Setup lvm

combine /dev/sdb and /dev/sdc

if there’s partition on /dev/sdb, /dev/sdc, need to clear them first using fdisk

fdisk /dev/sdb -> d (delete partition) ->w

fdisk /dev/sdc

pvcreate /dev/sdb

pvcreate /dev/sdc

vgcreate vgrp /dev/sdb /dev/sdc

vgchange -a y vg

vgdisplay vg|grep ‘Total PE

‘lvcreate -i2 -I8 -l 70006 vg -n lv

mkfs.ext3 /dev/vg/lv

tune2fs -r 128000 /dev/vg/lv

mount /dev/vg/lv /backup

Remove lvm

#lvremove /dev/vg/lv
#vgremove vg
#fdisk /dev/sdb
#mkfs.ext3 /dev/sdb1
#tune2fs -r 128000 /dev/sdb1
(do same to /dev/sdc)
#mount /dev/sdb1 /www