===== Replace LVM disk to upgrade capacity =====

This example will copy /dev/sde1 mounted on /backup to /dev/sdf1 mounted on /replace and afterwards change mount point, logical volume and volume group names to the source names.

==== Prepare new disk ====

  * fdisk /dev/sdf
  * **n** to create a new partition, select **1** and accept all defaults
  * **w** to write the new partition table and quit
  * mkfs.ext3 /dev/sdf1
  * lvm
  * lvm > pvcreate /dev/sdf1
  * lvm > vgcreate vg_replace /dev/sdf1
  * lvm > vgdisplay vg_replace to check ### of free extents
  * lvm > lvcreate -l### vg_replace (do not use -LxxGB, use size with -l### which is number of extents)
  * lvm > lvrename vg_replace lvol0 lv_replace
  * lvm > vgcfgbackup to backup volume group configurations
  * lvm > exit
  * mkfs -t ext3 /dev/vg_replace/lv_replace
  * mkdir /replace
  * mount /dev/vg_replace/lv_replace /replace


==== Copy content and assign new disk ====

  * rsync -avH  /backup/* /replace/
  * umount /backup
  * umount /replace
  * lvm
  * lvm > lvrename vg_backup/lv_backup lv_backup1
  * lvm > lvchange vg_backup/lv_backup1 -an
  * lvm > vgrename vg_backup vg_backup1
  * lvm > lvchange vg_backup1/lv_backup1 -ay
  * lvm > lvrename vg_replace/lv_replace lv_backup
  * lvm > lvchange vg_replace/lv_backup -an
  * lvm > vgrename vg_replace vg_backup
  * lvm > lvchange vg_backup/lv_backup -ay
  * lvm > exit
  * mount /dev/vg_backup/lv_backup /backup -o noatime,user_xattr

==== Setting up LVM on top of a Linux Software Raid ====

  * prepare the new disks with a partition (see above), do not create the filesystem yet
  * mdadm --create --verbose /dev/md5 --level=1 --raid-devices=2 /dev/sde /dev/sdf
  * watch the progress with cat /proc/mdstat
  * when finished, restart the computer (shutdown -r now)