How to create LVM partion in Red Hat Linux Part (1)

Hello Friends I am Deepak Saini and today we are discus on the lvm partion

 lets start

LVM :-LVM stands for Logical volume management.Lvm is a utility which is enables extending and reducing in partion size.We are using this utility in linux if our one partion is full and we want to extending memory size in this partion we are not able this without LVM partitioning.

How we are create LVM partion in the red hat linux 
 
         Logical Drive  ------->   Physical Voulme  ------->  Volume Group ------> Logical Volume  
Setups 
1 1st of all we are create the partions with the help of the fdisk command if you not know how it do then plz first read here

2 Then we are create those partions LVM based to change  their hex code with the help of fdisk command
   LVM hexacode is 8e check it in the partion tut 

3 Then we are create the physical volumes
syntax :- pvcreate <partions name >  

      We are using the pvdisplay to see the pv
Synatx:- pvdisplay
 in this pvcreate is the command and partions name is like /dev/sda5 for one partion and more then one /dev/sda{1,2,3} like that

4 Then we are going for create  volume group 
syntax:- vgcreate <vg group name> <partion name>

 we are using the vgdislay to see the vg
Syntax:- vgdisplay
in this vgcreate is a command and vg group is the name of the volume group and partion name like /dev/sda5 which one you want to create volume group

5 Now the time is come to create the logical volume 
syntax:- lvcreate  -L <size of lv> -n <Name of lv> <vg path>

we are using lvdisplay to see the lv
syntax :- lv display
in this lvcreate is the command and _l for size of our logical volume and -n for the name of the logical volume 
and name of lv is the name of logical volume and vg path is your volume group path you volume is path is like this /dev/vg0  vg0 is here your volume group name which is given by you when you are creating the volume group.

6 for checking you lv or vg create or not do it 
syntax:- ll /dev/mapper/


Now how We use that Created Logical volume
1 Format the logical volume 
 syntax:- mkfs.ext4 /dev/mapper/<your lv name >

2 Then we are mount that partion 
 syntax:- mkdir /mnt/<dir name>

1st we are create the directory in the mnt dir
syntax:- mount /dev/mapper/<vg name-lv name /mnt/<dir name>  

If we want to mount permanently we are entry in the fstab file 
syntax:- vim /etc/fstab

 

Thanks for reading and sorry for My RIP english _/\_ Jai Hind


   

 

Posted in: Red Hat