RedHat RH202 Exam With Confidence Using Practice Dumps

One Logical Volume is created named as myvol under vo volume group and is mounted. The Initial Size of that Logical Volume is 124MB. Make successfully that the size of Logical Volume 245MB without losing any data. The size of logical volume 240MB to 255MB will be acceptable.

Answer and Explanation:

1.First check the size of Logical Volume: lvdisplay /dev/vo/myvol

2.Increase the Size of Logical Volume: lvextend -L+121M /dev/vo/myvol

3.Make Available the size on online: ext2online /dev/vo/myvol

4.Verify the Size of Logical Volume: lvdisplay /dev/vo/myvol

5.Verify that the size comes in online or not: df -h

We can extend the size of logical Volume using the lvextend command. As well as to decrease the size of Logical Volume, use the lvresize command. In LVM v2 we can extend the size of Logical Volume without unmount as well as we can bring the actual size of Logical Volume on online using ext2online command.

There are three Disk Partitions /dev/hda8, /dev/hda9, /dev/hda10 having size 100MB of each partition. Create a Logical Volume named testvolume1 and testvolume2 having a size 250MB. Mount each Logical Volume on lvmtest1, lvmtest2 directory.

Answer and Explanation:

Steps of Creating LVM:

1.pvcreate /dev/hda8 /dev/hda9 /dev/hda10

pvdisplay command is used to display the information of physical volume.

2.vgceate test0 /dev/hda8 /dev/hda9 /dev/hda10

vgdisplay command is used to display the information of Volume Group.

3.lvcreate –L 250M –n testvolume1 test0

 lvdisplay command is used to display the information of Logical Volume.

4.lvcreate –L 250M –n testvolume2 test0

5.mkfs –t ext3 /dev/test0/testvolume1

6.mkfs –t ext3 /dev/test0/testvolume2

7.mkdir /lvtest1

8.mkdir /lvtest2

9.mount /dev/test0/testvolume1 /lvtest1

10.mount /dev/test0/testvolume2 /lvtest2

11.vi /etc/fstab

/dev/test0/testvolume2/lvtest2ext3defaults0 0

/dev/test0/testvolume1/lvtest1ext3defaults0 0

To create the LVM( Logical Volume Manager) we required the disks having ‘8e’ Linux LVM type. First we should create the physical Volume, then we can create the Volume group from disks belongs to physical Volume. lvcreate command is used to create the logical volume on volume group. We can specify the size of logical volume with –L option and name with -n option.

Create the partition having 100MB size and mount it on /mnt/neo

Answer and Explanation:

• Use fdisk /dev/hdaTo create new partition.
• Type nFor New partitions
• It will ask for Logical or Primary Partitions. Press l for logical.
• It will ask for the Starting Cylinder: Use the Default by pressing Enter Key.
• Type the Size: +100MYou can Specify either Last cylinder of Size here.
• Press P to verify the partitions lists and remember the partitions name.
• Press w to write on partitions table.
• Either Reboot or use partprobe command.
• Use mkfs –t ext3 /dev/hda? Where ? is your partition number
• Or
• mke2fs –j /dev/hda? To create ext3 filesystem.
• mkdir /mnt/neo
• vi /etc/fstab
• Write:
• /dev/hda?/mnt/neoext3defaults1 2
• Verify by mounting on current Sessions also:
• mount /dev/hda? /mnt/neo