LVM(LOGICAL VOLUME MANAGER)

LVM(LOGICAL VOLUME MANAGER)
LVM(LOGICAL VOLUME MANAGER)
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1>first create partion

#partprobe -s

#pvcreate /dev/sda?

#vgcreate vg0 /dev/sda? /dev/sda?

#vgdisplay

#pvdisplay

#lvdisplay

#lvcreate -n lvm0 -L 150M vg0 (where -n—->name, -L—>length)

#lvdisplay

#mkfs.ext3 /dev/vg0/lvm0

#mkdir /mnt/lvm1

#mount /dev/vg0/lvm0 /mnt/lvm0

#vim /etc/fstab
/dev/vg0/lvm0 /mnt/lvm0 ext3 defaults 0 0

#mount -a

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Steps To Extend The LVM
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#lvextend -L 300M /dev/vg0/lvm0
(OR)
#lvextend -L +150M /dev/vg0/lvm0

#lvdisplay

#df -h

#resize2fs /dev/vg0/lvm0 (To give the information abt changing the size to the system)

#df -h
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Steps To Reduce The Size Of LVM
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#umount /mnt/lvm0

#e2fsck -f /dev/vg0/lvm0 (forcefully check the file system type)

#resize2fs /dev/vg0/lvm0 200M

#lvreduce -L 200M /dev/vg0/lvm0

#lvdisplay /dev/vg0/lvm0

#mount /dev/vg0/lvm0 /mnt/lvm0

#df -h
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To Extend Existing VG
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1> create a partion

#partprobe -s

#pvcreate /dev/sda?

#vgextend vg0 /dev/sda?

#vgdispaly