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lvm [2012/01/31 15:50]
k2patel [Worked Example on Live System]
lvm [2017/03/23 15:56] (current)
k2patel [Add drive to LVM]
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 But it is important you do it in proper steps. But it is important you do it in proper steps.
  
 +==== Steps to create LVM from drive ====
 +<code bash>
 +pvcreate /dev/xvdf1
 +pvdisplay /dev/xvdf1
 +vgcreate -s 16M vg0 /dev/xvdf1
 +vgdisplay /dev/xvdf
 +vgdisplay vg0
 +lvcreate -n lv-vol001 vg0
 +lvcreate --help
 +lvcreate -A n -L 24.5G -n lv-vol001 vg0
 +mkfs.ext3 /​dev/​vg0/​lv-vol001
 +</​code>​
  
 +==== Add drive to LVM ====
 +<code bash>
 +# Rescan the machine if not found.
 +echo "- - -" > /​sys/​class/​scsi_host/​host0/​scan
 +# Cont.
 +fdisk /dev/xvdk ## Comment "​Specify Type 8e by option t"
 +mkfs.ext3 /​dev/​xvdk1 ​
 +pvcreate /​dev/​xvdk1 ​
 +vgextend vg0 /dev/xvdk1
 +lvextend -L 300G /​dev/​vg0/​lv-vol001
 +OR
 +lvextend -L+99.91G /​dev/​vg0/​lv-vol001
 +OR
 +lvextend -l +100%FREE /​dev/​vg0/​lv-vol001
 +resize2fs /​dev/​vg0/​lv-vol001
 +</​code>​
 ==== Reducing Size ==== ==== Reducing Size ====
  
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 e2fsck -y /​dev/​mapper/​VolGroup00-LogVol02 e2fsck -y /​dev/​mapper/​VolGroup00-LogVol02
 lvextend -L+512M /​dev/​mapper/​VolGroup00-LogVol02 lvextend -L+512M /​dev/​mapper/​VolGroup00-LogVol02
 +OR
 +lvextend -l +100%FREE /​dev/​mapper/​VolGroup00-LogVol02
 resize2fs /​dev/​mapper/​VolGroup00-LogVol02 resize2fs /​dev/​mapper/​VolGroup00-LogVol02
 mount /opt mount /opt
Line 28: Line 58:
  
 <code bash | history> <code bash | history>
 +#rescan the device
 +echo "- - -" > /​sys/​class/​scsi_device/​1\:​0\:​0\:​0/​device/​rescan
 +#list devices and confirm you are going to update which drive.
 fdisk -l fdisk -l
-fdisk /dev/sda ## Comment "Specidy ​Type 8e by option t"+### Delete and recreate the partition 'make sure start block is the same'​ 
 +fdisk /dev/sda ## Comment "Specify ​Type 8e by option t" 
 +### Reprobe partition table. 
 +partprobe -s
 mkfs.ext3 /dev/sda1 mkfs.ext3 /dev/sda1
 vgextend VolGroup00 /dev/sda1 vgextend VolGroup00 /dev/sda1
lvm.1328025046.txt.gz · Last modified: 2012/01/31 15:50 by k2patel