2) Make the EBS Volume Available for Use

To make the EBS volume available for use, you need to format and mount the EBS volume to YMP instance.

  1. Log in YMP server via SSH.
  2. Run sudo -i to get administrator privileges.
  3. Run the lsblk command to view the data disk that is attached to your instance and find the disk that you want to format and mount. 
    root@XXXXXXX: lsblk
NAME  MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
xvda    202:0    0    8G  0 disk 
└─xvda1 202:1    0    8G  0 part /
xvdf    202:80   0  100G  0 disk
    The output removes the /dev/ prefix from full device paths.
    In this example, /dev/xvda1 is mounted as the root device, and /dev/xvdf is attached, but has not been mounted yet.
  4. Create a single-partition data disk and execute the following commands in sequence:
    1. Run fdisk /dev/xvdf to partition the data disk.
    2. Enter n and press the Enter key to create a new partition.
    3. Enter p and press the Enter key to select the primary partition.
    4. Enter the partition number. Press the Enter key to use the default value.
    5. Enter the first available sector number. Press the Enter key to use the default value.
    6. Enter a number for the last sector. Press the Enter key to use the default value.
    7. Run wq and press the Enter key. 
    root@XXXXXXX:~# fdisk /dev/xvdf

Welcome to fdisk (util-linux 2.27.1).
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.
Created a new DOS disklabel with disk identifier 0xbde11612.

Command (m for help): n
Partition type
   p   primary (0 primary, 0 extended, 4 free)
   e   extended (container for logical partitions)
Select (default p): p
Partition number (1-4, default 1): 
First sector (2048-209715199, default 2048): 
Last sector, +sectors or +size{K,M,G,T,P} (2048-209715199, default 209715199): 
Created a new partition 1 of type 'Linux' and of size 100 GiB.

Command (m for help): wq
The partition table has been altered.
Calling ioctl() to re-read partition table.
Syncing disks.
  5. Run the fdisk -l command to view the new partition. If the following information appears, the new partition /dev/xvdf1 is created. 
    root@XXXXXXX:~# fdisk -l
Disk /dev/ram0: 64 MiB, 67108864 bytes, 131072 sectors
....
....
Device     Boot Start      End  Sectors Size Id Type
/dev/xvda1 *     2048 16777182 16775135   8G 83 Linux

Disk /dev/xvdf: 100 GiB, 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
Disklabel type: dos
Disk identifier: 0xbde11612

Device     Boot Start       End   Sectors  Size Id Type
/dev/xvdf1       2048 209715199 209713152  100G 83 Linux
  6. Run the command mkfs.ext4 /dev/xvdf1 to create a file system on the new partition.
  7. Run the command cp /etc/fstab /etc/fstab.bak to back up the data disk.
  8. Run the command blkid to find the UUID of the device. 
    root@XXXXXXX:~# blkid
/dev/xvda1: LABEL="/" UUID="ca774df7-756d-4261-a3f1-76038323e572" TYPE="xfs" PARTLABEL="Linux" PARTUUID="02dcd367-e87c-4f2e-9a72-a3cf8f299c10"
/dev/xvdf1: UUID="aebf131c-6957-451e-8d34-ec978d9581ae" TYPE="xfs"
  9. Run the command echo UUID=aebf131c-6957-451e-8d34-ec978d9581ae /mnt/autorecording ext4 defaults,nofail 0 0 >> /etc/fstab to write new partition information to /etc/fstab.
  10. View the new partition information in /etc/fstab: Run the command cat /etc/fstab. 
    root@XXXXXXX:~# cat /etc/fstab
LABEL=cloudimg-rootfs	/	 ext4	defaults,discard	0 0
UUID=aebf131c-6957-451e-8d34-ec978d9581ae /mnt/autorecording ext4 defaults 0 0
  11. Create a folder autorecording under /mnt: Run the command mkdir -p /mnt/autorecording.
  12. Mount the file system: Run the command mount UUID=aebf131c-6957-451e-8d34-ec978d9581ae /mnt/autorecording.
  13. To view disk space and usage: Run the command df -h.

    If the new file system information appears in the returned results, the mount operation is successful and you can use the new file system.

    root@XXXXXXX:~# df -h
root@ip-10-0-1-53:~# df -h
Filesystem      Size  Used Avail Use% Mounted on
udev            488M     0  488M   0% /dev
tmpfs           100M  3.3M   96M   4% /run
/dev/xvda1      7.7G  960M  6.8G  13% /
tmpfs           496M     0  496M   0% /dev/shm
tmpfs           5.0M     0  5.0M   0% /run/lock
tmpfs           496M     0  496M   0% /sys/fs/cgroup
/dev/loop0       88M   88M     0 100% /snap/core/5328
/dev/loop1       13M   13M     0 100% /snap/amazon-ssm-agent/495
tmpfs           100M     0  100M   0% /run/user/1000
tmpfs           100M     0  100M   0% /run/user/1001
/dev/xvdf1       99G   60M   94G   1% /mnt/autorecording