title: lvm mysql backup
body: <p>I have been reading about mysql backup through the use of lvm
  I understand that you create a lvm partition and allocate a specific size to mysql, leaving enough space for the snapshots.</p>
  
  <p>I read that the advantage is that backups are very quick.</p>
  
  <p>Are there any pitfalls to watch out for or disadvantages?</p>
  
  <p>Thanks</p>