfsserver
[myuser@localhost var]$
Check the disks size
[myuser@localhost var]$ df -h
Filesystem Size Used Avail Use% Mounted on
devtmpfs 7.8G 0 7.8G 0% /dev
tmpfs 7.8G 0 7.8G 0% /dev/shm
tmpfs 7.8G 8.9M 7.8G 1% /run
tmpfs 7.8G 0 7.8G 0% /sys/fs/cgroup
/dev/mapper/centos-root 71G 1.2G 70G 2% /
/dev/sda1 1014M 149M 866M 15% /boot
/dev/mapper/centos-home 20G 33M 20G 1% /home
tmpfs 1.6G 0 1.6G 0% /run/user/1000
/dev/mapper/nfsdata-nfsdata 2.0T 81M 1.9T 1% /var/nfsserver
[myuser@localhost var]$
[myuser@localhost var]$ sudo lvs
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
home centos -wi-ao---- 20.00g
root centos -wi-ao---- 71.00g
swap centos -wi-ao---- <7.88g
nfsdata nfsdata -wi-a----- 1.95t
[myuser@localhost var]$
Rename the volume group to data (optional)
[myuser@localhost var]$ sudo vgrename nfsdata data
Volume group "nfsdata" successfully renamed to "data"
[myuser@localhost var]$
[myuser@localhost var]$ sudo lvs
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
home centos -wi-ao---- 20.00g
root centos -wi-ao---- 71.00g
swap centos -wi-ao---- <7.88g
nfsdata data -wi-a----- 1.95t
[myuser@localhost var]$
Mount the disk to /var/nfsserver mounting point
[myuser@localhost var]$ sudo mount /dev/mapper/data-nfsdata /var/nfsserver
[myuser@localhost var]$
[myuser@localhost var]$ df -h
Filesystem Size Used Avail Use% Mounted on
devtmpfs 7.8G 0 7.8G 0% /dev
tmpfs 7.8G 0 7.8G 0% /dev/shm
tmpfs 7.8G 8.9M 7.8G 1% /run
tmpfs 7.8G 0 7.8G 0% /sys/fs/cgroup
/dev/mapper/centos-root 71G 1.2G 70G 2% /
/dev/sda1 1014M 149M 866M 15% /boot
/dev/mapper/centos-home 20G 33M 20G 1% /home
tmpfs 1.6G 0 1.6G 0% /run/user/1000
/dev/mapper/data-nfsdata 2.0T 81M 1.9T 1% /var/nfsserver
[myuser@localhost var]$
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