Zimbra and LVM

The Zimbra Forum has some things to say about LVM:

• LVM snaphots hurt performance. However they are handy for minimizing downtime if you want to do a full backup of /opt/zimbra. Zimbra's built-in backups seem a better trade-off to me. While reading through this there as a kernel trap post on replacing atime with relatime.
• Someone who claims to be knowledge in storage and who posts to the forum every day on average suggested using LVM for the flexibility.
• Someone using LVM suggests that zmvolume makes LVM less necessary.
• There were plenty of posts mentioning LVM on the Forum which were answered by Zimbra employees or experienced admins where LVM was stated as something someone was using or were going to use and no one said not to use it. This included advice for partitioning new servers or I/O tuning (where the most popular thing you shouldn't do is use RAID5).

Update: LVM and multipathd conflict. I prefer Zimbra on ext3 directly on disk; no LVM.