RHCE Storage and File Systems 3

Question 1

What is the default physical extent size when creating an LVM volume group?

Accepted Answer

4 MB

Answer

The default physical extent size for LVM volume groups is 4 MB unless specified otherwise with `-s`.

Question 2

Which command mounts all file systems listed in `/etc/fstab` that are not currently mounted?

Accepted Answer

mount -a

Answer

`mount -a` reads `/etc/fstab` and mounts all file systems that have not already been mounted.

Question 3

What does the `vgdisplay` command show?

Accepted Answer

Volume group attributes and free space

Answer

`vgdisplay` shows detailed information about LVM volume groups including size, free PE, and VG UUID.

Question 4

Which `/etc/fstab` field specifies the order in which file systems are checked at boot?

Accepted Answer

6th field (fsck order)

Answer

The sixth field in `/etc/fstab` specifies the order in which `fsck` checks file systems at boot (0 = skip, 1 = root, 2 = others).

Question 5

What command removes a logical volume named `lv_data` in volume group `vg0`?

Accepted Answer

lvremove /dev/vg0/lv_data

Answer

`lvremove` removes an LVM logical volume from a volume group permanently.

RHCE - Red Hat Certified Engineer Practice Test