Add block volume to OCI instance and mount as /u01

First step add block volume through console with appropriate size as dev full path. 
Example in this case -  /dev/oracleoci/oraclevdb
















## Add volume as /dev/oracleoci/oraclevdb

[opc@oci-instance dev]$ cd oracleoci
[opc@oci-instance oracleoci]$ ls -lrt

total 0
lrwxrwxrwx. 1 root root 6 Jun  4 19:30 oraclevda -> ../sda
lrwxrwxrwx. 1 root root 7 Jun  4 19:30 oraclevda3 -> ../sda3
lrwxrwxrwx. 1 root root 7 Jun  4 19:30 oraclevda2 -> ../sda2
lrwxrwxrwx. 1 root root 7 Jun  4 19:30 oraclevda1 -> ../sda1


#### Run ICSCI command ####

[opc@oci-instance oracleoci]
sudo iscsiadm -m node -o new -T iqn.2015-12.com.oracleiaas:2c5b982e-acac-4c0c-a25a-5419ec4195ca -p 169.254.2.2:3260
sudo iscsiadm -m node -o update -T iqn.2015-12.com.oracleiaas:2c5b982e-acac-4c0c-a25a-5419ec4195ca -n node.startup -v automatic
sudo iscsiadm -m node -T iqn.2015-12.com.oracleiaas:2c5b982e-acac-4c0c-a25a-5419ec4195ca -p 169.254.2.2:3260 -l



[opc@oci-instance oracleoci]$
[opc@oci-instance oracleoci]$ ls -lrt
total 0
lrwxrwxrwx. 1 root root 6 Jun  4 19:30 oraclevda -> ../sda
lrwxrwxrwx. 1 root root 7 Jun  4 19:30 oraclevda3 -> ../sda3
lrwxrwxrwx. 1 root root 7 Jun  4 19:30 oraclevda2 -> ../sda2
lrwxrwxrwx. 1 root root 7 Jun  4 19:30 oraclevda1 -> ../sda1
lrwxrwxrwx. 1 root root 6 Jun 18 16:31 oraclevdb -> ../sdb

#### Add entry in /etc/fstab to lost volume during reboot

[opc@oci-instance oracleoci]$ cat /etc/fstab
## More information:
## https://docs.us-phoenix-1.oraclecloud.com/Content/Block/Tasks/connectingtoavolume.htm
/dev/oracleoci/oraclevdb /u01 ext4 defaults,_netdev,nofail 0 0

### Make ext4 filesystem

[opc@oci-instance dev]$ sudo mkfs -t ext4 /dev/sdb
mke2fs 1.42.9 (28-Dec-2013)
/dev/sdb is entire device, not just one partition!
Proceed anyway? (y,n) y
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=256 blocks
49152000 inodes, 196608000 blocks
9830400 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=2344615936
6000 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

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

[opc@oci-instance dev]$


###### mount /u01 

[opc@oci-instance dev]$ sudo mkdir /u01
[opc@oci-instance dev]$ sudo mount /dev/sdb /u01
[opc@oci-instance dev]$
[opc@oci-instance dev]$ df -h
Filesystem      Size  Used Avail Use% Mounted on
devtmpfs        158G     0  158G   0% /dev
tmpfs           158G     0  158G   0% /dev/shm
tmpfs           158G   49M  158G   1% /run
tmpfs           158G     0  158G   0% /sys/fs/cgroup
/dev/sda3        39G  2.9G   36G   8% /
/dev/sda1       200M  9.7M  191M   5% /boot/efi
tmpfs            32G     0   32G   0% /run/user/995
tmpfs            32G     0   32G   0% /run/user/1000
/dev/sdb        739G   73M  701G   1% /u01