* Description: Knowledge of mounting disk with file system on Linux platform
* Compatiablity: RDBMS 11g, 12c
* Date: 05:45 PM EST, 06/01/2017

Step 1 - First find the disk:
     |__ $ dmesg | grep SCSI
             SCSI subsystem initialized
             Block layer SCSI generic (bsg) driver version 0.4 loaded (major 252)
             sd 1:0:1:0: [sdb] Attached SCSI disk
             sd 0:0:0:0: [sda] Attached SCSI disk
             sd 3:0:0:0: [sdc] Attached SCSI disk


Step 2 - Partition the disk, make it a primary disk on partition 1, and create the partition:
     |__ o. In some of Linux flavor, the disk name might be /dev/xvda or /dev/xvd* instead of sda.
     |__ $ sudo fdisk /dev/sdc
             Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
             Building a new DOS disklabel with disk identifier 0x1a79c16f.
             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)
             The device presents a logical sector size that is smaller than
             the physical sector size. Aligning to a physical sector (or optimal
             I/O) size boundary is recommended, or performance may be impacted.
             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)
            Select (default p): p
            Partition number (1-4): 1
            First cylinder (1-1305, default 1): Enter
            Using default value 1
            Last cylinder, +cylinders or +size{K,M,G} (1-1305, default 1305): Enter
            Using default value 1305
            Partition 1 of type Linux and of size 50 GiB is set

            Command (m for help): p

            Disk /dev/sdc: 10.7 GB, 10737418240 bytes
            255 heads, 63 sectors/track, 1305 cylinders
            Units = cylinders of 16065 * 512 = 8225280 bytes
            Sector size (logical/physical): 512 bytes / 4096 bytes
            I/O size (minimum/optimal): 4096 bytes / 4096 bytes
            Disk identifier: 0x1a79c16f
               Device Boot      Start         End      Blocks   Id  System
            /dev/sdc1               1        1305    10482381   83  Linux
            Partition 1 does not start on physical sector boundary.
            Command (m for help): w
            The partition table has been altered!
            Calling ioctl() to re-read partition table.
            Syncing disks.

Step 3 - write a file system to the partition, specifying your filesystem type and the device name:
     |__ $ sudo mkfs -t ext4 /dev/sdc1
             [sudo] password for micore:
             mke2fs 1.43-WIP (20-Jun-2013)
             /dev/sdc1 alignment is offset by 512 bytes.
             This may result in very poor performance, (re)-partitioning suggested.
             Discarding device blocks: done
             Filesystem label=
             OS type: Linux
             Block size=4096 (log=2)
             Fragment size=4096 (log=2)
             Stride=0 blocks, Stripe width=0 blocks
             655360 inodes, 2620595 blocks
             131029 blocks (5.00%) reserved for the super user
             First data block=0
             Maximum filesystem blocks=2684354560
             80 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
             Allocating group tables: done
             Writing inode tables: done
             Creating journal (32768 blocks): done
             Writing superblocks and filesystem accounting information: done

Step 4 - create a directory to mount the file system:
     |__ $ sudo mkdir /data

Step 5 - mount the directory:
     |__ $ sudo mount /dev/sdc1 /data

Step 6 - To ensure the drive is remounted automatically after a reboot it must be added to the /etc/fstab file.
     |   UUID (Universally Unique IDentifier) is used in /etc/fstab to refer to the drive rather than just the device name.
     |	 If the OS detects a disk error during boot, using the UUID avoids the incorrect disk being mounted to a given location. 
     |	 Remaining data disks would then be assigned those same device IDs. To find the UUID of the new drive:
     |__ $ sudo -i blkid
             /dev/sda1: UUID="d1f02642-b6db-4238-b961-9ae23d28d6aa" TYPE="ext4"
             /dev/sda2: UUID="b27ff591-4fd9-4b83-a110-8bddf652c0ac" TYPE="ext4"
             /dev/sdb1: UUID="44969a92-1000-4447-9899-e4b064e55137" TYPE="ext4"
             /dev/sdc1: UUID="c6c30b15-f73b-4a22-bc35-0d01985be76f" TYPE="ext4"

Step 7 - Recommend backing up the file system table in advanced:
     |__ $ sudo cp /etc/fstab /etc/fstab.bkp

Step 8 - Add the following line to the end of the /etc/fstab file:
     |__ $ sudo vi /etc/fstab

             >> UUID=c6c30b15-f73b-4a22-bc35-0d01985be76f   /data   ext4   defaults,nofail   1   2

     |__ https://docs.microsoft.com/en-us/azure/virtual-machines/linux/add-disk?toc=%2fazure%2fvirtual-machines%2flinux%2ftoc.json


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