Red Hat System Administration I

Instructions

1. Log in to the servera machine as the student user and switch to the root user.

   [student@workstation ~]$ ssh student@servera
   ...output omitted...
   [student@servera ~]$ sudo -i
   [sudo] password for student: student
   [root@servera ~]#

2. A new partition with a file system is added to the /dev/vdb disk on the servera machine. Mount the newly available partition by using the UUID at the /mnt/part1 mount point.

   1. Create the /mnt/part1 directory.

      [root@servera ~]# mkdir /mnt/part1

   2. Query the UUID of the /dev/vdb1 device.

      [root@servera ~]# lsblk -fp /dev/vdb
      NAME        FSTYPE LABEL UUID                                 MOUNTPOINT
      /dev/vdb
      └─/dev/vdb1 xfs          a04c511a-b805-4ec2-981f-42d190fc9a65

   3. Mount the file system by using the UUID on the /mnt/part1 directory. Use the /dev/vdb1 UUID from the previous command output.

      [root@servera ~]# mount \
      UUID="a04c511a-b805-4ec2-981f-42d190fc9a65" /mnt/part1

   4. Verify that the /dev/vdb1 device is mounted on the /mnt/part1 directory.

      [root@servera ~]# lsblk -fp /dev/vdb
      NAME        FSTYPE LABEL UUID                                 MOUNTPOINT
      /dev/vdb
      └─/dev/vdb1 xfs          a04c511a-b805-4ec2-981f-42d190fc9a65 /mnt/part1

3. Change to the /mnt/part1 directory and create the testdir subdirectory. Create the /mnt/part1/testdir/newmount file.

   1. Change to the /mnt/part1 directory.

      [root@servera ~]# cd /mnt/part1

   2. Create the /mnt/part1/testdir directory.

      [root@servera part1]# mkdir testdir

   3. Create the /mnt/part1/testdir/newmount file.

      [root@servera part1]# touch testdir/newmount

4. Unmount the file system that is mounted on the /mnt/part1 directory.

   1. Unmount the /mnt/part1 directory when the shell is in the /mnt/part1 directory. The umount command fails to unmount the device.

      [root@servera part1]# umount /mnt/part1
      umount: /mnt/part1: target is busy.

   2. Change the current directory on the shell to the /root directory.

      [root@servera part1]# cd
      [root@servera ~]#

   3. Unmount the /mnt/part1 directory.

      [root@servera ~]# umount /mnt/part1

5. Return to the workstation machine as the student user.

   [root@servera ~]# exit
   logout
   [student@servera ~]$ exit
   logout
   Connection to servera closed.
   [student@workstation]$