[root@oracleserver ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vg_oracleserver-lv_root
 50G 21G 26G 46% /
tmpfs 7.8G 72K 7.8G 1% /dev/shm
/dev/sda1 477M 85M 363M 19% /boot
/dev/mapper/vg_oracleserver-lv_home
 45G 52M 43G 1% /home
[root@oracleserver ~]# ls -ltr /dev/sd*
brw-rw----. 1 root disk 8, 16 Dec 12 10:57 /dev/sdb
brw-rw----. 1 root disk 8, 0 Dec 12 10:57 /dev/sda
brw-rw----. 1 root disk 8, 2 Dec 12 10:57 /dev/sda2
brw-rw----. 1 root disk 8, 1 Dec 12 10:57 /dev/sda1

[root@oracleserver ~]# fdisk /dev/sdb
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Building a new DOS disklabel with disk identifier 0xdc92a6be.
Changes will remain in memory only, until you decide to write them.
After that, of course, the previous content won't be recoverable.

Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)

WARNING: DOS-compatible mode is deprecated. It's strongly recommended to
 switch off the mode (command 'c') and change display units to
 sectors (command 'u').

Command (m for help): n
Command action
 e extended
 p primary partition (1-4)
p
Partition number (1-4):
Value out of range.
Partition number (1-4): 1
First cylinder (1-13054, default 1):
Using default value 1
Last cylinder, +cylinders or +size{K,M,G} (1-13054, default 13054):
Using default value 13054

Command (m for help): w
The partition table has been altered!

Calling ioctl() to re-read partition table.
Syncing disks.
[root@oracleserver ~]# ls -ltr /dev/sd*
brw-rw----. 1 root disk 8, 0 Dec 12 10:57 /dev/sda
brw-rw----. 1 root disk 8, 2 Dec 12 10:57 /dev/sda2
brw-rw----. 1 root disk 8, 1 Dec 12 10:57 /dev/sda1
brw-rw----. 1 root disk 8, 16 Dec 12 11:03 /dev/sdb
brw-rw----. 1 root disk 8, 17 Dec 12 11:03 /dev/sdb1
[root@oracleserver ~]#



[root@oracleserver ~]# /sbin/mkfs -t ext4 /dev/sdb1
mke2fs 1.43-WIP (20-Jun-2013)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
6553600 inodes, 26214055 blocks
1310702 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=4294967296
800 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

Allocating group tables: done
Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done

[root@oracleserver ~]# mkdir /oradata
[root@oracleserver ~]# chown oracle:dba -R /oradata/
[root@oracleserver ~]# mount /dev/sdb1 /oradata
Uprava /etc/fstab
/dev/sdb1 /oradata ext4 defaults 1 2

[root@oracleserver ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vg_oracleserver-lv_root
 50G 21G 26G 46% /
tmpfs 7.8G 72K 7.8G 1% /dev/shm
/dev/sda1 477M 85M 363M 19% /boot
/dev/mapper/vg_oracleserver-lv_home
 45G 52M 43G 1% /home
/dev/sdb1 99G 60M 94G 1% /oradata

/dev/sdb1 /oradata ext4 defaults 1 2


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