To list disks
[root@ol7-121-server1 ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 22G 0 disk
├─sda1 8:1 0 1G 0 part /boot
└─sda2 8:2 0 21G 0 part
├─ol-root 249:0 0 18.8G 0 lvm /
└─ol-swap 249:1 0 5.2G 0 lvm [SWAP]
sdb 8:16 0 3G 0 disk
└─sdb1 8:17 0 3G 0 part
└─ol-swap 249:1 0 5.2G 0 lvm [SWAP]
sdc 8:32 0 1G 0 disk
└─sdc1 8:33 0 1023M 0 part
sdd 8:48 0 1G 0 disk
└─sdd1 8:49 0 1023M 0 part
sde 8:64 0 1G 0 disk
└─sde1 8:65 0 1023M 0 part
sdf 8:80 0 18G 0 disk
sr0 11:0 1 1024M 0 rom
[root@ol7-121-server1 ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 22G 0 disk
├─sda1 8:1 0 1G 0 part /boot
└─sda2 8:2 0 21G 0 part
├─ol-root 249:0 0 18.8G 0 lvm /
└─ol-swap 249:1 0 5.2G 0 lvm [SWAP]
sdb 8:16 0 3G 0 disk
└─sdb1 8:17 0 3G 0 part
└─ol-swap 249:1 0 5.2G 0 lvm [SWAP]
sdc 8:32 0 1G 0 disk
└─sdc1 8:33 0 1023M 0 part
sdd 8:48 0 1G 0 disk
└─sdd1 8:49 0 1023M 0 part
sde 8:64 0 1G 0 disk
└─sde1 8:65 0 1023M 0 part
sdf 8:80 0 18G 0 disk
sr0 11:0 1 1024M 0 rom
To create a physical volume
[root@ol7-121-server1 /]# pvcreate -v /dev/sdf1
Wiping internal VG cache
Wiping cache of LVM-capable devices
Wiping signatures on new PV /dev/sdf1.
Found existing signature on /dev/sdf1 at offset 1080: LABEL="u01" UUID="37242b1c-9420-411a-8d88-46f7c7e02022" TYPE="ext4" USAGE="filesystem"
WARNING: ext4 signature detected on /dev/sdf1 at offset 1080. Wipe it? [y/n]: y
Accepted input: [y]
Wiping ext4 signature on /dev/sdf1.
Set up physical volume for "/dev/sdf1" with 37746688 available sectors.
Zeroing start of device /dev/sdf1.
Writing physical volume data to disk "/dev/sdf1".
Physical volume "/dev/sdf1" successfully created.
To create rdbms volume group
root@ol7-121-server1 /]# vgcreate -v rdbms /dev/sdf1
Wiping internal VG cache
Wiping cache of LVM-capable devices
Wiping signatures on new PV /dev/sdf1.
Adding physical volume '/dev/sdf1' to volume group 'rdbms'
Archiving volume group "rdbms" metadata (seqno 0).
Creating volume group backup "/etc/lvm/backup/rdbms" (seqno 1).
Volume group "rdbms" successfully created
To check physical Volume
[root@ol7-121-server1 /]# pvs
PV VG Fmt Attr PSize PFree
/dev/sda2 ol lvm2 a-- <21.00g 0
/dev/sdb1 ol lvm2 a-- <3.00g 0
/dev/sdf1 rdbms lvm2 a-- <18.00g <18.00g
to check "rdbms" volume group
[root@ol7-121-server1 /]# vgs
VG #PV #LV #SN Attr VSize VFree
ol 2 2 0 wz--n- 23.99g 0
rdbms 1 0 0 wz--n- <18.00g <18.00g
[root@ol7-121-server1 /]#
To create "lvrdbms" Logical Volume
[root@ol7-121-server1 /]# lvcreate -v --size 17g --name lvrdbms rdbms
Archiving volume group "rdbms" metadata (seqno 1).
Creating logical volume lvrdbms
Creating volume group backup "/etc/lvm/backup/rdbms" (seqno 2).
Activating logical volume rdbms/lvrdbms.
activation/volume_list configuration setting not defined: Checking only host tags for rdbms/lvrdbms.
Creating rdbms-lvrdbms
Loading rdbms-lvrdbms table (249:2)
Resuming rdbms-lvrdbms (249:2)
To make ext4 file system
[root@ol7-121-server1 /]# mkfs -t ext4 -L u01 /dev/rdbms/lvrdbms
mke2fs 1.42.9 (28-Dec-2013)
Filesystem label=u01
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
1114112 inodes, 4456448 blocks
222822 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=2153775104
136 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
Allocating group tables: done
Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done
To check what kind of file system is
[root@ol7-121-server1 /]# blkid /dev/mapper/rdbms-lvrdbms
/dev/mapper/rdbms-lvrdbms: LABEL="u01" UUID="50d76f70-ab4d-4e83-b45a-4b0cf4fa1dd8" TYPE="ext4"
To mount file System Manually
[root@ol7-121-server1 /]# mount /dev/rdbms/lvrdbms /u01
To check file system
[root@ol7-121-server1 /]# df -h
Filesystem Size Used Avail Use% Mounted on
devtmpfs 2.5G 0 2.5G 0% /dev
tmpfs 2.5G 0 2.5G 0% /dev/shm
tmpfs 2.5G 8.9M 2.5G 1% /run
tmpfs 2.5G 0 2.5G 0% /sys/fs/cgroup
/dev/mapper/ol-root 19G 12G 7.7G 60% /
/dev/sda1 1014M 305M 710M 30% /boot
scripts_agap 112G 78G 35G 70% /media/sf_scripts_agap
tmpfs 510M 24K 510M 1% /run/user/54321
tmpfs 510M 0 510M 0% /run/user/0
/dev/mapper/rdbms-lvrdbms /u01 xfs defaults 0 0
To add new file system in File System Mount Table
vi /etc/fstab
add the following row
LABEL=u01 /u01 xfs defaults 1 2
or
/dev/mapper/rdbms-lvrdbms /u01 ext4 defaults 1 2
To check mount automatically
[root@ol7-121-server1 ~]# umount /u01
[root@ol7-121-server1 ~]# df -h /u01
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/ol-root 19G 12G 7.7G 60% /
[root@ol7-121-server1 ~]# mount -a
[root@ol7-121-server1 ~]# df -h /u01
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/rdbms-lvrdbms 17G 45M 16G 1% /u01
