NewPush » add disk http://newpush.com Server Hosting, Data Warehouse Hosting, Collaboration Mon, 30 Jan 2012 15:40:45 +0000 en hourly 1 Adding a second disk to an LVMhttp://newpush.com/2009/01/adding-a-second-disk-to-an-lvm/ http://newpush.com/2009/01/adding-a-second-disk-to-an-lvm/#comments Fri, 23 Jan 2009 21:04:34 +0000 Balazs http://www.wdream.com/archives/33 Continue reading →]]> In a world of storage on demand and virtualized environments, adding more storage on the fly has become simple even on Linux machines without expensive software like Veritas storage manager.  Here is how to proceed:
  • need to use LVM or LVM 2
  • add the new disk as an LVM capable physical volume: pvcreate /dev/sdb (or hdX)
  • add the new disk to the volume group, e.g. vgextend VolGroup00 /dev/sdb
  • extend the logical volume, e.g. lvextend -L +55G /dev/VolGroup00/LogVol00
  • unmount the volume to resize (this may require stopping services and/or boot into rescue mode)
  • check the partition: e2fsck -f /dev/VolGroup00/LogVol00
  • resizet the partition: resize2fs /dev/VolGroup00/LogVol00

If booting from rescue, before you can act on the partition, you need to enable it with:

  • vgchange -a y VolGroup00
  • lvchange -a y /dev/VolGroup00/LogVol00
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