LVM notes

Commands

ls /sbin/vg* /sbin/lv*/sbin/pv*
Xscan, Xdisplay, Xcreate, Xremove, Xextend

Initialize for lvm

• pvcreate -v /dev/md3
• pvdisplay /dev/md3
  

Scan & build /etc/lvmtab stuff

• vgscan
• create the volume group /dev/vg from /dev/md3
• vgcreate vg /dev/md3
• vgdisplay
• show Allocated and Free space
• sudo vgdisplay | egrep '^[AF].*Size'
  

Create a partition

• lvcreate --size 2048m vg
• ls -l /dev/vg
• mke2fs -j /dev/vg/lvol
• mkdir /test
• mount -t ext3 /dev/vg/lvol /test
• lvdisplay /dev/vg/lvol[n]
  

expand it!

• umount /dev/vg/lvol?
• lvextend -L + /dev/vg/lvol?
• e2fsck -f /dev/vg/lvol?
• resize2fs -p /dev/vg/lvol?
• mount it
  

remove it!

• umount /dev/vg/lvol?
• lvremove /dev/vg/lvol?
• rmdir mountpoint
• vi /etc/fstab