LVM INTERVIEW
QUESTIONS AND ANSWERS
PAGE - 2
11..What
is Mirroring in linux?
A mirror is a complete copy of a logical
volume that's updated in real time. When you create the mirror logical volume,
LVM synchronizes the original logical volume to the mirror copy
12..What
is physical extend?
The physical extent in LVM is the block size that physical
volumes are using. The default physical extent is 4MB but can range
from 8kB up to 16GB . Logical
volumes are made up from logical
extents having the same size as the physical extents.
13..What is logical extend?
Each physical
volume is divided chunks of data, known as physical extents, these extents have
the same size as the logical extents for the volume group.
14..What is the difference between RAID and LVM?
LVM doesn’t
provides redundancy but RAID provides redundancy
15..Explain
volume group ?
The Volume Group
is the highest level abstraction used within the LVM. It gathers together a
collection of Logical Volumes and Physical Volumes into one administrative unit
16..What is the maximum size of a single logical volume (LV)?
B..For 64-bit CPUs on 2.6 kernels, the maximum LV size is 8EB
17..How to see the logical volume and its sizes?
# lvs
18..How to remove the LVM?
# umount /dev/vg_name/lv_name
# lvremove /dev/vg_name/lv_name
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